Papers by Yumo Xu
Fine-Grained Natural Language Inference Based Faithfulness Evaluation for Diverse Summarisation Tasks (2024.eacl-long)
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| Challenge: | Existing approaches to evaluate summary faithfulness are sub-optimal due to the granularity level considered for premises and hypotheses. |
| Approach: | They propose a novel approach that uses a variable premise size and simplifies summary sentences into shorter hypotheses. |
| Outcome: | The proposed model performs better on diverse summarisation tasks than existing models. |
Document Summarization with Latent Queries (2022.tacl-1)
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| Challenge: | Existing benchmarks for query-focused summarization are small for training large neural models. |
| Approach: | They propose a unified modeling framework for query-focused summarization . they model queries as discrete latent variables over document tokens . |
| Outcome: | The proposed framework outperforms strong comparison systems across benchmarks, query types, document settings, and target domains. |
Stock Movement Prediction from Tweets and Historical Prices (P18-1)
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| Challenge: | a novel deep generative model exploits text and price signals to make stochastic stock movement predictions. |
| Approach: | They propose a deep generative model exploiting text and price signals to solve this problem. |
| Outcome: | The proposed model exploits text and price signals to make temporally-dependent predictions from chaotic data. |
RAG-QA Arena: Evaluating Domain Robustness for Long-form Retrieval Augmented Question Answering (2024.emnlp-main)
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Rujun Han, Yuhao Zhang, Peng Qi, Yumo Xu, Jenyuan Wang, Lan Liu, William Yang Wang, Bonan Min, Vittorio Castelli
| Challenge: | Existing datasets for question answering based on retrieval augmented generation (RAG-QA) are either constructed using a single source corpus or consist of short extractive answers, which fall short of evaluating large language model (LLM) based RAG-QA systems on cross-domain generalization. |
| Approach: | They propose a dataset that integrates short extractive answers from multiple documents into a single coherent narrative. |
| Outcome: | The proposed dataset integrates short extractive answers from multiple documents into a single coherent narrative, covering 26K queries and large corpora across seven different domains. |
Bootstrapping a Crosslingual Semantic Parser (2020.findings-emnlp)
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| Challenge: | Recent advances in semantic parsing are limited to English but professional translation can be prohibitively expensive. |
| Approach: | They adapt a semantic parser trained on a single language to new languages and multiple domains with minimal annotation. |
| Outcome: | The proposed approach achieves parsing accuracy within 2% of translation using only 50% of training data. |
Dancing in Chains: Reconciling Instruction Following and Faithfulness in Language Models (2024.emnlp-main)
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Zhengxuan Wu, Yuhao Zhang, Peng Qi, Yumo Xu, Rujun Han, Yian Zhang, Jifan Chen, Bonan Min, Zhiheng Huang
| Challenge: | Modern language models fail to follow human instructions while being faithful . a trade-off exists between instruction following and faithfulness when training LMs . |
| Approach: | They propose a method that relies on Reject-sampling by Self-instruct with Continued Fine-tuning to train LMs to follow human instructions while being faithful. |
| Outcome: | The proposed method outperforms vanilla MTL with high-quality data, but with significantly smaller data. |
Abstractive Summarizers are Excellent Extractive Summarizers (2023.acl-short)
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| Challenge: | Abstractive summarization systems have traditionally been fragmented, limiting the benefits of compatible models. |
| Approach: | They propose three new inference algorithms using sequence-to-sequence architectures to model extractive summarization with an abstractive summmarization system. |
| Outcome: | The proposed algorithms outperform existing models on CNN and Dailymail and show that they are more efficient than existing models. |
QTSumm: Query-Focused Summarization over Tabular Data (2023.emnlp-main)
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Yilun Zhao, Zhenting Qi, Linyong Nan, Boyu Mi, Yixin Liu, Weijin Zou, Simeng Han, Ruizhe Chen, Xiangru Tang, Yumo Xu, Dragomir Radev, Arman Cohan
| Challenge: | Existing text generation systems that can provide accurate table summaries can facilitate more efficient access to relevant data insights. |
| Approach: | They propose a query-focused task where text generation models have to perform human-like reasoning and analysis over the given table to generate a tailored table summary. |
| Outcome: | The proposed method improves existing baselines on table-to-text generation and large language models by concatenating generated facts to the model input. |
Coarse-to-Fine Query Focused Multi-Document Summarization (2020.emnlp-main)
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| Challenge: | Existing work on query focused multi-document summarization relies heavily on retrieval-style methods. |
| Approach: | They propose a query-cluster-based model which uses more accurate modules for estimating whether text segments are relevant, likely to contain an answer, and central. |
| Outcome: | The proposed framework outperforms strong comparison systems on benchmark datasets across domains and query types. |
CiteEval: Principle-Driven Citation Evaluation for Source Attribution (2025.acl-long)
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Yumo Xu, Peng Qi, Jifan Chen, Kunlun Liu, Rujun Han, Lan Liu, Bonan Min, Vittorio Castelli, Arshit Gupta, Zhiguo Wang
| Challenge: | Current evaluation frameworks rely on NLI to assess binary or ternary support from cited sources, which is suboptimal for citation evaluation. |
| Approach: | They propose a citation evaluation framework based on fine-grained citation ratings within a broad context and construct a multi-domain benchmark with high-quality human annotations. |
| Outcome: | The proposed framework provides a high-quality human annotation benchmark and a suite of model-based metrics that exhibit strong correlation with human judgments. |
Generating Query Focused Summaries from Query-Free Resources (2021.acl-long)
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| Challenge: | Existing datasets are small for data-hungry neural architectures and are limited to evaluation purposes. |
| Approach: | They propose to decompose QFS into query modeling and conditional language modeling . they propose a Masked ROUGE Regression framework for evidence estimation and ranking . |
| Outcome: | The proposed model achieves state-of-the-art performance despite weak supervision. |