提交 4c6dee93 编写于 作者: J jacquesqiao 提交者: GitHub

Merge pull request #1712 from jacquesqiao/add-plot

add plot cost in v2 api
from IPython import display
import os
class PlotCost(object):
"""
append train and test cost in event_handle and then call plot.
"""
def __init__(self):
self.train_costs = ([], [])
self.test_costs = ([], [])
self.__disable_plot__ = os.environ.get("DISABLE_PLOT")
if not self.__plot_is_disabled__():
import matplotlib.pyplot as plt
self.plt = plt
def __plot_is_disabled__(self):
return self.__disable_plot__ == "True"
def plot(self):
if self.__plot_is_disabled__():
return
self.plt.plot(*self.train_costs)
self.plt.plot(*self.test_costs)
title = []
if len(self.train_costs[0]) > 0:
title.append('Train Cost')
if len(self.test_costs[0]) > 0:
title.append('Test Cost')
self.plt.legend(title, loc='upper left')
display.clear_output(wait=True)
display.display(self.plt.gcf())
self.plt.gcf().clear()
def append_train_cost(self, step, cost):
self.train_costs[0].append(step)
self.train_costs[1].append(cost)
def append_test_cost(self, step, cost):
self.test_costs[0].append(step)
self.test_costs[1].append(cost)
def reset(self):
self.train_costs = ([], [])
self.test_costs = ([], [])
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