Search Results for author: Fengran Mo

Found 29 papers, 19 papers with code

OmniGeo: Towards a Multimodal Large Language Models for Geospatial Artificial Intelligence

no code implementations20 Mar 2025 Long Yuan, Fengran Mo, Kaiyu Huang, Wenjie Wang, Wangyuxuan Zhai, Xiaoyu Zhu, You Li, Jinan Xu, Jian-Yun Nie

In this paper, we explore the potential of multimodal LLMs (MLLM) for geospatial artificial intelligence (GeoAI), a field that leverages spatial data to address challenges in domains including Geospatial Semantics, Health Geography, Urban Geography, Urban Perception, and Remote Sensing.

Instruction Following Natural Language Understanding +1

Entropy-based Exploration Conduction for Multi-step Reasoning

no code implementations20 Mar 2025 Jinghan Zhang, Xiting Wang, Fengran Mo, Yeyang Zhou, Wanfu Gao, Kunpeng Liu

In large language model (LLM) reasoning, multi-step processes have proven effective for solving complex tasks.

Language Modeling Language Modelling +1

A Survey of Model Architectures in Information Retrieval

no code implementations20 Feb 2025 Zhichao Xu, Fengran Mo, Zhiqi Huang, Crystina Zhang, Puxuan Yu, Bei Wang, Jimmy Lin, Vivek Srikumar

This survey examines the evolution of model architectures in information retrieval (IR), focusing on two key aspects: backbone models for feature extraction and end-to-end system architectures for relevance estimation.

Information Retrieval model +2

TGB-Seq Benchmark: Challenging Temporal GNNs with Complex Sequential Dynamics

1 code implementation5 Feb 2025 Lu Yi, Jie Peng, Yanping Zheng, Fengran Mo, Zhewei Wei, Yuhang Ye, Yue Zixuan, Zengfeng Huang

In this study, we demonstrate that existing methods, such as GraphMixer and DyGFormer, are inherently incapable of learning simple sequential dynamics, such as ``a user who has followed OpenAI and Anthropic is more likely to follow AI at Meta next.''

Benchmarking Link Prediction +1

LEKA:LLM-Enhanced Knowledge Augmentation

no code implementations29 Jan 2025 Xinhao Zhang, Jinghan Zhang, Fengran Mo, Dongjie Wang, Yanjie Fu, Kunpeng Liu

Therefore, we design a knowledge augmentation method LEKA for knowledge transfer that actively searches for suitable knowledge sources that can enrich the target domain's knowledge.

Decision Making Transfer Learning

Can Large Language Models Understand Preferences in Personalized Recommendation?

1 code implementation23 Jan 2025 Zhaoxuan Tan, Zinan Zeng, Qingkai Zeng, Zhenyu Wu, Zheyuan Liu, Fengran Mo, Meng Jiang

To address this, we introduce PerRecBench, disassociating the evaluation from these two factors and assessing recommendation techniques on capturing the personal preferences in a grouped ranking manner.

regression

RALI@TREC iKAT 2024: Achieving Personalization via Retrieval Fusion in Conversational Search

no code implementations11 Dec 2024 Yuchen Hui, Fengran Mo, Milan Mao, Jian-Yun Nie

The Recherche Appliquee en Linguistique Informatique (RALI) team participated in the 2024 TREC Interactive Knowledge Assistance (iKAT) Track.

Conversational Search Retrieval

Thought Space Explorer: Navigating and Expanding Thought Space for Large Language Model Reasoning

no code implementations31 Oct 2024 Jinghan Zhang, Fengran Mo, Xiting Wang, Kunpeng Liu

Recent advances in large language models (LLMs) have demonstrated their potential in handling complex reasoning tasks, which are usually achieved by constructing a thought chain to guide the model to solve the problem with multi-step thinking.

Language Modeling Language Modelling +1

Aligning Query Representation with Rewritten Query and Relevance Judgments in Conversational Search

1 code implementation29 Jul 2024 Fengran Mo, Chen Qu, Kelong Mao, Yihong Wu, Zhan Su, Kaiyu Huang, Jian-Yun Nie

In this paper, we leverage both rewritten queries and relevance judgments in the conversational search data to train a better query representation model.

Conversational Search

How to Leverage Personal Textual Knowledge for Personalized Conversational Information Retrieval

1 code implementation23 Jul 2024 Fengran Mo, Longxiang Zhao, Kaiyu Huang, Yue Dong, Degen Huang, Jian-Yun Nie

Personalized conversational information retrieval (CIR) combines conversational and personalizable elements to satisfy various users' complex information needs through multi-turn interaction based on their backgrounds.

Information Retrieval Language Modeling +3

Boosting Biomedical Concept Extraction by Rule-Based Data Augmentation

no code implementations3 Jul 2024 Qiwei Shao, Fengran Mo, Jian-Yun Nie

Document-level biomedical concept extraction is the task of identifying biomedical concepts mentioned in a given document.

Data Augmentation

Unifying Graph Convolution and Contrastive Learning in Collaborative Filtering

1 code implementation20 Jun 2024 Yihong Wu, Le Zhang, Fengran Mo, Tianyu Zhu, Weizhi Ma, Jian-Yun Nie

By examining the learning dynamics and equilibrium of the contrastive loss, we offer a fresh lens to understand contrastive learning via graph theory, emphasizing its capability to capture high-order connectivity.

Collaborative Filtering Contrastive Learning

CHIQ: Contextual History Enhancement for Improving Query Rewriting in Conversational Search

1 code implementation7 Jun 2024 Fengran Mo, Abbas Ghaddar, Kelong Mao, Mehdi Rezagholizadeh, Boxing Chen, Qun Liu, Jian-Yun Nie

In this paper, we study how open-source large language models (LLMs) can be effectively deployed for improving query rewriting in conversational search, especially for ambiguous queries.

Conversational Search

Mixture of Latent Experts Using Tensor Products

1 code implementation26 May 2024 Zhan Su, Fengran Mo, Prayag Tiwari, Benyou Wang, Jian-Yun Nie, Jakob Grue Simonsen

For \textit{routing function}, we tailor two innovative routing functions according to the granularity: \texttt{TensorPoly-I} which directs to each rank within the entangled tensor while \texttt{TensorPoly-II} offers a finer-grained routing approach targeting each order of the entangled tensor.

Language Modelling Multi-Task Learning +1

A Survey on Large Language Models with Multilingualism: Recent Advances and New Frontiers

1 code implementation17 May 2024 Kaiyu Huang, Fengran Mo, Xinyu Zhang, Hongliang Li, You Li, Yuanchi Zhang, Weijian Yi, Yulong Mao, Jinchen Liu, Yuzhuang Xu, Jinan Xu, Jian-Yun Nie, Yang Liu

The survey aims to help the research community address multilingual problems and provide a comprehensive understanding of the core concepts, key techniques, and latest developments in multilingual natural language processing based on LLMs.

Information Retrieval Survey

Language Modeling Using Tensor Trains

1 code implementation7 May 2024 Zhan Su, Yuqin Zhou, Fengran Mo, Jakob Grue Simonsen

We propose a novel tensor network language model based on the simplest tensor network (i. e., tensor trains), called `Tensor Train Language Model' (TTLM).

Language Modeling Language Modelling

A User-Centric Multi-Intent Benchmark for Evaluating Large Language Models

1 code implementation22 Apr 2024 Jiayin Wang, Fengran Mo, Weizhi Ma, Peijie Sun, Min Zhang, Jian-Yun Nie

Based on these ability scores, it is hard for users to determine which LLM best suits their particular needs.

Benchmarking World Knowledge

ConvSDG: Session Data Generation for Conversational Search

1 code implementation17 Mar 2024 Fengran Mo, Bole Yi, Kelong Mao, Chen Qu, Kaiyu Huang, Jian-Yun Nie

Conversational search provides a more convenient interface for users to search by allowing multi-turn interaction with the search engine.

Conversational Search Retrieval +1

History-Aware Conversational Dense Retrieval

1 code implementation30 Jan 2024 Fengran Mo, Chen Qu, Kelong Mao, Tianyu Zhu, Zhan Su, Kaiyu Huang, Jian-Yun Nie

To address the aforementioned issues, we propose a History-Aware Conversational Dense Retrieval (HAConvDR) system, which incorporates two ideas: context-denoised query reformulation and automatic mining of supervision signals based on the actual impact of historical turns.

Conversational Search Information Retrieval +1

Collaboration and Transition: Distilling Item Transitions into Multi-Query Self-Attention for Sequential Recommendation

1 code implementation2 Nov 2023 Tianyu Zhu, Yansong Shi, Yuan Zhang, Yihong Wu, Fengran Mo, Jian-Yun Nie

Second, we develop a transition-aware embedding distillation module that distills global item-to-item transition patterns into item embeddings, which enables the model to memorize and leverage transitional signals and serves as a calibrator for collaborative signals.

Sequential Recommendation

MoqaGPT : Zero-Shot Multi-modal Open-domain Question Answering with Large Language Model

1 code implementation20 Oct 2023 Le Zhang, Yihong Wu, Fengran Mo, Jian-Yun Nie, Aishwarya Agrawal

To enable LLMs to tackle the task in a zero-shot manner, we introduce MoqaGPT, a straightforward and flexible framework.

Language Modeling Language Modelling +3

ConvGQR: Generative Query Reformulation for Conversational Search

1 code implementation25 May 2023 Fengran Mo, Kelong Mao, Yutao Zhu, Yihong Wu, Kaiyu Huang, Jian-Yun Nie

In this paper, we propose ConvGQR, a new framework to reformulate conversational queries based on generative pre-trained language models (PLMs), one for query rewriting and another for generating potential answers.

Conversational Search Retrieval

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