lots of changes - errors in f_zero calculation?
This commit is contained in:
a.ott
parent
1f82f06209
commit
2f0c19ea5a
@ -143,9 +143,9 @@ class Adaption:
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# print("current tau: {:.1f}ms".format(np.median(tau_effs) * (fi_curve_slope / f_infinity_slope) * 1000))
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# new way to calculate with the fi curve slope at the intersection point of it and the f_inf line
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factor = self.fi_curve.get_fi_curve_slope_at_f_zero_intersection() / f_infinity_slope
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factor = self.fi_curve.get_f_zero_fit_slope_at_f_inf_fit_intersection() / f_infinity_slope
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self.tau_real = np.median(tau_effs) * factor
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print("###### tau: {:.1f}ms".format(self.tau_real*1000), "other f_0 slope:", self.fi_curve.get_fi_curve_slope_at_f_zero_intersection())
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print("###### tau: {:.1f}ms".format(self.tau_real*1000), "other f_0 slope:", self.fi_curve.get_f_zero_fit_slope_at_f_inf_fit_intersection())
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def get_tau_real(self):
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return np.median(self.tau_real)
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130
Baseline.py
130
Baseline.py
@ -4,7 +4,6 @@ from models.LIFACnoise import LifacNoiseModel
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from stimuli.SinusoidalStepStimulus import SinusoidalStepStimulus
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import helperFunctions as hF
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import numpy as np
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from warnings import warn
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import matplotlib.pyplot as plt
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@ -35,7 +34,53 @@ class Baseline:
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raise NotImplementedError("NOT YET OVERRIDDEN FROM ABSTRACT CLASS")
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@staticmethod
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def plot_baseline_given_data(time, eod, v1, spiketimes, sampling_interval, save_path=None, time_length=0.2):
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def _get_baseline_frequency_given_data(spiketimes):
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base_freqs = []
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for st in spiketimes:
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base_freqs.append(hF.calculate_mean_isi_freq(st))
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return np.median(base_freqs)
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@staticmethod
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def _get_serial_correlation_given_data(max_lag, spikestimes):
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serial_cors = []
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for st in spikestimes:
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sc = hF.calculate_serial_correlation(st, max_lag)
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serial_cors.append(sc)
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serial_cors = np.array(serial_cors)
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return np.mean(serial_cors, axis=0)
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@staticmethod
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def _get_vector_strength_given_data(times, eods, spiketimes, sampling_interval):
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vs_per_trial = []
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for i in range(len(spiketimes)):
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vs = hF.calculate_vector_strength_from_spiketimes(times[i], eods[i], spiketimes[i], sampling_interval)
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vs_per_trial.append(vs)
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return np.mean(vs_per_trial)
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@staticmethod
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def _get_coefficient_of_variation_given_data(spiketimes):
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# CV (stddev of ISI divided by mean ISI (np.diff(spiketimes))
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cvs = []
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for st in spiketimes:
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st = np.array(st)
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cvs.append(hF.calculate_coefficient_of_variation(st))
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return np.mean(cvs)
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@staticmethod
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def _get_interspike_intervals_given_data(spiketimes):
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isis = []
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for st in spiketimes:
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st = np.array(st)
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isis.extend(np.diff(st))
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return isis
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@staticmethod
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def _plot_baseline_given_data(time, eod, v1, spiketimes, sampling_interval, save_path=None, time_length=0.2):
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"""
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plots the stimulus / eod, together with the v1, spiketimes and frequency
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:return:
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@ -113,18 +158,8 @@ class BaselineCellData(Baseline):
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def get_baseline_frequency(self):
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if self.baseline_frequency == -1:
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base_freqs = []
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for freq in self.data.get_mean_isi_frequencies():
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delay = self.data.get_delay()
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sampling_interval = self.data.get_sampling_interval()
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if delay < 0.1:
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warn("BaselineCellData:get_baseline_Frequency(): Quite short delay at the start.")
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idx_start = int(0.025 / sampling_interval)
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idx_end = int((delay - 0.025) / sampling_interval)
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base_freqs.append(np.mean(freq[idx_start:idx_end]))
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self.baseline_frequency = np.median(base_freqs)
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spiketimes = self.data.get_base_spikes()
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self.baseline_frequency = self._get_baseline_frequency_given_data(spiketimes)
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return self.baseline_frequency
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@ -132,44 +167,23 @@ class BaselineCellData(Baseline):
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if self.vector_strength == -1:
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times = self.data.get_base_traces(self.data.TIME)
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eods = self.data.get_base_traces(self.data.EOD)
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v1_traces = self.data.get_base_traces(self.data.V1)
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self.vector_strength = hF.calculate_vector_strength_from_v1_trace(times, eods, v1_traces)
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spiketimes = self.data.get_base_spikes()
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sampling_interval = self.data.get_sampling_interval()
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self.vector_strength = self._get_vector_strength_given_data(times, eods, spiketimes, sampling_interval)
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return self.vector_strength
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def get_serial_correlation(self, max_lag):
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if len(self.serial_correlation) != max_lag:
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serial_cors = []
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for spiketimes in self.data.get_base_spikes():
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sc = hF.calculate_serial_correlation(spiketimes, max_lag)
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serial_cors.append(sc)
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serial_cors = np.array(serial_cors)
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mean_sc = np.mean(serial_cors, axis=0)
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self.serial_correlation = mean_sc
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self.serial_correlation = self._get_serial_correlation_given_data(max_lag, self.data.get_base_spikes())
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return self.serial_correlation
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def get_coefficient_of_variation(self):
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if self.coefficient_of_variation == -1:
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spiketimes = self.data.get_base_spikes()
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# CV (stddev of ISI divided by mean ISI (np.diff(spiketimes))
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cvs = []
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for st in spiketimes:
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st = np.array(st)
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cvs.append(hF.calculate_coefficient_of_variation(st))
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self.coefficient_of_variation = np.mean(cvs)
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self.coefficient_of_variation = self._get_coefficient_of_variation_given_data(self.data.get_base_spikes())
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return self.coefficient_of_variation
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def get_interspike_intervals(self):
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spiketimes = self.data.get_base_spikes()
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# CV (stddev of ISI divided by mean ISI (np.diff(spiketimes))
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isis = []
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for st in spiketimes:
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st = np.array(st)
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isis.extend(np.diff(st))
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return isis
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return self._get_interspike_intervals_given_data(self.data.get_base_spikes())
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def plot_baseline(self, save_path=None, time_length=0.2):
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# eod, v1, spiketimes, frequency
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@ -179,51 +193,59 @@ class BaselineCellData(Baseline):
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v1_trace = self.data.get_base_traces(self.data.V1)[0]
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spiketimes = self.data.get_base_spikes()[0]
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self.plot_baseline_given_data(time, eod, v1_trace, spiketimes,
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self.data.get_sampling_interval(), save_path, time_length)
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self._plot_baseline_given_data(time, eod, v1_trace, spiketimes,
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self.data.get_sampling_interval(), save_path, time_length)
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class BaselineModel(Baseline):
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simulation_time = 30
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def __init__(self, model: LifacNoiseModel, eod_frequency):
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def __init__(self, model: LifacNoiseModel, eod_frequency, trials=1):
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super().__init__()
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self.model = model
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self.eod_frequency = eod_frequency
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self.stimulus = SinusoidalStepStimulus(eod_frequency, 0)
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self.v1, self.spiketimes = model.simulate_fast(self.stimulus, self.simulation_time)
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self.eod = self.stimulus.as_array(0, self.simulation_time, model.get_sampling_interval())
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self.time = np.arange(0, self.simulation_time, model.get_sampling_interval())
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self.v1_traces = []
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self.spiketimes = []
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for i in range(trials):
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v, st = model.simulate_fast(self.stimulus, self.simulation_time)
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self.v1_traces.append(v)
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self.spiketimes.append(st)
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def get_baseline_frequency(self):
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if self.baseline_frequency == -1:
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self.baseline_frequency = hF.calculate_mean_isi_freq(self.spiketimes)
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self.baseline_frequency = self._get_baseline_frequency_given_data(self.spiketimes)
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return self.baseline_frequency
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def get_vector_strength(self):
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if self.vector_strength == -1:
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self.vector_strength = hF.calculate_vector_strength_from_spiketimes(self.time, self.eod, self.spiketimes,
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self.model.get_sampling_interval())
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times = [self.time] * len(self.spiketimes)
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eods = [self.eod] * len(self.spiketimes)
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sampling_interval = self.model.get_sampling_interval()
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self.vector_strength = self._get_vector_strength_given_data(times, eods, self.spiketimes, sampling_interval)
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return self.vector_strength
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def get_serial_correlation(self, max_lag):
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if len(self.serial_correlation) != max_lag:
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self.serial_correlation = hF.calculate_serial_correlation(self.spiketimes, max_lag)
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self.serial_correlation = self._get_serial_correlation_given_data(max_lag, self.spiketimes)
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return self.serial_correlation
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def get_coefficient_of_variation(self):
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if self.coefficient_of_variation == -1:
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self.coefficient_of_variation = hF.calculate_coefficient_of_variation(self.spiketimes)
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self.coefficient_of_variation = self._get_coefficient_of_variation_given_data(self.spiketimes)
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return self.coefficient_of_variation
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def get_interspike_intervals(self):
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return np.diff(self.spiketimes)
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return self._get_interspike_intervals_given_data(self.spiketimes)
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def plot_baseline(self, save_path=None, time_length=0.2):
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self.plot_baseline_given_data(self.time, self.eod, self.v1, self.spiketimes,
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self.model.get_sampling_interval(), save_path, time_length)
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self._plot_baseline_given_data(self.time, self.eod, self.v1_traces[0], self.spiketimes[0],
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self.model.get_sampling_interval(), save_path, time_length)
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def get_baseline_class(data, eod_freq=None) -> Baseline:
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@ -58,8 +58,14 @@ class CellData:
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def get_base_spikes(self):
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if self.base_spikes is None:
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self.base_spikes = self.parser.get_baseline_spiketimes()
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times = self.get_base_traces(self.TIME)
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eods = self.get_base_traces(self.EOD)
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v1_traces = self.get_base_traces(self.V1)
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spiketimes = []
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for i in range(len(times)):
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spiketimes.append(hf.detect_spiketimes(times[i], v1_traces[i]))
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self.base_spikes = spiketimes
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return self.base_spikes
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def get_base_isis(self):
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21
FiCurve.py
21
FiCurve.py
@ -82,7 +82,7 @@ class FICurve:
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else:
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return x_values[intersection_indicies[0]]
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def get_fi_curve_slope_at_f_zero_intersection(self):
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def get_f_zero_fit_slope_at_f_inf_fit_intersection(self):
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x = self.get_f_zero_and_f_inf_intersection()
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fit_vars = self.f_zero_fit
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return fu.derivative_full_boltzmann(x, fit_vars[0], fit_vars[1], fit_vars[2], fit_vars[3])
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@ -321,9 +321,11 @@ class FICurveCellData(FICurve):
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class FICurveModel(FICurve):
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def __init__(self, model, stimulus_values, eod_frequency):
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def __init__(self, model, stimulus_values, eod_frequency, trials=1):
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self.eod_frequency = eod_frequency
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self.model = model
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self.trials = trials
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self.spiketimes = []
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super().__init__(stimulus_values)
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def calculate_all_frequency_points(self):
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@ -338,10 +340,18 @@ class FICurveModel(FICurve):
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for c in self.stimulus_values:
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stimulus = SinusoidalStepStimulus(self.eod_frequency, c, stim_start, stim_duration)
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_, spiketimes = self.model.simulate_fast(stimulus, total_simulation_time)
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time, frequency = hF.calculate_time_and_frequency_trace(spiketimes, sampling_interval)
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if len(spiketimes) < 10 or len(time) == 0 or min(time) > stim_start \
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frequency_traces = []
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time_traces = []
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for i in range(self.trials):
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_, spiketimes = self.model.simulate_fast(stimulus, total_simulation_time)
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trial_time, trial_frequency = hF.calculate_time_and_frequency_trace(spiketimes, sampling_interval)
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frequency_traces.append(trial_frequency)
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time_traces.append(trial_time)
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time, frequency = hF.calculate_mean_of_frequency_traces(time_traces, frequency_traces, sampling_interval)
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if len(time) == 0 or min(time) > stim_start \
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or max(time) < stim_start + stim_duration:
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print("Too few spikes to calculate f_inf, f_0 and f_base")
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self.f_inf_frequencies.append(0)
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@ -358,6 +368,7 @@ class FICurveModel(FICurve):
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f_baseline = hF.detect_f_baseline_in_freq_trace(time, frequency, stim_start, sampling_interval)
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self.f_baseline_frequencies.append(f_baseline)
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def plot_f_point_detections(self, save_path=None):
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raise NotImplementedError("TODO sorry... "
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"The model version of the FiCurve class is still missing this implementation")
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57
Fitter.py
57
Fitter.py
@ -5,8 +5,6 @@ from CellData import CellData, icelldata_of_dir
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from Baseline import get_baseline_class
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from FiCurve import get_fi_curve_class
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from AdaptionCurrent import Adaption
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import helperFunctions as hF
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import functions as fu
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import numpy as np
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from warnings import warn
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from scipy.optimize import minimize
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@ -70,8 +68,6 @@ def run_with_real_data():
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start_par_count += 1
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print("START PARAMETERS:", start_par_count)
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parameter_set_path = results_path + "start_parameter_set_{}".format(start_par_count) + "/"
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start_time = time.time()
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fitter = Fitter()
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fmin, parameters = fitter.fit_model_to_data(cell_data, start_parameters)
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@ -79,6 +75,7 @@ def run_with_real_data():
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print(fmin)
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print(parameters)
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end_time = time.time()
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parameter_set_path = results_path + "start_par_set_{}_fmin_{:.2f}".format(start_par_count, fmin["fun"]) + "/"
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if not os.path.exists(parameter_set_path):
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os.makedirs(parameter_set_path)
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with open(parameter_set_path + "parameters_info.txt".format(start_par_count), "w") as file:
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@ -178,7 +175,7 @@ class Fitter:
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self.f_inf_slope = 0
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self.f_zero_values = []
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self.f_zero_slope = 0
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self.f_zero_slopes = []
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self.f_zero_fit = []
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self.tau_a = 0
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@ -203,12 +200,13 @@ class Fitter:
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self.f_zero_values = fi_curve.f_zero_frequencies
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self.f_zero_fit = fi_curve.f_zero_fit
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self.f_zero_slope = fi_curve.get_f_zero_fit_slope_at_straight()
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self.f_zero_slopes = [fi_curve.get_f_zero_fit_slope_at_stimulus_value(c) for c in self.fi_contrasts]
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# around 1/3 of the value at straight
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# self.f_zero_slope = fi_curve.get_fi_curve_slope_at(fi_curve.get_f_zero_and_f_inf_intersection())
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self.delta_a = (self.f_zero_slope / self.f_inf_slope) / 1000 # seems to work if divided by 1000...
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# seems to work if divided by 1000...
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self.delta_a = (fi_curve.get_f_zero_fit_slope_at_straight() / self.f_inf_slope) / 1000
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adaption = Adaption(data, fi_curve)
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self.tau_a = adaption.get_tau_real()
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@ -218,7 +216,6 @@ class Fitter:
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return self.fit_routine_5(data, start_parameters)
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def fit_routine_5(self, cell_data=None, start_parameters=None):
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# [error_bf, error_vs, error_sc, error_cv, error_f_inf, error_f_inf_slope, error_f_zero, error_f_zero_slope]
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self.counter = 0
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# fit only v_offset, mem_tau, input_scaling, dend_tau
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if start_parameters is None:
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@ -227,7 +224,10 @@ class Fitter:
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x0 = np.array([start_parameters["mem_tau"], start_parameters["noise_strength"],
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start_parameters["input_scaling"], self.tau_a, self.delta_a, start_parameters["dend_tau"]])
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initial_simplex = create_init_simples(x0, search_scale=2)
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error_weights = (0, 2, 5, 1, 1, 1, 0.5, 1)
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# error_list = [error_bf, error_vs, error_sc, error_cv,
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# error_f_inf, error_f_inf_slope, error_f_zero, error_f_zero_slope]
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error_weights = (0, 1, 1, 1, 1, 1, 1, 1)
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fmin = minimize(fun=self.cost_function_all,
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args=(error_weights,), x0=x0, method="Nelder-Mead",
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options={"initial_simplex": initial_simplex, "xatol": 0.001, "maxfev": 400, "maxiter": 400})
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@ -386,22 +386,13 @@ class Fitter:
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coefficient_of_variation = model_baseline.get_coefficient_of_variation()
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# f_infinities, f_infinities_slope = self.base_model.calculate_fi_markers(self.fi_contrasts, self.eod_freq)
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f_baselines, f_zeros, f_infinities = self.base_model.calculate_fi_curve(self.fi_contrasts, self.eod_freq)
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try:
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f_infinities_fit = hF.fit_clipped_line(self.fi_contrasts, f_infinities)
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except Exception as e:
|
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print("EXCEPTION IN FIT LINE!")
|
||||
print(e)
|
||||
f_infinities_fit = [0, 0]
|
||||
|
||||
f_infinities_slope = f_infinities_fit[0]
|
||||
try:
|
||||
f_zeros_fit = hF.fit_boltzmann(self.fi_contrasts, f_zeros)
|
||||
except Exception as e:
|
||||
print("EXCEPTION IN FIT BOLTZMANN!")
|
||||
print(e)
|
||||
f_zeros_fit = [0, 0, 0, 0]
|
||||
f_zero_slope = fu.full_boltzmann_straight_slope(f_zeros_fit[0], f_zeros_fit[1], f_zeros_fit[2], f_zeros_fit[3])
|
||||
fi_curve_model = get_fi_curve_class(self.base_model, self.fi_contrasts, self.eod_freq)
|
||||
f_zeros = fi_curve_model.get_f_zero_frequencies()
|
||||
f_infinities = fi_curve_model.get_f_inf_frequencies()
|
||||
f_infinities_slope = fi_curve_model.get_f_inf_slope()
|
||||
f_zero_slopes = [fi_curve_model.get_f_zero_fit_slope_at_stimulus_value(x) for x in self.fi_contrasts]
|
||||
|
||||
# print("fi-curve features calculated!")
|
||||
# calculate errors with reference values
|
||||
error_bf = abs((baseline_freq - self.baseline_freq) / self.baseline_freq)
|
||||
@ -413,20 +404,20 @@ class Fitter:
|
||||
error_sc = abs((serial_correlation[i] - self.serial_correlation[i]) / self.serial_correlation[i])
|
||||
error_sc = error_sc / self.sc_max_lag
|
||||
|
||||
error_f_inf_slope = abs((f_infinities_slope - self.f_inf_slope) / self.f_inf_slope) * 4
|
||||
error_f_inf = calculate_f_values_error(f_infinities, self.f_inf_values) * .5
|
||||
error_f_inf_slope = abs((f_infinities_slope - self.f_inf_slope) / self.f_inf_slope)
|
||||
error_f_inf = calculate_list_error(f_infinities, self.f_inf_values)
|
||||
|
||||
error_f_zero_slope = abs((f_zero_slope - self.f_zero_slope) / self.f_zero_slope)
|
||||
error_f_zero = calculate_f_values_error(f_zeros, self.f_zero_values)
|
||||
error_f_zero_slopes = calculate_list_error(f_zero_slopes, self.f_zero_slopes)
|
||||
error_f_zero = calculate_list_error(f_zeros, self.f_zero_values)
|
||||
|
||||
error_list = [error_bf, error_vs, error_sc, error_cv,
|
||||
error_f_inf, error_f_inf_slope, error_f_zero, error_f_zero_slope]
|
||||
error_f_inf, error_f_inf_slope, error_f_zero, error_f_zero_slopes]
|
||||
|
||||
if error_weights is not None and len(error_weights) == len(error_list):
|
||||
for i in range(len(error_weights)):
|
||||
error_list[i] = error_list[i] * error_weights[i]
|
||||
|
||||
elif len(error_weights) != len(error_list):
|
||||
if len(error_weights) != len(error_list):
|
||||
warn("Error weights had different length than errors and were ignored!")
|
||||
|
||||
error = sum(error_list)
|
||||
@ -446,14 +437,14 @@ class Fitter:
|
||||
self.f_inf_slope, f_infinities_slope, error_f_inf_slope),
|
||||
"f-infinity values:\nexpected:", np.around(self.f_inf_values), "\ncurrent: ", np.around(f_infinities),
|
||||
"\nerror: {:.3f}\n".format(error_f_inf),
|
||||
"f-zero slope - expected: {:.0f}, current: {:.0f}, error: {:.3f}\n".format(
|
||||
self.f_zero_slope, f_zero_slope, error_f_zero_slope),
|
||||
"f-zero slopes:\nexpected:", np.around(self.f_zero_slopes), "\ncurrent: ", np.around(f_zero_slopes),
|
||||
"\nerror: {:.3f}".format(error_f_zero_slopes),
|
||||
"f-zero values:\nexpected:", np.around(self.f_zero_values), "\ncurrent: ", np.around(f_zeros),
|
||||
"\nerror: {:.3f}".format(error_f_zero))
|
||||
return error_list
|
||||
|
||||
|
||||
def calculate_f_values_error(fit, reference):
|
||||
def calculate_list_error(fit, reference):
|
||||
error = 0
|
||||
for i in range(len(reference)):
|
||||
# TODO ??? add a constant to f_inf to allow for small differences in small values
|
||||
|
||||
@ -14,6 +14,9 @@ def fit_clipped_line(x, y):
|
||||
|
||||
def fit_boltzmann(x, y):
|
||||
max_f0 = float(max(y))
|
||||
if max_f0 == 0:
|
||||
return [0, 0, 0, 0]
|
||||
|
||||
min_f0 = 0.1 # float(min(self.f_zeros))
|
||||
mean_int = float(np.mean(x))
|
||||
|
||||
@ -21,10 +24,15 @@ def fit_boltzmann(x, y):
|
||||
total_change_int = max(x) - min(x)
|
||||
start_k = float((total_increase / total_change_int * 4) / max_f0)
|
||||
|
||||
popt, pcov = curve_fit(fu.full_boltzmann, x, y,
|
||||
p0=(max_f0, min_f0, start_k, mean_int),
|
||||
maxfev=10000, bounds=([0, 0, -np.inf, -np.inf], [np.inf, np.inf, np.inf, np.inf]))
|
||||
|
||||
try:
|
||||
popt, pcov = curve_fit(fu.full_boltzmann, x, y,
|
||||
p0=(max_f0, min_f0, start_k, mean_int),
|
||||
maxfev=10000, bounds=([0, 0, -np.inf, -np.inf], [np.inf, np.inf, np.inf, np.inf]))
|
||||
except RuntimeError as e:
|
||||
print("Error in fit boltzmann: ", str(e))
|
||||
print("x_values:", x)
|
||||
print("y_values:", y)
|
||||
return [0, 0, 0, 0]
|
||||
return popt
|
||||
|
||||
|
||||
@ -248,7 +256,9 @@ def calculate_coefficient_of_variation(spiketimes: np.ndarray) -> float:
|
||||
def calculate_serial_correlation(spiketimes: np.ndarray, max_lag: int) -> np.ndarray:
|
||||
isi = np.diff(spiketimes)
|
||||
if len(spiketimes) < max_lag + 1:
|
||||
raise ValueError("Given list to short, with given max_lag")
|
||||
warn("Cannot compute serial correlation with list shorter than max lag...")
|
||||
return np.zeros(max_lag)
|
||||
# raise ValueError("Given list to short, with given max_lag")
|
||||
|
||||
cor = np.zeros(max_lag)
|
||||
for lag in range(max_lag):
|
||||
@ -286,7 +296,7 @@ def calculate_vector_strength_from_v1_trace(times, eods, v1_traces):
|
||||
print("-----LENGTH OF TIMES = 0")
|
||||
|
||||
for recording in range(len(times)):
|
||||
spiketime_idices = detect_spikes(v1_traces[recording])
|
||||
spiketime_idices = detect_spikes_indices(v1_traces[recording])
|
||||
rel_spikes, eod_durs = eods_around_spikes(times[recording], eods[recording], spiketime_idices)
|
||||
relative_spike_times.extend(rel_spikes)
|
||||
eod_durations.extend(eod_durs)
|
||||
@ -305,7 +315,7 @@ def calculate_vector_strength_from_spiketimes(time, eod, spiketimes, sampling_in
|
||||
return __vector_strength__(rel_spikes, eod_durs)
|
||||
|
||||
|
||||
def detect_spikes(v1, split=20, threshold=3):
|
||||
def detect_spikes_indices(v1, split=20, threshold=3):
|
||||
total = len(v1)
|
||||
all_peaks = []
|
||||
|
||||
@ -323,6 +333,12 @@ def detect_spikes(v1, split=20, threshold=3):
|
||||
return all_peaks
|
||||
|
||||
|
||||
def detect_spiketimes(time, v1, split=20, threshold=3):
|
||||
all_peak_indicies = detect_spikes_indices(v1, split, threshold)
|
||||
|
||||
return [time[p_idx] for p_idx in all_peak_indicies]
|
||||
|
||||
|
||||
def calculate_phases(relative_spike_times, eod_durations):
|
||||
phase_times = np.zeros(len(relative_spike_times))
|
||||
|
||||
@ -455,6 +471,12 @@ def detect_f_zero_in_frequency_trace(time, frequency, stimulus_start, sampling_i
|
||||
# plt.plot(time[start_idx:end_idx], [f_zero for i in range(end_idx-start_idx)])
|
||||
# plt.show()
|
||||
|
||||
max_frequency = int(1/sampling_interval)
|
||||
int_f_zero = int(f_zero)
|
||||
if int_f_zero > max_frequency:
|
||||
raise AssertionError("Detection of f-zero went very wrong! frequency above 1/sampling_interval.")
|
||||
if int_f_zero > max(frequency):
|
||||
raise AssertionError("detected f_zero bigger than the highest peak in the frequency trace...")
|
||||
return f_zero
|
||||
|
||||
|
||||
|
||||
@ -1,12 +1,21 @@
|
||||
import numpy as np
|
||||
import matplotlib.pyplot as plt
|
||||
import helperFunctions as hF
|
||||
import functions as fu
|
||||
import time
|
||||
from stimuli.SinusoidalStepStimulus import SinusoidalStepStimulus
|
||||
|
||||
|
||||
def main():
|
||||
|
||||
x_values = np.arange(-1, 1, 0.01)
|
||||
popt = [0, 0, 0, 0]
|
||||
y_values = [fu.full_boltzmann(x, popt[0], popt[1], popt[2], popt[3]) for x in x_values]
|
||||
|
||||
plt.plot(x_values, y_values)
|
||||
plt.show()
|
||||
quit()
|
||||
|
||||
for freq in [700, 50, 100, 500, 1000]:
|
||||
reps = 1000
|
||||
start = time.time()
|
||||
|
||||
155
variableEffect.py
Normal file
155
variableEffect.py
Normal file
@ -0,0 +1,155 @@
|
||||
|
||||
from models.LIFACnoise import LifacNoiseModel
|
||||
from Baseline import BaselineModel
|
||||
from FiCurve import FICurveModel
|
||||
import numpy as np
|
||||
import matplotlib.pyplot as plt
|
||||
import copy
|
||||
|
||||
|
||||
SEARCH_WIDTH = 3
|
||||
SEARCH_PRECISION = 30
|
||||
CONTRASTS = np.arange(-0.4, 0.45, 0.1)
|
||||
|
||||
def main():
|
||||
model_parameters = {'threshold': 1,
|
||||
'step_size': 5e-05,
|
||||
'a_zero': 2,
|
||||
'delta_a': 0.2032269898801589,
|
||||
'mem_tau': 0.011314027210564803,
|
||||
'noise_strength': 0.056724809998220195,
|
||||
'v_zero': 0,
|
||||
'v_base': 0,
|
||||
'tau_a': 0.05958195972016753,
|
||||
'input_scaling': 119.81500448274554,
|
||||
'dend_tau': 0.0027746086464721723,
|
||||
'v_offset': -24.21875}
|
||||
|
||||
|
||||
|
||||
parameters_to_test = ["input_scaling", "dend_tau", "mem_tau", "noise_strength", "v_offset", "delta_a", "tau_a"]
|
||||
effect_data = []
|
||||
for p in parameters_to_test:
|
||||
print("Working on parameter " + p)
|
||||
effect_data.append(test_parameter_effect(model_parameters, p))
|
||||
|
||||
plot_effects(effect_data, "./figures/variable_effect/")
|
||||
|
||||
|
||||
def test_parameter_effect(model_parameters, test_parameter):
|
||||
model_parameters = copy.deepcopy(model_parameters)
|
||||
start_value = model_parameters[test_parameter]
|
||||
|
||||
start = start_value*(1/SEARCH_WIDTH)
|
||||
end = start_value*SEARCH_WIDTH
|
||||
step = (end - start) / SEARCH_PRECISION
|
||||
values = np.arange(start, end+step, step)
|
||||
|
||||
bf = []
|
||||
vs = []
|
||||
sc = []
|
||||
cv = []
|
||||
|
||||
f_inf_s = []
|
||||
f_inf_v = []
|
||||
f_zero_s = []
|
||||
f_zero_v = []
|
||||
|
||||
broken_i = []
|
||||
for i in range(len(values)):
|
||||
model_parameters[test_parameter] = values[i]
|
||||
model = LifacNoiseModel(model_parameters)
|
||||
|
||||
fi_curve = FICurveModel(model, CONTRASTS, 600, trials=50)
|
||||
f_inf_s.append(fi_curve.get_f_inf_slope())
|
||||
f_inf_v.append(fi_curve.get_f_inf_frequencies())
|
||||
f_zero_s.append(fi_curve.get_f_zero_fit_slope_at_stimulus_value(0.1))
|
||||
f_zero_v.append(fi_curve.get_f_zero_frequencies())
|
||||
|
||||
baseline = BaselineModel(model, 600, trials=10)
|
||||
bf.append(baseline.get_baseline_frequency())
|
||||
vs.append(baseline.get_vector_strength())
|
||||
sc.append(baseline.get_serial_correlation(2))
|
||||
cv.append(baseline.get_coefficient_of_variation())
|
||||
|
||||
values = list(values)
|
||||
if len(broken_i) > 0:
|
||||
broken_i = sorted(broken_i, reverse=True)
|
||||
for i in broken_i:
|
||||
del values[i]
|
||||
|
||||
return ParameterEffectData(values, test_parameter, bf, vs, sc, cv, f_inf_s, f_inf_v, f_zero_s, f_zero_v)
|
||||
# plot_effects(values, test_parameter, bf, vs, sc, cv, f_inf_s, f_inf_v, f_zero_s, f_zero_v)
|
||||
|
||||
|
||||
def plot_effects(par_effect_data_list, save_path=None):
|
||||
|
||||
fig, axes = plt.subplots(8, len(par_effect_data_list), figsize=(32, 4*len(par_effect_data_list)), sharex="col")
|
||||
|
||||
names = ("bf", "vs", "sc", "cv", "f_inf_s", "f_inf_v", "f_zero_s", "f_zero_v")
|
||||
|
||||
for j in range(len(par_effect_data_list)):
|
||||
ped = par_effect_data_list[j]
|
||||
|
||||
ranges = ((0, max(ped.get_data("bf")) * 1.1), (0, 1), (-1, 1), (0, 1),
|
||||
(0, max(ped.get_data("f_inf_s")) * 1.1), (0, 800),
|
||||
(0, max(ped.get_data("f_zero_s")) * 1.1), (0, 3000))
|
||||
values = ped.values
|
||||
|
||||
for i in range(len(names)):
|
||||
y_data = ped.get_data(names[i])
|
||||
axes[i, j].plot(values, y_data)
|
||||
axes[i, j].set_ylim(ranges[i])
|
||||
|
||||
if j == 0:
|
||||
axes[i, j].set_ylabel(names[i])
|
||||
|
||||
if i == 0:
|
||||
axes[i, j].set_title(ped.test_parameter)
|
||||
|
||||
plt.tight_layout()
|
||||
if save_path is not None:
|
||||
plt.savefig(save_path + "variable_effect_master_plot.png")
|
||||
else:
|
||||
plt.show()
|
||||
plt.close()
|
||||
|
||||
|
||||
class ParameterEffectData:
|
||||
data_names = ("bf", "vs", "sc", "cv", "f_inf_s", "f_inf_v" "f_zero_s", "f_zero_v")
|
||||
|
||||
def __init__(self, values, test_parameter, bf, vs, sc, cv, f_inf_s, f_inf_v, f_zero_s, f_zero_v):
|
||||
self.values = values
|
||||
self.test_parameter = test_parameter
|
||||
self.bf = bf
|
||||
self.vs = vs
|
||||
self.sc = sc
|
||||
self.cv = cv
|
||||
self.f_inf_s = f_inf_s
|
||||
self.f_inf_v = f_inf_v
|
||||
self.f_zero_s = f_zero_s
|
||||
self.f_zero_v = f_zero_v
|
||||
|
||||
def get_data(self, name):
|
||||
if name == "bf":
|
||||
return self.bf
|
||||
elif name == "vs":
|
||||
return self.vs
|
||||
elif name == "sc":
|
||||
return self.sc
|
||||
elif name == "cv":
|
||||
return self.cv
|
||||
elif name == "f_inf_s":
|
||||
return self.f_inf_s
|
||||
elif name == "f_inf_v":
|
||||
return self.f_inf_v
|
||||
elif name == "f_zero_s":
|
||||
return self.f_zero_s
|
||||
elif name == "f_zero_v":
|
||||
return self.f_zero_v
|
||||
else:
|
||||
raise ValueError("Unknown attribute name!")
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
Loading…
Reference in New Issue
Block a user