提交 795f572f 编写于 作者: W wanghaoshuang

Rename 'seq_error' to 'instance_error'

上级 87d90d2a
......@@ -22,6 +22,7 @@ from layer_helper import LayerHelper
__all__ = [
'Accuracy',
'ChunkEvaluator',
'EditDistance',
]
......@@ -211,7 +212,7 @@ class ChunkEvaluator(Evaluator):
class EditDistance(Evaluator):
"""
Accumulate edit distance sum and sequence number from mini-batches and
compute the average edit_distance of all batches.
compute the average edit_distance and instance error of all batches.
Args:
input: the sequences predicted by network.
......@@ -228,11 +229,11 @@ class EditDistance(Evaluator):
distance_evaluator.reset(exe)
for data in batches:
loss = exe.run(fetch_list=[cost])
distance, sequence_error = distance_evaluator.eval(exe)
distance, instance_error = distance_evaluator.eval(exe)
In the above example:
'distance' is the average of the edit distance rate in a pass.
'sequence_error' is the sequence error rate in a pass.
'instance_error' is the instance error rate in a pass.
"""
......@@ -246,8 +247,8 @@ class EditDistance(Evaluator):
dtype='float32', shape=[1], suffix='total_distance')
self.seq_num = self.create_state(
dtype='int64', shape=[1], suffix='seq_num')
self.seq_error = self.create_state(
dtype='int64', shape=[1], suffix='seq_error')
self.instance_error = self.create_state(
dtype='int64', shape=[1], suffix='instance_error')
distances, seq_num = layers.edit_distance(
input=input, label=label, ignored_tokens=ignored_tokens)
......@@ -255,15 +256,18 @@ class EditDistance(Evaluator):
compare_result = layers.equal(distances, zero)
compare_result_int = layers.cast(x=compare_result, dtype='int')
seq_right_count = layers.reduce_sum(compare_result_int)
seq_error_count = layers.elementwise_sub(x=seq_num, y=seq_right_count)
instance_error_count = layers.elementwise_sub(
x=seq_num, y=seq_right_count)
total_distance = layers.reduce_sum(distances)
layers.sums(
input=[self.total_distance, total_distance],
out=self.total_distance)
layers.sums(input=[self.seq_num, seq_num], out=self.seq_num)
layers.sums(input=[self.seq_error, seq_error_count], out=self.seq_error)
layers.sums(
input=[self.instance_error, instance_error_count],
out=self.instance_error)
self.metrics.append(total_distance)
self.metrics.append(seq_error_count)
self.metrics.append(instance_error_count)
def eval(self, executor, eval_program=None):
if eval_program is None:
......@@ -272,11 +276,12 @@ class EditDistance(Evaluator):
with program_guard(main_program=eval_program):
total_distance = _clone_var_(block, self.total_distance)
seq_num = _clone_var_(block, self.seq_num)
seq_error = _clone_var_(block, self.seq_error)
instance_error = _clone_var_(block, self.instance_error)
seq_num = layers.cast(x=seq_num, dtype='float32')
seq_error = layers.cast(x=seq_error, dtype='float32')
instance_error = layers.cast(x=instance_error, dtype='float32')
avg_distance = layers.elementwise_div(x=total_distance, y=seq_num)
avg_seq_error = layers.elementwise_div(x=seq_error, y=seq_num)
result = executor.run(eval_program,
fetch_list=[avg_distance, avg_seq_error])
avg_instance_error = layers.elementwise_div(
x=instance_error, y=seq_num)
result = executor.run(
eval_program, fetch_list=[avg_distance, avg_instance_error])
return np.array(result[0]), np.array(result[1])
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