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ENH Created an abstract layer for sequence models, and separated it f…
…rom the tagger.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| // Copyright (c) 2012-2013 Andre Martins | ||
| // All Rights Reserved. | ||
| // | ||
| // This file is part of TurboParser 2.1. | ||
| // | ||
| // TurboParser 2.1 is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // TurboParser 2.1 is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with TurboParser 2.1. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
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| #include "SequenceDictionary.h" | ||
| #include "SequencePipe.h" | ||
| #include <algorithm> | ||
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| void SequenceDictionary::CreateTagDictionary(SequenceReader *reader) { | ||
| LOG(INFO) << "Creating tag dictionary..."; | ||
| vector<int> tag_freqs; | ||
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| // Go through the corpus and build the label dictionary, | ||
| // counting the frequencies. | ||
| reader->Open(pipe_->GetOptions()->GetTrainingFilePath()); | ||
| SequenceInstance *instance = | ||
| static_cast<SequenceInstance*>(reader->GetNext()); | ||
| while (instance != NULL) { | ||
| int instance_length = instance->size(); | ||
| for (int i = 0; i < instance_length; ++i) { | ||
| int id; | ||
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| // Add tag to alphabet. | ||
| id = tag_alphabet_.Insert(instance->GetTag(i)); | ||
| if (id >= tag_freqs.size()) { | ||
| CHECK_EQ(id, tag_freqs.size()); | ||
| tag_freqs.push_back(0); | ||
| } | ||
| ++tag_freqs[id]; | ||
| } | ||
| delete instance; | ||
| instance = static_cast<SequenceInstance*>(reader->GetNext()); | ||
| } | ||
| reader->Close(); | ||
| tag_alphabet_.StopGrowth(); | ||
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| LOG(INFO) << "Number of tags: " << tag_alphabet_.size(); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| // Copyright (c) 2012-2013 Andre Martins | ||
| // All Rights Reserved. | ||
| // | ||
| // This file is part of TurboParser 2.1. | ||
| // | ||
| // TurboParser 2.1 is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // TurboParser 2.1 is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with TurboParser 2.1. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
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| #ifndef SEQUENCEDICTIONARY_H_ | ||
| #define SEQUENCEDICTIONARY_H_ | ||
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| #include "Dictionary.h" | ||
| #include "TokenDictionary.h" | ||
| #include "SerializationUtils.h" | ||
|
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| class Pipe; | ||
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| class SequenceDictionary : public Dictionary { | ||
| public: | ||
| SequenceDictionary() {} | ||
| SequenceDictionary(Pipe* pipe) : pipe_(pipe) {} | ||
| virtual ~SequenceDictionary() { Clear(); } | ||
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| virtual void Clear() { | ||
| // Don't clear token_dictionary, since this class does not own it. | ||
| tag_alphabet_.clear(); | ||
| } | ||
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| virtual void Save(FILE *fs) { | ||
| if (0 > tag_alphabet_.Save(fs)) CHECK(false); | ||
| } | ||
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| void Load(FILE *fs) { | ||
| if (0 > tag_alphabet_.Load(fs)) CHECK(false); | ||
| tag_alphabet_.BuildNames(); | ||
| } | ||
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| void AllowGrowth() { token_dictionary_->AllowGrowth(); } | ||
| void StopGrowth() { token_dictionary_->StopGrowth(); } | ||
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| virtual void CreateTagDictionary(SequenceReader *reader); | ||
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| void BuildTagNames() { | ||
| tag_alphabet_.BuildNames(); | ||
| } | ||
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| const string &GetTagName(int tag) const { | ||
| return tag_alphabet_.GetName(tag); | ||
| } | ||
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| int GetBigramLabel(int left_tag, int tag) { | ||
| CHECK_GE(left_tag, -1); | ||
| CHECK_GE(tag, -1); | ||
| //return (left_tag * tag_alphabet_.size() + tag); | ||
| return ((1 + left_tag) * (1 + tag_alphabet_.size()) + (1 + tag)); | ||
| } | ||
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| int GetTrigramLabel(int left_left_tag, int left_tag, int tag) { | ||
| CHECK_GE(left_left_tag, -1); | ||
| CHECK_GE(left_tag, -1); | ||
| CHECK_GE(tag, -1); | ||
| //return (left_tag * left_tag * tag_alphabet_.size() + | ||
| // left_tag * tag_alphabet_.size() + tag); | ||
| return ((1 + left_left_tag) * (1 + tag_alphabet_.size()) * | ||
| (1 + tag_alphabet_.size()) + | ||
| (1 + left_tag) * (1 + tag_alphabet_.size()) + (1 + tag)); | ||
| } | ||
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| TokenDictionary *GetTokenDictionary() const { return token_dictionary_; } | ||
| void SetTokenDictionary(TokenDictionary *token_dictionary) { | ||
| token_dictionary_ = token_dictionary; | ||
| } | ||
|
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| const Alphabet &GetTagAlphabet() const { return tag_alphabet_; }; | ||
|
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| protected: | ||
| Pipe *pipe_; | ||
| TokenDictionary *token_dictionary_; | ||
| Alphabet tag_alphabet_; | ||
| }; | ||
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| #endif /* SEQUENCEDICTIONARY_H_ */ |
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