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Jiajie Zhang

20 accepted papers

2026

From Observation to Action: Latent Action-based Primitive Segmentation for VLA Pre-training in Industrial Settings

CVPR 2026

We present a novel unsupervised framework to unlock vast unlabeled human demonstration data from continuous industrial video streams for Vision-Language-Action (VLA) model pre-training. Our method first trains a lightweight motion tokenizer to encode motion dynamics, then employs an unsupervised act

Cited by 0SourcecodeScholar
2025

Intelligent LiDAR Navigation: Leveraging External Information and Semantic Maps with LLM as Copilot

IROS 2025

Traditional robot navigation systems primarily utilize occupancy grid maps and laser-based sensing technologies, as demonstrated by the popular move_base package in ROS. Unlike robots, humans navigate not only through spatial awareness and physical distances but also by integrating external informat

Cited by 4SourcecodeScholar
2025

LongBench v2: Towards Deeper Understanding and Reasoning on Realistic Long-context Multitasks

ACL 2025long

This paper introduces LongBench v2, a benchmark designed to assess the ability of LLMs to handle long-context problems requiring deep understanding and reasoning across real-world multitasks. LongBench v2 consists of 503 challenging multiple-choice questions, with contexts ranging from 8k to 2M word…

2025

LongCite: Enabling LLMs to Generate Fine-grained Citations in Long-Context QA

ACL 2025finding

Though current long-context large language models (LLMs) have demonstrated impressive capacities in answering various questions based on extensive text, the lack of citations in their responses makes user verification difficult, leading to concerns about their trustworthiness due to the potential ha…

2025

LongReward: Improving Long-context Large Language Models with AI Feedback

ACL 2025long

Though significant advancements have been achieved in developing long-context large language models (LLMs), the compromised quality of LLM-synthesized data for supervised fine-tuning (SFT) often affects the long-context performance of SFT models and leads to inherent limitations. In principle, reinf…

2025

LongWriter: Unleashing 10,000+ Word Generation from Long Context LLMs

ICLR 2025poster

Current long context large language models (LLMs) can process inputs up to 100,000 tokens, yet struggle to generate outputs exceeding even a modest length of 2,000 words. Through controlled experiments, we find that the model's effective generation length is inherently bounded by the sample it has s…

2025

MambaSFLNet: A Mamba-based Model for Low-Light Image Enhancement with Spatial and Frequency Features

IROS 2025

Low-light image enhancement (LLIE) aims to enhance the illumination of images that are captured under dark conditions, which is critical for various applications in dim environments, such as robotics and autonomous driving. Existing convolutional neural network (CNN)-based methods usually struggle t

Cited by 0SourcecodeScholar
2025

Pre-training Distillation for Large Language Models: A Design Space Exploration

ACL 2025long

Knowledge distillation (KD) aims to transfer knowledge from a large teacher model to a smaller student model. Previous work applying KD in the field of large language models (LLMs) typically focused on the post-training phase, where the student LLM learns directly from instructions and corresponding…

Cited by 0SourcePDFScholar
2025

T1: Advancing Language Model Reasoning through Reinforcement Learning and Inference Scaling

ICML 2025poster

Large language models (LLMs) have demonstrated remarkable capabilities in complex reasoning tasks. However, existing approaches mainly rely on imitation learning and struggle to achieve effective test-time scaling. While reinforcement learning (RL) holds promise for enabling self-exploration, recent…

2025

TUMTraf VideoQA: Dataset and Benchmark for Unified Spatio-Temporal Video Understanding in Traffic Scenes

ICML 2025poster

We present TUMTraf VideoQA, a novel dataset and benchmark designed for spatio-temporal video understanding in complex roadside traffic scenarios. The dataset comprises 1,000 videos, featuring 85,000 multiple-choice QA pairs, 2,300 object captioning, and 5,700 object grounding annotations, encompassi…

Cited by 0SourcePDFScholar
2024

KB-Plugin: A Plug-and-play Framework for Large Language Models to Induce Programs over Low-resourced Knowledge Bases

EMNLP 2024main

Program induction (PI) has become a promising paradigm for using knowledge bases (KBs) to help large language models (LLMs) answer complex knowledge-intensive questions. Nonetheless, PI typically relies on a large number of parallel question-program pairs to make the LLM aware of the schema of a giv…

2024

LongAlign: A Recipe for Long Context Alignment of Large Language Models

EMNLP 2024finding

Extending large language models to effectively handle long contexts requires instruction fine-tuning on input sequences of similar length. To address this, we present LongAlign—a recipe of the instruction data, training, and evaluation for long context alignment. First, we construct a long instructi…

2024

LongBench: A Bilingual, Multitask Benchmark for Long Context Understanding

ACL 2024long

Although large language models (LLMs) demonstrate impressive performance for many language tasks, most of them can only handle texts a few thousand tokens long, limiting their applications on longer sequence inputs, such as books, reports, and codebases. Recent works have proposed methods to improve…

2024

UltraEval: A Lightweight Platform for Flexible and Comprehensive Evaluation for LLMs

ACL 2024system demonstrations

Evaluation is pivotal for honing Large Language Models (LLMs), pinpointing their capabilities and guiding enhancements. The rapid development of LLMs calls for a lightweight and easy-to-use framework for swift evaluation deployment. However, due to the various implementation details to consider, dev…

2023

Probabilistic Tree-of-thought Reasoning for Answering Knowledge-intensive Complex Questions

EMNLP 2023long findings

Large language models (LLMs) are capable of answering knowledge-intensive complex questions with chain-of-thought (CoT) reasoning. However, they tend to generate factually incorrect reasoning steps when the required knowledge is not available or up-to-date in models' parameters. Recent works turn to…

Cited by 0SourcecodeScholar
2023

Reasoning over Hierarchical Question Decomposition Tree for Explainable Question Answering

ACL 2023long

Explainable question answering (XQA) aims to answer a given question and provide an explanation why the answer is selected. Existing XQA methods focus on reasoning on a single knowledge source, e.g., structured knowledge bases, unstructured corpora, etc. However, integrating information from heterog…

Cited by 7SourcePDFScholar
2023

Video Event Extraction via Tracking Visual States of Arguments

AAAI 2023technical

Video event extraction aims to detect salient events from a video and identify the arguments for each event as well as their semantic roles. Existing methods focus on capturing the overall visual scene of each frame, ignoring fine-grained argument-level information. Inspired by the definition of eve…

2022

ELLE: Efficient Lifelong Pre-training for Emerging Data

ACL 2022findings

Current pre-trained language models (PLM) are typically trained with static data, ignoring that in real-world scenarios, streaming data of various sources may continuously grow. This requires PLMs to integrate the information from all the sources in a lifelong manner. Although this goal could be ach…

2022

Knowledge Inheritance for Pre-trained Language Models

NAACL 2022long

Recent explorations of large-scale pre-trained language models (PLMs) have revealed the power of PLMs with huge amounts of parameters, setting off a wave of training ever-larger PLMs. However, it requires tremendous computational resources to train a large-scale PLM, which may be practically unaffor…