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Yifan Gao

25 accepted papers

2026

DecomPose: Disentangling Cross-Category Optimization Contention for Category-Level 6D Object Pose Estimation

ICML 2026poster

Category-level 6D object pose estimation is typically formulated as a multi-category joint learning problem with fully shared model parameters. However, pronounced geometric heterogeneity across categories entangles incompatible optimization signals in shared modules, resulting in gradient conflicts…

Cited by 0SourceScholar
2026

SEMITOOTH: A GENERALIZABLE SEMI-SUPERVISED FRAMEWORK FOR MULTI-SOURCE TOOTH SEGMENTATION

ICASSP 2026poster

With the rapid advancement of artificial intelligence, intelligent dentistry for clinical diagnosis and treatment has become increasingly promising. As the primary clinical dentistry task, tooth structure segmentation for Cone-Beam Computed Tomography (CBCT) has made significant progress in recent y…

Cited by 0SourcePDFScholar
2025

ALERT: An LLM-powered Benchmark for Automatic Evaluation of Recommendation Explanations

NAACL 2025long

Recommendation explanation systems have become increasingly vital with the widespread adoption of recommender systems. However, existing recommendation explanation evaluation benchmarks suffer from limited item diversity, impractical user profiling requirements, and unreliable and unscalable evaluat…

2025

Aligning Large Language Models with Implicit Preferences from User-Generated Content

ACL 2025long

Learning from preference feedback is essential for aligning large language models (LLMs) with human values and improving the quality of generated responses. However, existing preference learning methods rely heavily on curated data from humans or advanced LLMs, which is costly and difficult to scale…

2025

Can Language Models Follow Multiple Turns of Entangled Instructions?

EMNLP 2025

Despite of significant achievements in improving instruction-following capabilities of large language models (LLMs), the ability to process multiple potentially entangled or conflict instructions remains a considerable challenge. Real-world scenarios often require the consistency across multiple ins

2025

EcomScriptBench: A Multi-task Benchmark for E-commerce Script Planning via Step-wise Intention-Driven Product Association

ACL 2025long

Goal-oriented script planning, or the ability to devise coherent sequences of actions toward specific goals, is commonly employed by humans to plan for typical activities. In e-commerce, customers increasingly seek LLM-based assistants to generate scripts and recommend products at each step, thereby…

Cited by 0SourcePDFScholar
2025

Hephaestus: Improving Fundamental Agent Capabilities of Large Language Models through Continual Pre-Training

NAACL 2025long

Due to the scarcity of agent-oriented pre-training data, LLM-based autonomous agents typically rely on complex prompting or extensive fine-tuning, which often fails to introduce new capabilities while preserving strong generalizability. We introduce Hephaestus-Forge, the first large-scale pre-traini…

Cited by 1SourcePDFScholar
2025

IHEval: Evaluating Language Models on Following the Instruction Hierarchy

NAACL 2025long

The instruction hierarchy, which establishes a priority order from system messages to user messages, conversation history, and tool outputs, is essential for ensuring consistent and safe behavior in language models (LMs). Despite its importance, this topic receives limited attention, and there is a…

2025

Leveraging Multimodal Methods and Spontaneous Speech for Alzheimer's Disease Identification

ICASSP 2025accepted

Cognitive impairment detection through spontaneous speech is a promising avenue for early diagnosis of Alzheimer’s disease (AD) and mild cognitive impairment (MCI), where timely intervention can significantly improve patient outcomes. The PROCESS Grand Challenge at ICASSP 2025 addresses these tasks…

Cited by 0SourceScholar
2025

M+: Extending MemoryLLM with Scalable Long-Term Memory

ICML 2025poster

Equipping large language models (LLMs) with latent-space memory has attracted increasing attention as they can extend the context window of existing language models. However, retaining information from the distant past remains a challenge. For example, MemoryLLM (Wang et al., 2024a), as a representa…

2025

MTRec: Learning to Align with User Preferences via Mental Reward Models

NeurIPS 2025poster

Recommendation models are predominantly trained using implicit user feedback, since explicit feedback is often costly to obtain. However, implicit feedback, such as clicks, does not always reflect users' real preferences. For example, a user might click on a news article because of its attractive he…

Cited by 0SourceScholar
2025

UniConv: Unifying Retrieval and Response Generation for Large Language Models in Conversations

ACL 2025long

The rapid advancement of conversational search systems revolutionizes how information is accessed by enabling the multi-turn interaction between the user and the system. Existing conversational search systems are usually built with two different models. This separation restricts the system from leve…

Cited by 0SourcePDFScholar
2024

Large Language Models Are Poor Clinical Decision-Makers: A Comprehensive Benchmark

EMNLP 2024main

The adoption of large language models (LLMs) to assist clinicians has attracted remarkable attention. Existing works mainly adopt the close-ended question-answering (QA) task with answer options for evaluation. However, many clinical decisions involve answering open-ended questions without pre-set o…

2024

MEMORYLLM: Towards Self-Updatable Large Language Models

ICML 2024poster

Existing Large Language Models (LLMs) usually remain static after deployment, which might make it hard to inject new knowledge into the model. We aim to build models containing a considerable portion of self-updatable parameters, enabling the model to integrate new knowledge effectively and efficien…

2024

Shopping MMLU: A Massive Multi-Task Online Shopping Benchmark for Large Language Models

NeurIPS 2024poster

Online shopping is a complex multi-task, few-shot learning problem with a wide and evolving range of entities, relations, and tasks. However, existing models and benchmarks are commonly tailored to specific tasks, falling short of capturing the full complexity of online shopping. Large Language Mode…

2023

Enhancing User Intent Capture in Session-Based Recommendation with Attribute Patterns

NeurIPS 2023poster

The goal of session-based recommendation in E-commerce is to predict the next item that an anonymous user will purchase based on the browsing and purchase history. However, constructing global or local transition graphs to supplement session data can lead to noisy correlations and user intent vanish…

2023

FolkScope: Intention Knowledge Graph Construction for E-commerce Commonsense Discovery

ACL 2023findings

Understanding users’ intentions in e-commerce platforms requires commonsense knowledge. In this paper, we present FolkScope, an intention knowledge graph construction framework, to reveal the structure of humans’ minds about purchasing items. As commonsense knowledge is usually ineffable and not exp…

2023

Graph Reasoning for Question Answering with Triplet Retrieval

ACL 2023findings

Answering complex questions often requires reasoning over knowledge graphs (KGs). State-of-the-art methods often utilize entities in questions to retrieve local subgraphs, which are then fed into KG encoder, e.g. graph neural networks (GNNs), to model their local structures and integrated into langu…

2023

Improving Consistency for Text Summarization with Energy Functions

EMNLP 2023short findings

Current abstractive summarization models often generate inconsistent content, i.e. texts that are not directly inferable from the source document, are not consistent with respect to world knowledge, or are self-contradictory. These inconsistencies motivate a new consistency taxonomy that we define a…

Cited by 0SourceScholar
2023

Knowledge-Selective Pretraining for Attribute Value Extraction

EMNLP 2023long findings

Attribute Value Extraction (AVE) aims to retrieve the values of attributes from the product profiles. The state-of-the-art methods tackle the AVE task through a question-answering (QA) paradigm, where the value is predicted from the context (i.e. product profile) given a query (i.e. attributes). Des…

Cited by 0SourceScholar
2023

SCOTT: Self-Consistent Chain-of-Thought Distillation

ACL 2023long

Large language models (LMs) beyond a certain scale, demonstrate the emergent capability of generating free-text rationales for their predictions via chain-of-thought (CoT) prompting. While CoT can yield dramatically improved performance, such gains are only observed for sufficiently large LMs. Even…

2022

ProQA: Structural Prompt-based Pre-training for Unified Question Answering

NAACL 2022long

Question Answering (QA) is a longstanding challenge in natural language processing. Existing QA works mostly focus on specific question types, knowledge domains, or reasoning skills. The specialty in QA research hinders systems from modeling commonalities between tasks and generalization for wider a…

2022

Retrieval-Augmented Multilingual Keyphrase Generation with Retriever-Generator Iterative Training

NAACL 2022findings

Keyphrase generation is the task of automatically predicting keyphrases given a piece of long text. Despite its recent flourishing, keyphrase generation on non-English languages haven’t been vastly investigated. In this paper, we call attention to a new setting named multilingual keyphrase generatio…

2021

Answering Ambiguous Questions through Generative Evidence Fusion and Round-Trip Prediction

ACL 2021long

In open-domain question answering, questions are highly likely to be ambiguous because users may not know the scope of relevant topics when formulating them. Therefore, a system needs to find possible interpretations of the question, and predict one or multiple plausible answers. When multiple plaus…

2020

Leveraging WordNet Paths for Neural Hypernym Prediction

COLING 2020main

We formulate the problem of hypernym prediction as a sequence generation task, where the sequences are taxonomy paths in WordNet. Our experiments with encoder-decoder models show that training to generate taxonomy paths can improve the performance of direct hypernym prediction. As a simple but power…