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Longteng Guo

19 accepted papers

2026

AdaSpark: Adaptive Sparsity for Efficient Long-Video Understanding

CVPR 2026

Processing long-form videos with Video Large Language Models (Video-LLMs) is computationally prohibitive. Current efficiency methods often compromise fine-grained perception through irreversible information disposal or inhibit long-range temporal modeling via rigid, predefined sparse patterns. This

Cited by 0SourceScholar
2026

Divid: Disentangled Spatial-Temporal Modeling within LLMs for Temporally Grounded Video Understanding

ICLR 2026poster

Recent advances in Video LLMs have improved video understanding performance, but temporally grounded understanding in long-form videos remains challenging. Most models encode video frames into a flat sequence of visual tokens, which are then processed together with textual input by the LLM. While ef…

Cited by 0SourceScholar
2026

SurveilNav: Collaborative Object Goal Navigation with Robot and Surveillance System

ICRA 2026poster

With the growing deployment of surveillance systems in factories, offices, and homes, integrating them with robots offers a promising direction for collaborative and efficient task execution. However, existing approaches largely focus on single-robot scenarios and struggle with multi-view collaborat…

2026

UrbanNav: Learning Language-Guided Embodied Urban Navigation from Web-Scale Human Trajectories

AAAI 2026technical

Navigating complex urban environments using natural language instructions poses significant challenges for embodied agents, including noisy language instructions, ambiguous spatial references, diverse landmarks, and dynamic street scenes. Current visual navigation methods are typically limited to si

Cited by 0SourcePDFScholar
2025

Ada-K Routing: Boosting the Efficiency of MoE-based LLMs

ICLR 2025poster

In the era of Large Language Models (LLMs), Mixture-of-Experts (MoE) architectures offer a promising approach to managing computational costs while scaling up model parameters. Conventional MoE-based LLMs typically employ static Top-K routing, which activates a fixed and equal number of experts for…

Cited by 1SourcePDFScholar
2025

Breaking the Encoder Barrier for Seamless Video-Language Understanding

ICCV 2025poster

Most Video-Large Language Models (Video-LLMs) adopt an encoder-decoder framework, where a vision encoder extracts frame-wise features for processing by a language model. However, this approach incurs high computational costs, introduces resolution biases, and struggles to capture fine-grained multim…

Cited by 0SourcePDFScholar
2025

Efficient Motion-Aware Video MLLM

CVPR 2025highlight

Most current video MLLMs rely on uniform frame sampling and image-level encoders, resulting in inefficient data processing and limited motion awareness. To address these challenges, we introduce EMA, an Efficient Motion-Aware video MLLM that utilizes compressed video structures as inputs. We propose…

Cited by 0SourcePDFScholar
2025

Needle In A Video Haystack: A Scalable Synthetic Evaluator for Video MLLMs

ICLR 2025poster

Video understanding is a crucial next step for multimodal large language models (MLLMs). Various benchmarks are introduced for better evaluating the MLLMs. Nevertheless, current video benchmarks are still inefficient for evaluating video models during iterative development due to the high cost of co…

2025

VRoPE: Rotary Position Embedding for Video Large Language Models

EMNLP 2025

Rotary Position Embedding (RoPE) has shown strong performance in text-based Large Language Models (LLMs), but extending it to video remains a challenge due to the intricate spatiotemporal structure of video frames. Existing adaptations, such as RoPE-3D, attempt to encode spatial and temporal dimensi

2025

ViPE: Visual Perception in Parameter Space for Efficient Video-Language Understanding

EMNLP 2025

Existing video-language models (Video-LLMs) typically rely on concatenating visual tokens with textual inputs for joint modeling. However, this token-level alignment leads to significant inefficiency, especially when scaling to long videos with dense visual inputs. In this work, we propose a video-t

Cited by 0SourcePDFScholar
2024

EVE: Efficient Vision-Language Pre-training with Masked Prediction and Modality-Aware MoE

AAAI 2024technical

Building scalable vision-language models to learn from diverse, multimodal data remains an open challenge. In this paper, we introduce an Efficient Vision-languagE foundation model, namely EVE, which is one unified multimodal Transformer pre-trained solely by one unified pre-training task. Specifica…

Cited by 11SourcePDFScholar
2024

SC-Tune: Unleashing Self-Consistent Referential Comprehension in Large Vision Language Models

CVPR 2024poster

Recent trends in Large Vision Language Models (LVLMs) research have been increasingly focusing on advancing beyond general image understanding towards more nuanced object-level referential comprehension. In this paper we present and delve into the self-consistency capability of LVLMs a crucial aspec…

2024

Self-Bootstrapped Visual-Language Model for Knowledge Selection and Question Answering

EMNLP 2024main

While large pre-trained visual-language models have shown promising results on traditional visual question answering benchmarks, it is still challenging for them to answer complex VQA problems which requires diverse world knowledge. Motivated by the research of retrieval-augmented generation in the…

2024

Unveiling Parts Beyond Objects: Towards Finer-Granularity Referring Expression Segmentation

CVPR 2024poster

Referring expression segmentation (RES) aims at segmenting the foreground masks of the entities that match the descriptive natural language expression. Previous datasets and methods for classic RES task heavily rely on the prior assumption that one expression must refer to object-level targets. In t…

2020

Non-Autoregressive Image Captioning with Counterfactuals-Critical Multi-Agent Learning

IJCAI 2020poster

Most image captioning models are autoregressive, i.e. they generate each word by conditioning on previously generated words, which leads to heavy latency during inference. Recently, non-autoregressive decoding has been proposed in machine translation to speed up the inference time by generating all…

Cited by 0SourcePDFScholar
2020

Normalized and Geometry-Aware Self-Attention Network for Image Captioning

CVPR 2020poster

Self-attention (SA) network has shown profound value in image captioning. In this paper, we improve SA from two aspects to promote the performance of image captioning. First, we propose Normalized Self-Attention (NSA), a reparameterization of SA that brings the benefits of normalization inside SA. W…

Cited by 284PDFScholar