Xin Wu
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2026
PaCoRe: Learning to Scale Test-Time Compute with Parallel Coordinated Reasoning
Jingcheng Hu | Yinmin Zhang | Shijie Shang | Xiaobo Yang | Yue Peng | Zhewei Huang | Hebin Zhou | Xin Wu | Jie Cheng | Fanqi Wan | Xiangwen Kong | Chengyuan Yao | Kaiwen Yan | Ailin Huang | Hongyu Zhou | Qi Han | Zheng Ge | Xiangyu Zhang | Heung-Yeung Shum
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Jingcheng Hu | Yinmin Zhang | Shijie Shang | Xiaobo Yang | Yue Peng | Zhewei Huang | Hebin Zhou | Xin Wu | Jie Cheng | Fanqi Wan | Xiangwen Kong | Chengyuan Yao | Kaiwen Yan | Ailin Huang | Hongyu Zhou | Qi Han | Zheng Ge | Xiangyu Zhang | Heung-Yeung Shum
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
We introduce Parallel Coordinated Reasoning (PaCoRe), a training-and-inference framework designed to overcome a central limitation of contemporary language models: their inability to scale test-time compute (TTC) far beyond sequential reasoning under a fixed context window. PaCoRe departs from the traditional sequential paradigm by driving TTC through massive parallel exploration coordinated via a message-passing architecture in multiple rounds. Each round launches many parallel reasoning trajectories, compacts their findings into context-bounded messages, and synthesizes these messages to guide the next round and ultimately produce the final answer. Trained end-to-end with large-scale, outcome-based reinforcement learning, the model masters the synthesis abilities required by PaCoRe and scales to multi-million-token effective TTC without exceeding context limits. The approach yields strong improvements across diverse domains and notably pushes reasoning beyond frontier systems in mathematics: an 8B model reaches 94.5% on HMMT 2025, surpassing GPT-5’s 93.2% by scaling effective TTC to roughly two million tokens. We open-source model checkpoints, training data, and the full inference pipeline to accelerate follow-up work.
2024
Abstract-level Deductive Reasoning for Pre-trained Language Models
Xin Wu | Yi Cai | Ho-fung Leung
Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024)
Xin Wu | Yi Cai | Ho-fung Leung
Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024)
Pre-trained Language Models have been shown to be able to emulate deductive reasoning in natural language. However, PLMs are easily affected by irrelevant information (e.g., entity) in instance-level proofs when learning deductive reasoning. To address this limitation, we propose an Abstract-level Deductive Reasoner (ADR). ADR is trained to predict the abstract reasoning proof of each sample, which guides PLMs to learn general reasoning patterns rather than instance-level knowledge. Experimental results demonstrate that ADR significantly reduces the impact of PLMs learning instance-level knowledge (over 70%).
Step Feasibility-Aware and Error-Correctable Entailment Tree Generation
Junyue Song | Xin Wu | Yi Cai
Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024)
Junyue Song | Xin Wu | Yi Cai
Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024)
An entailment tree is a structured reasoning path that clearly demonstrates the process of deriving hypotheses through multiple steps of inference from known premises. It enhances the interpretability of QA systems. Existing methods for generating entailment trees typically employ iterative frameworks to ensure reasoning faithfulness. However, they often suffer from the issue of false feasible steps, where selected steps appear feasible but actually lead to incorrect intermediate conclusions. Moreover, the existing iterative frameworks do not consider error-prone search branches, resulting in error propagation. In this work, we propose SPEH: an iterative entailment tree generation framework with Step feasibility Perception and state Error Handling mechanisms. Step Feasibility Perception enables the model to learn how to choose steps that are not false feasible. State Error Handling includes error detection and backtracking, allowing the model to correct errors when entering incorrect search branches. Experimental results demonstrate the effectiveness of our approach in improving the generation of entailment trees.
2023
CLEVR-Implicit: A Diagnostic Dataset for Implicit Reasoning in Referring Expression Comprehension
Jingwei Zhang | Xin Wu | Yi Cai
Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing
Jingwei Zhang | Xin Wu | Yi Cai
Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing
Recently, pre-trained vision-language (VL) models have achieved remarkable success in various cross-modal tasks, including referring expression comprehension (REC). These models are pre-trained on the large-scale image-text pairs to learn the alignment between words in textual descriptions and objects in the corresponding images and then fine-tuned on downstream tasks. However, the performance of VL models is hindered when dealing with implicit text, which describes objects through comparisons between two or more objects rather than explicitly mentioning them. This is because the models struggle to align the implicit text with the objects in the images. To address the challenge, we introduce CLEVR-Implicit, a dataset consisting of synthetic images and corresponding two types of implicit text for the REC task. Additionally, to enhance the performance of VL models on implicit text, we propose a method called Transforming Implicit text into Explicit text (TIE), which enables VL models to reason with the implicit text. TIE consists of two modules: (1) the prompt design module builds prompts for implicit text by adding masked tokens, and (2) the cloze procedure module fine-tunes the prompts by utilizing masked language modeling (MLM) to predict the explicit words with the implicit prompts. Experimental results on our dataset demonstrate a significant improvement of 37.94% in the performance of VL models on implicit text after employing our TIE method.
2020
TSDG: Content-aware Neural Response Generation with Two-stage Decoding Process
Junsheng Kong | Zhicheng Zhong | Yi Cai | Xin Wu | Da Ren
Findings of the Association for Computational Linguistics: EMNLP 2020
Junsheng Kong | Zhicheng Zhong | Yi Cai | Xin Wu | Da Ren
Findings of the Association for Computational Linguistics: EMNLP 2020
Neural response generative models have achieved remarkable progress in recent years but tend to yield irrelevant and uninformative responses. One of the reasons is that encoder-decoder based models always use a single decoder to generate a complete response at a stroke. This tends to generate high-frequency function words with less semantic information rather than low-frequency content words with more semantic information. To address this issue, we propose a content-aware model with two-stage decoding process named Two-stage Dialogue Generation (TSDG). We separate the decoding process of content words and function words so that content words can be generated independently without the interference of function words. Experimental results on two datasets indicate that our model significantly outperforms several competitive generative models in terms of automatic and human evaluation.
Task-oriented Domain-specific Meta-Embedding for Text Classification
Xin Wu | Yi Cai | Yang Kai | Tao Wang | Qing Li
Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP)
Xin Wu | Yi Cai | Yang Kai | Tao Wang | Qing Li
Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP)
Meta-embedding learning, which combines complementary information in different word embeddings, have shown superior performances across different Natural Language Processing tasks. However, domain-specific knowledge is still ignored by existing meta-embedding methods, which results in unstable performances across specific domains. Moreover, the importance of general and domain word embeddings is related to downstream tasks, how to regularize meta-embedding to adapt downstream tasks is an unsolved problem. In this paper, we propose a method to incorporate both domain-specific and task-oriented information into meta-embeddings. We conducted extensive experiments on four text classification datasets and the results show the effectiveness of our proposed method.
2010
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Co-authors
- Yi Cai 5
- Jie Cheng 1
- Zheng Ge 1
- Qi Han 1
- Jingcheng Hu 1
- Ailin Huang 1
- Zhewei Huang 1
- Wei Jin 1
- Yang Kai 1
- Junsheng Kong 1
- Xiangwen Kong 1
- Ho-fung Leung 1
- Qing Li 1
- Yue Peng 1
- Da Ren 1
- Shijie Shang 1
- Heung Yeung Shum 1
- Junyue Song 1
- Fanqi Wan 1
- Tao Wang 1
- Kaiwen Yan 1
- Xiaobo Yang 1
- Chengyuan Yao 1
- Jingwei Zhang 1
- Xiangyu Zhang 1
- Yinmin Zhang 1
- Zhicheng Zhong 1
- Hebin Zhou 1
- Hongyu Zhou 1