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Attention-Based Bidirectional Long Short-Term Memory Networks for Relation Classification

Tensorflow Implementation of Deep Learning Approach for Relation Extraction Challenge(SemEval-2010 Task #8: Multi-Way Classification of Semantic Relations Between Pairs of Nominals) via Attention-based BiLSTM.

Usage

Train

• Train data is located in "<U>SemEval2010_task8_all_data/SemEval2010_task8_training/TRAIN_FILE.TXT</U>".
• "glove.6B.100d" is used as pre-trained glove model.
• Performance (accuracy and f1-socre) outputs during training are NOT OFFICIAL SCORE of SemEval 2010 Task 8. To compute the official performance, you should proceed the follow Evaluation step with checkpoints obtained by training.

Display help message:

$ python train.py --help

Train Example:

$ python train.py --embedding_path "glove.6B.100d.txt"

Evaluation

• You can get an OFFICIAL SCORE of SemEval 2010 Task 8 for test data by following this step. README describes how to evaluate the official score.
• Test data is located in "<U>SemEval2010_task8_all_data/SemEval2010_task8_testing_keys/TEST_FILE_FULL.TXT</U>".
• MUST GIVE --checkpoint_dir ARGUMENT, checkpoint directory from training run, like below example.

Evaluation Example:

$ python eval.py --checkpoint_dir "runs/1523902663/checkpoints/"

SemEval-2010 Task #8

• Given: a pair of nominals
• Goal: recognize the semantic relation between these nominals.
• Example:
  • "There were apples, <U>pears</U> and oranges in the <U>bowl</U>." <br> → CONTENT-CONTAINER(pears, bowl)
  • “The cup contained <U>tea</U> from dried <U>ginseng</U>.” <br> → ENTITY-ORIGIN(tea, ginseng)

The Inventory of Semantic Relations

1. Cause-Effect(CE): An event or object leads to an effect(those cancers were caused by radiation exposures)
2. Instrument-Agency(IA): An agent uses an instrument(phone operator)
3. Product-Producer(PP): A producer causes a product to exist (a factory manufactures suits)
4. Content-Container(CC): An object is physically stored in a delineated area of space (a bottle full of honey was weighed) Hendrickx, Kim, Kozareva, Nakov, O S´ eaghdha, Pad ´ o,´ Pennacchiotti, Romano, Szpakowicz Task Overview Data Creation Competition Results and Discussion The Inventory of Semantic Relations (III)
5. Entity-Origin(EO): An entity is coming or is derived from an origin, e.g., position or material (letters from foreign countries)
6. Entity-Destination(ED): An entity is moving towards a destination (the boy went to bed)
7. Component-Whole(CW): An object is a component of a larger whole (my apartment has a large kitchen)
8. Member-Collection(MC): A member forms a nonfunctional part of a collection (there are many trees in the forest)
9. Message-Topic(CT): An act of communication, written or spoken, is about a topic (the lecture was about semantics)
10. OTHER: If none of the above nine relations appears to be suitable.

Distribution for Dataset

• SemEval-2010 Task #8 Dataset [Download]

  Relation	Train Data	Test Data	Total Data
  Cause-Effect	1,003 (12.54%)	328 (12.07%)	1331 (12.42%)
  Instrument-Agency	504 (6.30%)	156 (5.74%)	660 (6.16%)
  Product-Producer	717 (8.96%)	231 (8.50%)	948 (8.85%)
  Content-Container	540 (6.75%)	192 (7.07%)	732 (6.83%)
  Entity-Origin	716 (8.95%)	258 (9.50%)	974 (9.09%)
  Entity-Destination	845 (10.56%)	292 (10.75%)	1137 (10.61%)
  Component-Whole	941 (11.76%)	312 (11.48%)	1253 (11.69%)
  Member-Collection	690 (8.63%)	233 (8.58%)	923 (8.61%)
  Message-Topic	634 (7.92%)	261 (9.61%)	895 (8.35%)
  Other	1,410 (17.63%)	454 (16.71%)	1864 (17.39%)
  Total	8,000 (100.00%)	2,717 (100.00%)	10,717 (100.00%)

Reference

• Attention-Based Bidirectional Long Short-Term Memory Networks for Relation Classification (ACL 2016), P Zhou et al. [paper]
• roomylee's cnn-relation-extraction repository [github]