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seqskip_train_S_seq1eH_eBCEL1uc.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Sat Dec 29 13:44:03 2018
Student Net
S_seq1eH_e
- non-autoregressive (not feeding predicted labels)
- instance Norm.
- G: GLU version
- H: Highway-net version
@author: mimbres
"""
import torch
import torch.nn as nn
import torch.nn.functional as F
from torch.autograd import Variable
from torch.optim.lr_scheduler import StepLR
from torch.backends import cudnn
import numpy as np
import glob, os
import argparse
from tqdm import trange, tqdm
from spotify_data_loader import SpotifyDataloader
from utils.eval import evaluate
from blocks.highway_glu_dil_conv_v2 import HighwayDCBlock
from copy import deepcopy
#from blocks.multihead_attention import MultiHeadAttention
cudnn.benchmark = True
parser = argparse.ArgumentParser(description="Sequence Skip Prediction")
parser.add_argument("-c","--config",type=str, default="./config_init_dataset.json")
parser.add_argument("-s","--save_path",type=str, default="./save/exp_S_seq1eH_eBCEL1uc/")
parser.add_argument("-l","--load_continue_latest",type=str, default=None)
parser.add_argument("-t","--load_teacher_net_fpath",type=str, default="./save/exp_T_seq1eH/check_8_48811.pth")
parser.add_argument("-glu","--use_glu", type=bool, default=False)
parser.add_argument("-w","--class_num",type=int, default = 2)
parser.add_argument("-e","--epochs",type=int, default= 10)
parser.add_argument("-lr","--learning_rate", type=float, default = 0.001)
parser.add_argument("-b","--train_batch_size", type=int, default = 2048)
parser.add_argument("-tsb","--test_batch_size", type=int, default = 1024)
parser.add_argument("-g","--gpu",type=int, default=0)
args = parser.parse_args()
# Hyper Parameters
FPATH_T_NET_CHECKPOINT = args.load_teacher_net_fpath
USE_GLU = args.use_glu
INPUT_DIM = 72
CLASS_NUM = args.class_num
EPOCHS = args.epochs
LEARNING_RATE = args.learning_rate
TR_BATCH_SZ = args.train_batch_size
TS_BATCH_SZ = args.test_batch_size
GPU = args.gpu
# Model-save directory
MODEL_SAVE_PATH = args.save_path
os.makedirs(os.path.dirname(MODEL_SAVE_PATH), exist_ok=True)
hist_trloss = list()
hist_tracc = list()
hist_vloss = list()
hist_vacc = list()
np.set_printoptions(precision=3)
class SeqEncoder(nn.Module):
def __init__(self, input_ch, e_ch,
h_k_szs=[2,2,2,3,1,1], #h_k_szs=[2,2,5,1,1],
h_dils=[1,2,4,8,1,1],
causality=True,
use_glu=False):
super(SeqEncoder, self).__init__()
h_io_chs = [e_ch]*len(h_k_szs)
self.front_1x1 = nn.Conv1d(input_ch, e_ch,1)
self.h_block = HighwayDCBlock(h_io_chs, h_k_szs, h_dils, causality=causality, use_glu=use_glu)
self.mid_1x1 = nn.Sequential(nn.Conv1d(e_ch,e_ch,1), nn.ReLU(),
nn.Conv1d(e_ch,e_ch,1), nn.ReLU())
self.last_1x1 = nn.Sequential(nn.Conv1d(e_ch,e_ch,1))
def forward(self, x): # Input:bx(input_dim)*20
x = self.front_1x1(x) # bx128*20
x = self.h_block(x) # bx128*20
x = self.mid_1x1(x) # bx128*20
return self.last_1x1(x) # bx128*20
class SeqModel(nn.Module):
def __init__(self, input_dim=INPUT_DIM, e_ch=128, d_ch=128, use_glu=USE_GLU):
super(SeqModel, self).__init__()
self.e_ch = e_ch
self.d_ch = d_ch
self.enc = SeqEncoder(input_ch=input_dim, e_ch=e_ch,
h_k_szs=[2,2,2,3,1,1], #h_k_szs=[2,2,2,3,1,1],
h_dils=[1,2,4,8,1,1], #h_dils=[1,2,4,8,1,1],
use_glu=use_glu) # bx128*10
self.feature = nn.Sequential(nn.Conv1d(d_ch,d_ch,1), nn.ReLU(),
nn.Conv1d(d_ch,d_ch,1), nn.ReLU())
self.classifier = nn.Conv1d(d_ch,1,1)
def forward(self, x):
x = self.enc(x) # bx128*10
x = self.feature(x)
x = self.classifier(x).squeeze(1) # bx256*10 --> b*10
return x# bx20
class SeqModel_Student(nn.Module):
def __init__(self, input_dim=INPUT_DIM, e_ch=128, d_ch=128, use_glu=USE_GLU):
super(SeqModel_Student, self).__init__()
self.e_ch = e_ch
self.d_ch = d_ch
self.enc = SeqEncoder(input_ch=input_dim, e_ch=e_ch,
h_k_szs=[2,2,2,3,1,1], #h_k_szs=[2,2,2,3,1,1],
h_dils=[1,2,4,8,1,1], #h_dils=[1,2,4,8,1,1],
use_glu=use_glu) # bx128*10
self.feature = nn.Sequential(nn.Conv1d(d_ch,d_ch,1), nn.ReLU(),
nn.Conv1d(d_ch,d_ch,1), nn.ReLU())
self.classifier = nn.Conv1d(d_ch,1,1)
def forward(self, x):
enc_out = self.enc(x) # bx128*10
x = self.feature(enc_out)
x = self.classifier(x).squeeze(1) # bx256*10 --> b*10
return enc_out, x# bx20
#%%
def validate(mval_loader, SM, eval_mode, GPU):
tqdm.write("Validation...")
submit = []
gt = []
total_vloss = 0
total_vcorrects = 0
total_vquery = 0
val_sessions_iter = iter(mval_loader)
for val_session in trange(len(val_sessions_iter), desc='val-sessions', position=2, ascii=True):
SM.eval()
x, labels, y_mask, num_items, index = val_sessions_iter.next() # FIXED 13.Dec. SEPARATE LOGS. QUERY SHOULT NOT INCLUDE LOGS
# Sample data for 'support' and 'query': ex) 15 items = 7 sup, 8 queries...
num_support = num_items[:,0].detach().numpy().flatten() # If num_items was odd number, query has one more item.
num_query = num_items[:,1].detach().numpy().flatten()
batch_sz = num_items.shape[0]
# x: the first 10 items out of 20 are support items left-padded with zeros. The last 10 are queries right-padded.
x = x.permute(0,2,1) # bx70*20
x_feat = torch.zeros(batch_sz, 72, 20)
x_feat[:,:70,:] = x.clone()
x_feat[:, 70,:10] = 1
x_feat[:, 71,:10] = labels[:,:10].clone()
x_feat = Variable(x_feat, requires_grad=False).cuda(GPU)
# y
y = labels.clone()
# y_mask
y_mask_que = y_mask.clone()
y_mask_que[:,:10] = 0
# Forward & update
_, y_hat = SM(x_feat) # y_hat: b*20
# if USE_PRED_LABEL is True:
# # Predict
# li = 70 if USE_SUPLOG is True else 29 # the label's dimension indice
# _x = x[:,:,:11] # bx72*11
# for q in range(11,20):
# y_hat = SM(Variable(_x, requires_grad=False)) # will be bx11 at the first round
# # Append next features
# _x = torch.cat((_x, x[:,:,q].unsqueeze(2)), 2) # now bx72*12
# _x[:,li,q] = torch.sigmoid(y_hat[:,-1])
# y_hat = SM(Variable(_x, requires_grad=False)) # y_hat(final): bx20
# del _x
# else:
# y_hat = SM(x)
# Calcultate BCE loss: 뒤에q만 봄
loss = F.binary_cross_entropy_with_logits(input=y_hat*y_mask_que.cuda(GPU), target=y.cuda(GPU)*y_mask_que.cuda(GPU))
total_vloss += loss.item()
# Decision
y_prob = torch.sigmoid(y_hat*y_mask_que.cuda(GPU)).detach().cpu().numpy() # bx20
y_pred = (y_prob[:,10:]>0.5).astype(np.int) # bx10
y_numpy = labels[:,10:].numpy() # bx10
# Acc
total_vcorrects += np.sum((y_pred==y_numpy)*y_mask_que[:,10:].numpy())
total_vquery += np.sum(num_query)
# Eval, Submission
if eval_mode is not 0:
for b in np.arange(batch_sz):
submit.append(y_pred[b,:num_query[b]].flatten())
gt.append(y_numpy[b,:num_query[b]].flatten())
if (val_session+1)%400 == 0:
sample_sup = labels[0,(10-num_support[0]):10].long().numpy().flatten()
sample_que = y_numpy[0,:num_query[0]].astype(int)
sample_pred = y_pred[0,:num_query[0]]
sample_prob = y_prob[0,10:10+num_query[0]]
tqdm.write("S:" + np.array2string(sample_sup) +'\n'+
"Q:" + np.array2string(sample_que) + '\n' +
"P:" + np.array2string(sample_pred) + '\n' +
"prob:" + np.array2string(sample_prob))
tqdm.write("val_session:{0:} vloss:{1:.6f} vacc:{2:.4f}".format(val_session,loss.item(), total_vcorrects/total_vquery))
del loss, y_hat, x # Restore GPU memory
# Avg.Acc
if eval_mode==1:
aacc = evaluate(submit, gt)
tqdm.write("AACC={0:.6f}, FirstAcc={1:.6f}".format(aacc[0], aacc[1]))
hist_vloss.append(total_vloss/val_session)
hist_vacc.append(total_vcorrects/total_vquery)
return submit
# Main
def main():
# Trainset stats: 2072002577 items from 124950714 sessions
print('Initializing dataloader...')
mtrain_loader = SpotifyDataloader(config_fpath=args.config,
mtrain_mode=True,
data_sel=(0, 99965071), # 80% 트레인
batch_size=TR_BATCH_SZ,
shuffle=True,
seq_mode=True) # seq_mode implemented
mval_loader = SpotifyDataloader(config_fpath=args.config,
mtrain_mode=True, # True, because we use part of trainset as testset
data_sel=(99965071, 104965071),#(99965071, 124950714), # 20%를 테스트
batch_size=TS_BATCH_SZ,
shuffle=False,
seq_mode=True)
# Load Teacher net
SMT = SeqModel().cuda(GPU)
checkpoint = torch.load(FPATH_T_NET_CHECKPOINT, map_location='cuda:{}'.format(GPU))
tqdm.write("Loading saved teacher model from '{0:}'... loss: {1:.6f}".format(FPATH_T_NET_CHECKPOINT,checkpoint['loss']))
SMT.load_state_dict(checkpoint['SM_state'])
SMT_Enc = nn.Sequential(*list(SMT.children())[:1]).cuda(GPU)
#SMT_EncFeat = nn.Sequential(*list(SMT.children())[:2])
# Init Student net --> copy classifier from the Teacher net
SM = SeqModel_Student().cuda(GPU)
SM.feature = deepcopy(SMT.feature)
# for p in list(SM.feature.parameters()):
# p.requires_grad = False
SM.classifier = deepcopy(SMT.classifier)
# SM.classifier.weight.requires_grad = False
# SM.classifier.bias.requires_grad = False
SM = SM.cuda(GPU)
Distill_parameters = SM.enc.parameters()
Classifier_parameters = [{'params': SM.feature.parameters()},
{'params': SM.classifier.parameters()}]
SM_optim = torch.optim.Adam(Distill_parameters, lr=LEARNING_RATE)
SM_scheduler = StepLR(SM_optim, step_size=1, gamma=0.9)
SM2_optim = torch.optim.Adam(Classifier_parameters, lr=LEARNING_RATE)
# Load checkpoint
if args.load_continue_latest is None:
START_EPOCH = 0
else:
latest_fpath = max(glob.iglob(MODEL_SAVE_PATH + "check*.pth"),key=os.path.getctime)
checkpoint = torch.load(latest_fpath, map_location='cuda:{}'.format(GPU))
tqdm.write("Loading saved model from '{0:}'... loss: {1:.6f}".format(latest_fpath,checkpoint['loss']))
SM.load_state_dict(checkpoint['SM_state'])
SM_optim.load_state_dict(checkpoint['SM_opt_state'])
SM_scheduler.load_state_dict(checkpoint['SM_sch_state'])
START_EPOCH = checkpoint['ep']
# Train
for epoch in trange(START_EPOCH, EPOCHS, desc='epochs', position=0, ascii=True):
tqdm.write('Train...')
tr_sessions_iter = iter(mtrain_loader)
total_corrects = 0
total_query = 0
total_trloss = 0
for session in trange(len(tr_sessions_iter), desc='sessions', position=1, ascii=True):
SMT.eval(); # Teacher-net
SM.train(); # Student-net
x, labels, y_mask, num_items, index = tr_sessions_iter.next() # FIXED 13.Dec. SEPARATE LOGS. QUERY SHOULT NOT INCLUDE LOGS
# Sample data for 'support' and 'query': ex) 15 items = 7 sup, 8 queries...
num_support = num_items[:,0].detach().numpy().flatten() # If num_items was odd number, query has one more item.
num_query = num_items[:,1].detach().numpy().flatten()
batch_sz = num_items.shape[0]
# x: the first 10 items out of 20 are support items left-padded with zeros. The last 10 are queries right-padded.
x = x.permute(0,2,1) # bx70*20
# x_feat_T: Teacher-net input, x_feat_S: Student-net input(que-log is excluded)
x_feat_T = torch.zeros(batch_sz, 72, 20)
x_feat_T[:,:70,:] = x.clone()
x_feat_T[:, 70,:10] = 1 # Sup/Que state indicator
x_feat_T[:, 71,:10] = labels[:,:10].clone()
x_feat_S = x_feat_T.clone()
x_feat_S[:, :41, 10:] = 0 # remove que-log
x_feat_T = x_feat_T.cuda(GPU)
x_feat_S = Variable(x_feat_S).cuda(GPU)
# Target: Prepare Teacher's intermediate output
enc_target = SMT_Enc(x_feat_T)
#target = SMT_EncFeat(x_feat_T)
# y
y = labels.clone()
# y_mask
y_mask_que = y_mask.clone()
y_mask_que[:,:10] = 0
# Forward & update
y_hat_enc, y_hat = SM(x_feat_S) # y_hat: b*20
# Calcultate Distillation loss
loss1 = F.binary_cross_entropy_with_logits(input=y_hat_enc, target=torch.sigmoid(enc_target.cuda(GPU)))
loss2 = F.l1_loss(input=y_hat_enc, target=enc_target.cuda(GPU))
loss = loss1+loss2
total_trloss += loss.item()
SM.zero_grad()
loss.backward(retain_graph=True)
# Update Enc
SM_optim.step()
# Calculate Classifier loss
loss_c = F.binary_cross_entropy_with_logits(input=y_hat*y_mask_que.cuda(GPU), target=y.cuda(GPU)*y_mask_que.cuda(GPU))
SM.zero_grad()
loss_c.backward()
# Update Classifier and feature
SM2_optim.step()
# Decision
SM.eval();
y_prob = torch.sigmoid(y_hat*y_mask_que.cuda(GPU)).detach().cpu().numpy() # bx20
y_pred = (y_prob[:,10:]>0.5).astype(np.int) # bx10
y_numpy = labels[:,10:].numpy() # bx10
# Acc
total_corrects += np.sum((y_pred==y_numpy)*y_mask_que[:,10:].numpy())
total_query += np.sum(num_query)
# Restore GPU memory
del loss, loss_c, y_hat, y_hat_enc
if (session+1)%500 == 0:
hist_trloss.append(total_trloss/900)
hist_tracc.append(total_corrects/total_query)
# Prepare display
sample_sup = labels[0,(10-num_support[0]):10].long().numpy().flatten()
sample_que = y_numpy[0,:num_query[0]].astype(int)
sample_pred = y_pred[0,:num_query[0]]
sample_prob = y_prob[0,10:10+num_query[0]]
tqdm.write("S:" + np.array2string(sample_sup) +'\n'+
"Q:" + np.array2string(sample_que) + '\n' +
"P:" + np.array2string(sample_pred) + '\n' +
"prob:" + np.array2string(sample_prob))
tqdm.write("tr_session:{0:} tr_loss:{1:.6f} tr_acc:{2:.4f}".format(session, hist_trloss[-1], hist_tracc[-1]))
total_corrects = 0
total_query = 0
total_trloss = 0
if (session+1)%25000 == 0:
# Validation
validate(mval_loader, SM, eval_mode=True, GPU=GPU)
# Save
torch.save({'ep': epoch, 'sess':session, 'SM_state': SM.state_dict(),'loss': hist_trloss[-1], 'hist_vacc': hist_vacc,
'hist_vloss': hist_vloss, 'hist_trloss': hist_trloss, 'SM_opt_state': SM_optim.state_dict(),
'SM_sch_state': SM_scheduler.state_dict()}, MODEL_SAVE_PATH + "check_{0:}_{1:}.pth".format(epoch, session))
# Validation
validate(mval_loader, SM, eval_mode=True, GPU=GPU)
# Save
torch.save({'ep': epoch, 'sess':session, 'SM_state': SM.state_dict(),'loss': hist_trloss[-1], 'hist_vacc': hist_vacc,
'hist_vloss': hist_vloss, 'hist_trloss': hist_trloss, 'SM_opt_state': SM_optim.state_dict(),
'SM_sch_state': SM_scheduler.state_dict()}, MODEL_SAVE_PATH + "check_{0:}_{1:}.pth".format(epoch, session))
SM_scheduler.step()
if __name__ == '__main__':
main()