Review highlights: opinion mining on reviews: a hybrid model for rule selection in aspect extraction

This paper proposes a methodology to extract key insights from user generated reviews. This work is based on Aspect Based Sentiment Analysis (ABSA) which predicts the sentiment of aspects mentioned in the text documents... The extracted aspects are fine-grained for the presentation form known as Review Highlights. The syntactic approach for extraction process suffers from the overlapping chunking rules which result in noise extraction. We introduce a hybrid technique which combines machine learning and rule based model. A multi-label classifier identifies the effective rules which efficiently parse aspects and opinions from texts. This selection of rules reduce the amount of noise in extraction tasks. This is a novel attempt to learn syntactic rule fitness from a corpus using machine learning for accurate aspect extraction. As the model learns the syntactic rule prediction from the corpus, it makes the extraction method domain independent. It also allows studying the quality of syntactic rules in a different corpus. read more

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Task Dataset Model Metric Name Metric Value Global Rank Benchmark
Extract aspect-polarity tuple SemEval 2015 Task 12 Syntactic Grammer Model F1 score 0.51 # 1
Extract Aspect SemEval 2015 Task 12 Syntactic Grammar Model F1 score 0.63 # 2
Extract Aspect SemEval 2015 Task 12 EliXa F1 score 0.70 # 1


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