Papers by Xiaohui Cui
Evaluating Open-Domain Dialogues in Latent Space with Next Sentence Prediction and Mutual Information (2023.acl-long)
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| Challenge: | Existing evaluation methods for open-domain dialogues are difficult due to the one-to-many issue of the open- domain dialogues. |
| Approach: | They propose a learning-based automatic evaluation metric which can robustly evaluate open-domain dialogues by augmenting CVAEs with a Next Sentence Prediction objective and employing Mutual Information to model the semantic similarity of text in the latent space. |
| Outcome: | The proposed method can evaluate open-domain dialogues on two open- domain dialogue datasets. |
Attentive Pooling with Learnable Norms for Text Representation (2020.acl-main)
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| Challenge: | Existing pooling methods that use fixed pooling norms may not be optimal for learning text representations in different tasks. |
| Approach: | They propose to learn pooling norms in an end-to-end manner to automatically find the optimal ones for text representation in different tasks. |
| Outcome: | The proposed approach improves on four benchmark datasets on a neural NLP model. |
Descriptive Prompt Paraphrasing for Target-Oriented Multimodal Sentiment Classification (2023.findings-emnlp)
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| Challenge: | Current researches mainly work on either of two types of targets in a decentralized manner. |
| Approach: | They propose a model to perform sentiment polarity on a target jointly considering its corresponding multiple modalities including text, image, and others. |
| Outcome: | The proposed model performs well on four datasets spanning the above two target types and is prompt-based language modelling. |
Misleading Relation Classifiers by Substituting Words in Texts (2023.findings-acl)
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| Challenge: | Existing methods to generate adversarial examples for relation classification are vulnerable to adversarials. |
| Approach: | They propose a method that uses most important parts of speech to substitute words with synonyms or hyponyms to generate adversarial texts of high quality. |
| Outcome: | The proposed method can generate adversarial texts of high quality and most relationships can be correctly identified in the process of human evaluation. |