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ascertain_train_test.py
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from ascertain import ASCERTAINTrSet, ASCERTAINTsSet
from avalanche.benchmarks.generators import dataset_benchmark
from avalanche.benchmarks.utils import AvalancheDataset
from avalanche.models import SimpleMLP
from avalanche.training.strategies import Naive, Cumulative, LwF, EWC, JointTraining, GEM, Replay
from torch.optim import Adam
from torch.nn import CrossEntropyLoss, MSELoss
from avalanche.evaluation.metrics import forgetting_metrics, accuracy_metrics, loss_metrics, timing_metrics, cpu_usage_metrics, confusion_matrix_metrics, disk_usage_metrics, gpu_usage_metrics
from avalanche.training.plugins import EvaluationPlugin, EarlyStoppingPlugin
from avalanche.logging import InteractiveLogger, TextLogger, TensorboardLogger
import pickle
import torch.nn as nn
import torch
import numpy as np
import sys
import time
class Classifier(nn.Module):
def __init__(self, in_dim, hidden_dim, out_dim, layers=1):
super().__init__()
self.rnn = nn.GRU(in_dim, hidden_dim, layers, batch_first=True)
self.clf = nn.Linear(hidden_dim, out_dim)
def forward(self, x):
# batch_size first
x, _ = self.rnn(x) # _ to ignore state
x = x[:, -1] # last timestep for classfication
return self.clf(x)
import warnings
warnings.filterwarnings("ignore")
def train_ascertain(strat, i=""):
scenario = dataset_benchmark(
[AvalancheDataset(ASCERTAINTrSet(pair=0), task_labels=1),
AvalancheDataset(ASCERTAINTrSet(pair=1), task_labels=2),
AvalancheDataset(ASCERTAINTrSet(pair=2), task_labels=3),
AvalancheDataset(ASCERTAINTrSet(pair=3), task_labels=4),
AvalancheDataset(ASCERTAINTrSet(pair=4), task_labels=5),
AvalancheDataset(ASCERTAINTrSet(pair=5), task_labels=6),
AvalancheDataset(ASCERTAINTrSet(pair=6), task_labels=7),
AvalancheDataset(ASCERTAINTrSet(pair=7), task_labels=8),
AvalancheDataset(ASCERTAINTrSet(pair=7), task_labels=9)],
[AvalancheDataset(ASCERTAINTsSet(), task_labels=0)]
)
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
tb_logger = TensorboardLogger()
text_logger = TextLogger(open('ascertainlog.txt', 'a'))
int_logger = InteractiveLogger()
eval_plugin = EvaluationPlugin(
accuracy_metrics(minibatch=True, epoch=True, experience=True, stream=True), # forward = - backward su streaming, stream è la media
loss_metrics(minibatch=True, epoch=True, experience=True, stream=True),
timing_metrics(epoch=True, epoch_running=True),
forgetting_metrics(experience=True, stream=True),
cpu_usage_metrics(experience=True),
gpu_usage_metrics(0, experience=True),
disk_usage_metrics(minibatch=True, epoch=True, experience=True, stream=True),
loggers=[text_logger]
)
es = EarlyStoppingPlugin(patience=25, val_stream_name="train_stream")
results = []
model = Classifier(in_dim=17, hidden_dim=18, out_dim=4, layers=2)
if (strat == "naive"):
print("Naive continual learning")
strategy = Naive(model, Adam(model.parameters(), lr=0.005, betas=(0.99, 0.99)), CrossEntropyLoss(), train_epochs=100, eval_every=1, plugins=[es], evaluator=eval_plugin, device=device)
elif (strat == "offline"):
print("Offline learning")
strategy = JointTraining(model, Adam(model.parameters(), lr=0.005, betas=(0.99, 0.99)), CrossEntropyLoss(), train_epochs=100, eval_every=1, plugins=[es], evaluator=eval_plugin, device=device)
elif (strat == "cumulative"):
print("Cumulative continual learning")
strategy = Cumulative(model, Adam(model.parameters(), lr=0.005, betas=(0.99, 0.99)), CrossEntropyLoss(), train_epochs=100, eval_every=1, plugins=[es], evaluator=eval_plugin, device=device)
elif (strat == "replay"):
print("Replay training")
strategy = Replay(model, Adam(model.parameters(), lr=0.005, betas=(0.99, 0.99)), CrossEntropyLoss(), train_epochs=100, eval_every=1, plugins=[es], evaluator=eval_plugin, device=device, mem_size=25, train_mb_size=25) #circa 25% of ASCERTAIN
elif (strat == "lwf"):
print("LwF continual learning")
strategy = LwF(model, Adam(model.parameters(), lr=0.005, betas=(0.99, 0.99)), CrossEntropyLoss(), train_epochs=100, eval_every=1, plugins=[es], evaluator=eval_plugin, device=device, alpha=0.5, temperature=1)
elif (strat == "ewc"):
print("EWC continual learning")
torch.backends.cudnn.enabled = False
strategy = EWC(model, Adam(model.parameters(), lr=0.005, betas=(0.99, 0.99)), CrossEntropyLoss(), train_epochs=100, eval_every=1, plugins=[es], evaluator=eval_plugin, device=device, ewc_lambda=0.99)
elif (strat == "episodic"):
print("Episodic continual learning")
strategy = GEM(model, Adam(model.parameters(), lr=0.005, betas=(0.99, 0.99)), CrossEntropyLoss(), train_epochs=1, eval_every=1, plugins=[es], evaluator=eval_plugin, device=device, patterns_per_exp=70)
thisresults = []
print(i + ".")
start = time.time()
if strat == "offline":
res = strategy.train(scenario.train_stream)
r = strategy.eval(scenario.test_stream)
thisresults.append({"loss":r["Loss_Exp/eval_phase/test_stream/Task000/Exp000"],
"acc":(float(r["Top1_Acc_Exp/eval_phase/test_stream/Task000/Exp000"])*100),
"forg":r["StreamForgetting/eval_phase/test_stream"],
"all":r})
results.append({"strategy":strat,
"finalloss":r["Loss_Exp/eval_phase/test_stream/Task000/Exp000"],
"finalacc":r["Top1_Acc_Exp/eval_phase/test_stream/Task000/Exp000"],
"results":thisresults})
else:
for experience in scenario.train_stream:
res = strategy.train(experience)
r = strategy.eval(scenario.test_stream)
thisresults.append({"loss":r["Loss_Exp/eval_phase/test_stream/Task000/Exp000"],
"acc":(float(r["Top1_Acc_Exp/eval_phase/test_stream/Task000/Exp000"])*100),
"forg":r["StreamForgetting/eval_phase/test_stream"],
"all":r})
results.append({"strategy":strat,
"finalloss":r["Loss_Exp/eval_phase/test_stream/Task000/Exp000"],
"finalacc":r["Top1_Acc_Exp/eval_phase/test_stream/Task000/Exp000"],
"results":thisresults})
elapsed = time.time() - start
results.append({"time":elapsed})
with open("results/ascertain_" + strat + "_results" + i + ".pkl", "wb") as outfile:
pickle.dump(results, outfile)
print("\t" + str(elapsed) + " seconds")
for i in range(5):
train_ascertain(sys.argv[1].strip(), str(i))