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.gitignore
vendored
1
.gitignore
vendored
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*~
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*.swp
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*.o
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venv/
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40
src/Model.py
40
src/Model.py
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import torch
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class NgramModel(torch.nn.Module):
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def __init__(self, vocab_size, n_hidden=256, n_layers=3, drop_prob=0.3, lr=0.001):
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super().__init__()
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self.drop_prob = drop_prob
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self.n_hidden = n_hidden
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self.n_layers = n_layers
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self.lr = lr
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self.vocab_size = vocab_size
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self.embeddings = torch.nn.Embedding(self.vocab_size, 200)
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self.rnn = torch.nn.RNN(200, self.n_hidden, self.n_layers, dropout = self.drop_prob, batch_first=True)
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self.dropout = torch.nn.Dropout(self.drop_prob)
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self.lin = torch.nn.Linear(self.n_hidden, self.vocab_size)
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def forward(self, x, hidden):
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embedded = self.embeddings(x)
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output, hidden = self.rnn(embedded, hidden)
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out = self.dropout(output)
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out = out.reshape(-1, self.n_hidden)
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out = self.lin(out)
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return out, hidden
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def init_hidden(self, batch_size):
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weight = next(self.parameters()).data
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if torch.cuda.is_available():
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hidden = weight.new(self.n_layers, batch_size, self.n_hidden).zero_().cuda()
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else:
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hidden = weight.new(self.n_layers, batch_size, self.n_hidden).zero_()
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return hidden
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197
src/train.py
197
src/train.py
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#!/usr/bin/env python
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print("Imports")
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import argparse
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import re
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import pickle
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import random
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import numpy as np
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import torch
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from Model import NgramModel
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def clear_data(string):
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return re.sub("[^a-z' ]", "", string)
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def read_clear_data(in_file):
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print("Reading data")
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texts = []
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with open(in_file) as f:
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for line in f:
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start_period, end_period, title, symbol, text = line.rstrip('\n').split('\t')
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texts.append(text)
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print("Data read")
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return texts
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def create_ngrams(string, ngram_len=2):
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n_grams = []
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if len(string.split()) > ngram_len:
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for i in range(ngram_len, len(string.split())):
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n_gram = string.split()[i-ngram_len:i+1]
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n_grams.append(" ".join(n_gram))
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return n_grams
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return [string]
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def get_ngrams(data, ngram_len=2):
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print("Creating ngrams")
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n_grams = []
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counter = 0
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for string in data:
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n_grams.append(create_ngrams(string))
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counter += 1
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percentage = round((counter/len(data))*100, 2)
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print(f"Status: {percentage}%", end='\r')
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print("Creating one list")
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n_grams = sum(n_grams, [])
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print("Created ngrams")
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return n_grams
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def segment_data(n_grams):
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print("Segmenting data")
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source = []
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target = []
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for string in n_grams:
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# tutaj brac pod uwage jescze follow slowa
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source.append(" ".join(string.split()[:-1]))
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target.append(" ".join(string.split()[1:]))
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print("Data segmented")
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return source, target
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def create_vocab(data):
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print("Creating vocab")
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vocab = {}
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counter = 0
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for word in set(" ".join(data).split()):
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vocab[counter] = word
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counter += 1
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percentage = round((counter/len(data))*100, 2)
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print(f"Status: {percentage}%", end='\r')
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vocab = {t:i for i,t in vocab.items()}
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print("Vocab created")
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return vocab
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def segment_with_vocab(vocab, target, source):
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print("Segmenting...")
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def get_int_seq(seq):
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return [vocab[word] for word in seq.split()]
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source_int = [get_int_seq(i) for i in source]
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target_int = [get_int_seq(i) for i in target]
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source_int = np.array(source_int)
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target_int = np.array(target_int)
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print("Segmented")
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return source_int, target_int
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def get_batches(source_arr, target_arr, batch_size):
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counter = 0
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for n in range(batch_size, source_arr.shape[0], batch_size):
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x = source_arr[counter:n,:]
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y = target_arr[counter:n,:]
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counter = n
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yield x, y
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def train(net, source_int, target_int, seed, epochs=5, batch_size=32, lr=0.001, clip=1, step=30):
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optimizer = torch.optim.Adam(net.parameters(), lr=lr)
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criterion = torch.nn.CrossEntropyLoss()
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counter = 0
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print("Start training")
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torch.autograd.set_detect_anomaly(True)
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net.train()
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for epoch in range(epochs):
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hidden = net.init_hidden(batch_size)
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#import ipdb;ipdb.set_trace()
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for x,y in get_batches(source_int, target_int, batch_size):
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counter +=1
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source, target = torch.from_numpy(x), torch.from_numpy(y)
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if torch.cuda.is_available():
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source = source.cuda()
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target = target.cuda()
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#hidden = tuple([each.data for each in hidden])
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net.zero_grad()
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output, hidden = net(source, hidden)
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hidden.detach_()
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loss = criterion(output, target.view(-1))
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#if counter == 1:
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# loss.backward(retain_graph=True)
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#else:
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# loss.backward()
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loss.backward()
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torch.nn.utils.clip_grad_norm_(net.parameters(), clip)
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optimizer.step()
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if counter % step == 0:
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print(f"Epoch: {epoch}/{epochs} ; Step : {counter} ; loss : {loss}")
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if counter % 500 == 0:
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torch.save(net.state_dict(), f"checkpoint.ckpt-{counter}-epoch_{epoch}-seed_{seed}")
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument('--in_file')
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parser.add_argument('--ngram_level', default=2, help="Level of ngram")
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parser.add_argument('--ngrams', help="Path to pickle with ready bigrams")
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parser.add_argument('--vocab')
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parser.add_argument('--model')
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args = parser.parse_args()
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seed = random.randint(0, 20)
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if args.ngrams:
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print("Reading ngrams")
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with open(args.ngrams, 'rb') as f:
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source, target, data, n_grams = pickle.load(f)
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print("Ngrams read")
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else:
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data = read_clear_data(args.in_file)
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n_grams = get_ngrams(data, args.ngram_level)
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source, target = segment_data(n_grams)
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print("Saving progress...")
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with open(f"n_grams-ngram_{args.ngram_level}-seed_{seed}.pickle", 'wb+') as f:
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pickle.dump((source, target, data, n_grams), f)
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print(f"Saved: n_grams-ngram_{args.ngram_level}-seed_{seed}.pickle")
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if args.vocab:
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print("Reading vocab")
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with open(args.vocab, 'rb') as f:
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vocab, source_int, target_int = pickle.load(f)
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print("Vocab read")
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else:
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vocab = create_vocab(data)
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print(f"Vocab size: {len(vocab)}")
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source_int, target_int = segment_with_vocab(vocab, target, source)
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print("Saving progress")
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with open(f"vocab-seed_{seed}.pickle", 'wb+') as f:
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pickle.dump((vocab, source_int, target_int), f)
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print(f"Saved: vocab-seed_{seed}.pickle")
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vocab_size = len(vocab)
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net = NgramModel(vocab_size=vocab_size)
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if args.model:
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net.load_state_dict(torch.load(args.model))
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if torch.cuda.is_available():
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net.cuda()
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train(net, source_int, target_int, seed)
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main()
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