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1# Copyright 2019 The TensorFlow Authors. All Rights Reserved. 

2# 

3# Licensed under the Apache License, Version 2.0 (the "License"); 

4# you may not use this file except in compliance with the License. 

5# You may obtain a copy of the License at 

6# 

7# http://www.apache.org/licenses/LICENSE-2.0 

8# 

9# Unless required by applicable law or agreed to in writing, software 

10# distributed under the License is distributed on an "AS IS" BASIS, 

11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

12# See the License for the specific language governing permissions and 

13# limitations under the License. 

14# ============================================================================== 

15"""Additional layers for sequence to sequence models.""" 

16 

17from tensorflow_addons.seq2seq.attention_wrapper import AttentionMechanism 

18from tensorflow_addons.seq2seq.attention_wrapper import AttentionWrapper 

19from tensorflow_addons.seq2seq.attention_wrapper import AttentionWrapperState 

20from tensorflow_addons.seq2seq.attention_wrapper import BahdanauAttention 

21from tensorflow_addons.seq2seq.attention_wrapper import BahdanauMonotonicAttention 

22from tensorflow_addons.seq2seq.attention_wrapper import LuongAttention 

23from tensorflow_addons.seq2seq.attention_wrapper import LuongMonotonicAttention 

24from tensorflow_addons.seq2seq.attention_wrapper import hardmax 

25from tensorflow_addons.seq2seq.attention_wrapper import monotonic_attention 

26from tensorflow_addons.seq2seq.attention_wrapper import safe_cumprod 

27 

28from tensorflow_addons.seq2seq.basic_decoder import BasicDecoder 

29from tensorflow_addons.seq2seq.basic_decoder import BasicDecoderOutput 

30 

31from tensorflow_addons.seq2seq.beam_search_decoder import BeamSearchDecoder 

32from tensorflow_addons.seq2seq.beam_search_decoder import BeamSearchDecoderOutput 

33from tensorflow_addons.seq2seq.beam_search_decoder import BeamSearchDecoderState 

34from tensorflow_addons.seq2seq.beam_search_decoder import FinalBeamSearchDecoderOutput 

35from tensorflow_addons.seq2seq.beam_search_decoder import gather_tree 

36from tensorflow_addons.seq2seq.beam_search_decoder import gather_tree_from_array 

37from tensorflow_addons.seq2seq.beam_search_decoder import tile_batch 

38 

39from tensorflow_addons.seq2seq.decoder import BaseDecoder 

40from tensorflow_addons.seq2seq.decoder import Decoder 

41from tensorflow_addons.seq2seq.decoder import dynamic_decode 

42 

43from tensorflow_addons.seq2seq.loss import SequenceLoss 

44from tensorflow_addons.seq2seq.loss import sequence_loss 

45 

46from tensorflow_addons.seq2seq.sampler import CustomSampler 

47from tensorflow_addons.seq2seq.sampler import GreedyEmbeddingSampler 

48from tensorflow_addons.seq2seq.sampler import InferenceSampler 

49from tensorflow_addons.seq2seq.sampler import SampleEmbeddingSampler 

50from tensorflow_addons.seq2seq.sampler import Sampler 

51from tensorflow_addons.seq2seq.sampler import ScheduledEmbeddingTrainingSampler 

52from tensorflow_addons.seq2seq.sampler import ScheduledOutputTrainingSampler 

53from tensorflow_addons.seq2seq.sampler import TrainingSampler