Evaluating Methods for Extraction of Aspect Terms in Opinion Texts in Portuguese - the Challenges of Implicit Aspects (2022.lrec-1)
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| Challenge: | In aspect-based sentiment analysis, the implicit mention of aspects is difficult to identify and may require world knowledge to do so. |
| Approach: | They evaluate frequency-based, hybrid, and machine learning methods to extract aspect terms from opinionated texts in Portuguese. |
| Outcome: | The proposed methods show that they are more efficient and more efficient than previous methods. |
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