Add distributed label semantic role book chapter

python/paddle/v2/fluid/tests/book_distribute/test_dist_label_semantic_roles.py

+import math
+
+import numpy as np
+import paddle.v2 as paddle
+import paddle.v2.dataset.conll05 as conll05
+import paddle.v2.fluid as fluid
+import time
+import os
+
+word_dict, verb_dict, label_dict = conll05.get_dict()
+word_dict_len = len(word_dict)
+label_dict_len = len(label_dict)
+pred_len = len(verb_dict)
+
+mark_dict_len = 2
+word_dim = 32
+mark_dim = 5
+hidden_dim = 512
+depth = 8
+mix_hidden_lr = 1e-3
+
+IS_SPARSE = True
+PASS_NUM = 10
+BATCH_SIZE = 20
+
+embedding_name = 'emb'
+
+
+def load_parameter(file_name, h, w):
+    with open(file_name, 'rb') as f:
+        f.read(16)  # skip header.
+        return np.fromfile(f, dtype=np.float32).reshape(h, w)
+
+
+def db_lstm(word, predicate, ctx_n2, ctx_n1, ctx_0, ctx_p1, ctx_p2, mark,
+            **ignored):
+    # 8 features
+    predicate_embedding = fluid.layers.embedding(
+        input=predicate,
+        size=[pred_len, word_dim],
+        dtype='float32',
+        is_sparse=IS_SPARSE,
+        param_attr='vemb')
+
+    mark_embedding = fluid.layers.embedding(
+        input=mark,
+        size=[mark_dict_len, mark_dim],
+        dtype='float32',
+        is_sparse=IS_SPARSE)
+
+    word_input = [word, ctx_n2, ctx_n1, ctx_0, ctx_p1, ctx_p2]
+    emb_layers = [
+        fluid.layers.embedding(
+            size=[word_dict_len, word_dim],
+            input=x,
+            param_attr=fluid.ParamAttr(
+                name=embedding_name, trainable=False)) for x in word_input
+    ]
+    emb_layers.append(predicate_embedding)
+    emb_layers.append(mark_embedding)
+
+    hidden_0_layers = [
+        fluid.layers.fc(input=emb, size=hidden_dim) for emb in emb_layers
+    ]
+
+    hidden_0 = fluid.layers.sums(input=hidden_0_layers)
+
+    lstm_0 = fluid.layers.dynamic_lstm(
+        input=hidden_0,
+        size=hidden_dim,
+        candidate_activation='relu',
+        gate_activation='sigmoid',
+        cell_activation='sigmoid')
+
+    # stack L-LSTM and R-LSTM with direct edges
+    input_tmp = [hidden_0, lstm_0]
+
+    for i in range(1, depth):
+        mix_hidden = fluid.layers.sums(input=[
+            fluid.layers.fc(input=input_tmp[0], size=hidden_dim),
+            fluid.layers.fc(input=input_tmp[1], size=hidden_dim)
+        ])
+
+        lstm = fluid.layers.dynamic_lstm(
+            input=mix_hidden,
+            size=hidden_dim,
+            candidate_activation='relu',
+            gate_activation='sigmoid',
+            cell_activation='sigmoid',
+            is_reverse=((i % 2) == 1))
+
+        input_tmp = [mix_hidden, lstm]
+
+    feature_out = fluid.layers.sums(input=[
+        fluid.layers.fc(input=input_tmp[0], size=label_dict_len),
+        fluid.layers.fc(input=input_tmp[1], size=label_dict_len)
+    ])
+
+    return feature_out
+
+
+def to_lodtensor(data, place):
+    seq_lens = [len(seq) for seq in data]
+    cur_len = 0
+    lod = [cur_len]
+    for l in seq_lens:
+        cur_len += l
+        lod.append(cur_len)
+    flattened_data = np.concatenate(data, axis=0).astype("int64")
+    flattened_data = flattened_data.reshape([len(flattened_data), 1])
+    res = fluid.LoDTensor()
+    res.set(flattened_data, place)
+    res.set_lod([lod])
+    return res
+
+
+def main():
+    # define network topology
+    word = fluid.layers.data(
+        name='word_data', shape=[1], dtype='int64', lod_level=1)
+    predicate = fluid.layers.data(
+        name='verb_data', shape=[1], dtype='int64', lod_level=1)
+    ctx_n2 = fluid.layers.data(
+        name='ctx_n2_data', shape=[1], dtype='int64', lod_level=1)
+    ctx_n1 = fluid.layers.data(
+        name='ctx_n1_data', shape=[1], dtype='int64', lod_level=1)
+    ctx_0 = fluid.layers.data(
+        name='ctx_0_data', shape=[1], dtype='int64', lod_level=1)
+    ctx_p1 = fluid.layers.data(
+        name='ctx_p1_data', shape=[1], dtype='int64', lod_level=1)
+    ctx_p2 = fluid.layers.data(
+        name='ctx_p2_data', shape=[1], dtype='int64', lod_level=1)
+    mark = fluid.layers.data(
+        name='mark_data', shape=[1], dtype='int64', lod_level=1)
+    feature_out = db_lstm(**locals())
+    target = fluid.layers.data(
+        name='target', shape=[1], dtype='int64', lod_level=1)
+    crf_cost = fluid.layers.linear_chain_crf(
+        input=feature_out,
+        label=target,
+        param_attr=fluid.ParamAttr(
+            name='crfw', learning_rate=mix_hidden_lr))
+    avg_cost = fluid.layers.mean(x=crf_cost)
+
+    # TODO(qiao)
+    # check other optimizers and check why out will be NAN
+    sgd_optimizer = fluid.optimizer.SGD(learning_rate=0.0001)
+    optimize_ops, params_grads = sgd_optimizer.minimize(avg_cost)
+
+    # TODO(qiao)
+    # add dependency track and move this config before optimizer
+    crf_decode = fluid.layers.crf_decoding(
+        input=feature_out, param_attr=fluid.ParamAttr(name='crfw'))
+
+    chunk_evaluator = fluid.evaluator.ChunkEvaluator(
+        input=crf_decode,
+        label=target,
+        chunk_scheme="IOB",
+        num_chunk_types=int(math.ceil((label_dict_len - 1) / 2.0)))
+
+    train_data = paddle.batch(
+        paddle.reader.shuffle(
+            paddle.dataset.conll05.test(), buf_size=8192),
+        batch_size=BATCH_SIZE)
+    place = fluid.CPUPlace()
+    feeder = fluid.DataFeeder(
+        feed_list=[
+            word, ctx_n2, ctx_n1, ctx_0, ctx_p1, ctx_p2, predicate, mark, target
+        ],
+        place=place)
+    exe = fluid.Executor(place)
+
+    t = fluid.DistributeTranspiler()
+    pserver_endpoints = os.getenv("PSERVERS")
+    # server endpoint for current node
+    current_endpoint = os.getenv("SERVER_ENDPOINT")
+    # run as trainer or parameter server
+    training_role = os.getenv(
+        "TRAINING_ROLE", "TRAINER")  # get the training role: trainer/pserver
+    t.transpile(
+        optimize_ops, params_grads, pservers=pserver_endpoints, trainers=2)
+
+    if training_role == "PSERVER":
+        if not current_endpoint:
+            print("need env SERVER_ENDPOINT")
+            exit(1)
+        pserver_prog = t.get_pserver_program(current_endpoint, optimize_ops)
+        exe.run(fluid.default_startup_program())
+        exe.run(pserver_prog)
+    elif training_role == "TRAINER":
+        trainer_prog = t.get_trainer_program()
+        start_time = time.time()
+        batch_id = 0
+        exe.run(fluid.default_startup_program())
+        embedding_param = fluid.global_scope().find_var(
+            embedding_name).get_tensor()
+        embedding_param.set(
+            load_parameter(conll05.get_embedding(), word_dict_len, word_dim),
+            place)
+        for pass_id in xrange(PASS_NUM):
+            chunk_evaluator.reset(exe)
+            for data in train_data():
+                cost, precision, recall, f1_score = exe.run(
+                    trainer_prog,
+                    feed=feeder.feed(data),
+                    fetch_list=[avg_cost] + chunk_evaluator.metrics)
+                pass_precision, pass_recall, pass_f1_score = chunk_evaluator.eval(
+                    exe)
+
+                if batch_id % 10 == 0:
+                    print("avg_cost:" + str(cost) + " precision:" + str(
+                        precision) + " recall:" + str(recall) + " f1_score:" +
+                          str(f1_score) + " pass_precision:" + str(
+                              pass_precision) + " pass_recall:" + str(
+                                  pass_recall) + " pass_f1_score:" + str(
+                                      pass_f1_score))
+                    if batch_id != 0:
+                        print("second per batch: " + str((time.time(
+                        ) - start_time) / batch_id))
+
+                batch_id = batch_id + 1
+
+
+if __name__ == '__main__':
+    main()