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Zengchang Qin

10 accepted papers

2025

Align Attention Heads Before Merging Them: An Effective Way for Converting MHA to GQA

EMNLP 2025

Large language models (LLMs) have demonstrated exceptional performance across diverse natural language processing tasks. However, as the model size and the input sequence’s length increase, the linearly increasing key-value (KV) cache significantly degrades inference throughput. Therefore, grouped-q

2025

Mix-of-Granularity: Optimize the Chunking Granularity for Retrieval-Augmented Generation

COLING 2025main

Integrating information from various reference databases is a major challenge for Retrieval-Augmented Generation (RAG) systems because each knowledge source adopts a unique data structure and follows different conventions. Retrieving from multiple knowledge sources with one fixed strategy usually le…

2025

SyntheT2C: Generating Synthetic Data for Fine-Tuning Large Language Models on the Text2Cypher Task

COLING 2025main

Integrating Large Language Models (LLMs) with existing Knowledge Graph (KG) databases presents a promising avenue for enhancing LLMs’ efficacy and mitigating their “hallucinations”. Given that most KGs reside in graph databases accessible solely through specialized query languages (e.g., Cypher), it…

2024

Robust Lightweight Depth Estimation Model via Data-Free Distillation

ICASSP 2024accepted

Existing Monocular Depth Estimation (MDE) methods often use large and complex neural networks. Despite the advanced performance of these methods, we consider the efficiency and generalization for practical applications with limited resources. In our paper, we present an efficient transformer-based m…

Cited by 0SourceScholar
2023

Boosting Semantic Segmentation from the Perspective of Explicit Class Embeddings

ICCV 2023poster

Semantic segmentation is a computer vision task that associates a label with each pixel in an image. Modern approaches tend to introduce class embeddings into semantic segmentation for deeply utilizing category semantics, and regard supervised class masks as final predictions. In this paper, we expl…

Cited by 11PDFcodeScholar
2022

Sparse Double Descent: Where Network Pruning Aggravates Overfitting

ICML 2022spotlight

People usually believe that network pruning not only reduces the computational cost of deep networks, but also prevents overfitting by decreasing model capacity. However, our work surprisingly discovers that network pruning sometimes even aggravates overfitting. We report an unexpected sparse double…

2020

DAM: Deliberation, Abandon and Memory Networks for Generating Detailed and Non-repetitive Responses in Visual Dialogue

IJCAI 2020poster

Visual Dialogue task requires an agent to be engaged in a conversation with human about an image. The ability of generating detailed and non-repetitive responses is crucial for the agent to achieve human-like conversation. In this paper, we propose a novel generative decoding architecture to generat…

2019

A Sequential Guiding Network with Attention for Image Captioning

ICASSP 2019accepted

The recent advances of deep learning in both computer vision (CV) and natural language processing (NLP) provide us a new way of understanding semantics, by which we can deal with more challenging tasks such as automatic description generation from natural images. In this challenge, the encoder-decod…

Cited by 0SourceScholar
2019

Pixel Level Data Augmentation for Semantic Image Segmentation Using Generative Adversarial Networks

ICASSP 2019accepted

Semantic segmentation is one of the basic topics in computer vision, it aims to assign semantic labels to every pixel of an image. Unbalanced semantic label distribution could have a negative influence on segmentation accuracy. In this paper, we investigate using data augmentation approach to balanc…

Cited by 0SourceScholar
2019

Structured Knowledge Distillation for Semantic Segmentation

CVPR 2019oral

In this paper, we investigate the issue of knowledge distillation for training compact semantic segmentation networks by making use of cumbersome networks. We start from the straightforward scheme, pixel-wise distillation, which applies the distillation scheme originally introduced for image classif…

Cited by 929PDFScholar