Papers by Wei-Nan Zhang
A Self-verified Method for Exploring Simile Knowledge from Pre-trained Language Models (2024.lrec-main)
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| Challenge: | Pre-trained language models (PLMs) have succeeded in natural language processing because they learn generic knowledge from a large corpus. |
| Approach: | They propose a method that allows pre-trained language models to explore simile knowledge from PLMs . they enhance PLM models with a multi-level simile recognition task that evaluates similes aplenty . |
| Outcome: | The proposed method can explore more accurate simile knowledge for PLMs. |
Retrieval-Enhanced Adversarial Training for Neural Response Generation (P19-1)
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| Challenge: | Existing approaches to dialogue systems are labor-intensive and difficult to scale up. |
| Approach: | They propose a Retrieval-Enhanced Adversarial Training method for neural response generation that leverages an adversarial training paradigm while taking advantage of N-best response candidates from a retrieval-based system to construct the discriminator. |
| Outcome: | The proposed method outperforms the vanilla Seq2Seq model and conventional adversarial training approach on a large scale dataset. |
BoB: BERT Over BERT for Training Persona-based Dialogue Models from Limited Personalized Data (2021.acl-long)
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| Challenge: | Existing persona-based dialogue models use crowd-sourced data, such as the PersonaChat . however, the cost of such datasets is limited, and the model is not robust. |
| Approach: | They propose to disentangle persona-based dialogue generation into two sub-tasks by using a BERT-over-BERT model. |
| Outcome: | The proposed model outperforms baselines in response quality and persona consistency under different limited data settings. |
What Did You Refer to? Evaluating Co-References in Dialogue (2021.findings-acl)
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| Challenge: | Existing neural end-to-end dialogue models have limitations on exactly interpreting the linguistic structures in dialogue history context. |
| Approach: | They propose to directly measure the capability of neural end-to-end dialogue models on understanding the entity-oriented structures via question answering. |
| Outcome: | The proposed model can understand large-scale English and Chinese human human dialogues using a large-format dataset. |
Profile Consistency Identification for Open-domain Dialogue Agents (2020.emnlp-main)
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| Challenge: | Existing studies on improving attribute consistency focus on incorporating attribute information in responses, but few efforts have identified the consistency relations between response and attribute profile. |
| Approach: | They propose a key-value structure information enriched BERT model to identify the profile consistency . they propose to incorporate attribute information into the generated responses . |
| Outcome: | The proposed model improves over strong baselines on downstream tasks. |
Generate, Delete and Rewrite: A Three-Stage Framework for Improving Persona Consistency of Dialogue Generation (2020.acl-main)
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| Challenge: | Existing persona-based dialogue models generate human-like responses but can hardly avoid the generation of inconsistent persona words. |
| Approach: | They propose a framework that deletes inconsistent words from a generated response prototype and further rewrites it to a personality-consistent one. |
| Outcome: | The proposed framework achieves good performance on the persona-chat dataset. |
Counterfactual Off-Policy Training for Neural Dialogue Generation (2020.emnlp-main)
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| Challenge: | Existing models for open-domain dialogue generation suffer from data insufficiency . a potential response inferred in hindsight is called a counterfactual reasoning . |
| Approach: | They propose to explore potential responses by counterfactual reasoning . given an observed response, the model automatically infers the outcome of an alternative policy that could have been taken . |
| Outcome: | The proposed model outperforms the HRED model and conventional learning frameworks on the DailyDialog dataset. |
Neural Stylistic Response Generation with Disentangled Latent Variables (2021.acl-long)
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| Challenge: | Existing parallel datasets for creating stylistic responses are not stylistically consistent. |
| Approach: | They propose to disentangle the content and style in latent space by diluting sentence-level information in style representations. |
| Outcome: | The proposed approach achieves a higher BERT-based style intensity score and comparable BLEU scores, compared with baselines. |
Deep Reinforcement Learning for Chinese Zero Pronoun Resolution (P18-1)
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| Challenge: | Recent models for zero pronoun resolution in Chinese are short-sighted and do not capture semantic information for zeros and candidate antecedents. |
| Approach: | They propose to integrate a deep reinforcement learning approach to Chinese zero pronoun resolution. |
| Outcome: | The proposed approach outperforms the state-of-the-art methods in three experimental settings. |
A Compare Aggregate Transformer for Understanding Document-grounded Dialogue (2020.findings-emnlp)
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| Challenge: | Existing studies have focused on KS in unstructured documents, but dialogue history that is not related to the current dialogue may introduce noise in the KS processing. |
| Approach: | They propose a Compare Aggregate Transformer to jointly denoise the dialogue context and aggregate the document information for response generation. |
| Outcome: | The proposed model outperforms the state-of-the-art approach and strong baselines on a CMU_DoG dataset. |
I run as fast as a rabbit, can you? A Multilingual Simile Dialogues Datasets (2023.findings-acl)
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| Challenge: | A simile is a figure of speech that compares two different things via shared properties. |
| Approach: | They propose a multilingual simile dialogue dataset that can be used to study similes in real-life scenarios. |
| Outcome: | The proposed dataset is the largest manually annotated simile dataset and contains both English and Chinese data. |