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Ziyang Wang

30 accepted papers

2026

AutoLink: Autonomous Schema Exploration and Expansion for Scalable Schema Linking in Text-to-SQL at Scale

AAAI 2026technical

For industrial-scale text-to-SQL, supplying the entire database schema to Large Language Models (LLMs) is impractical due to context window limits and irrelevant noise. Schema linking, which filters the schema to a relevant subset, is therefore critical. However, existing methods incur prohibitive c

Cited by 0SourcePDFScholar
2026

Hierarchical Semantic-Acoustic Modeling via Semi-Discrete Residual Representations for Expressive End-to-End Speech Synthesis

ICLR 2026poster

Generative models for speech synthesis face a fundamental trade-off: discrete tokens ensure stability but sacrifice expressivity, while continuous signals retain acoustic richness but suffer from error accumulation due to task entanglement. This challenge has driven the field towards multi-stage pip…

Cited by 0SourcecodeScholar
2026

LLM DNA: Tracing Model Evolution via Functional Representations

ICLR 2026oral

The explosive growth of large language models (LLMs) has created a vast but opaque landscape: millions of models exist, yet their evolutionary relationships through fine-tuning, distillation, or adaptation are often undocumented or unclear, complicating LLM management. Existing methods are limited b…

Cited by 0SourcecodeScholar
2026

PosPrune: Visual Token Pruning with Positional Bias Correction for Efficient Large Vision-Language Models

AAAI 2026technical

Large Vision-Language Models (LVLMs) enhance performance on vision-language tasks by integrating visual features from pre-trained vision encoders into large language models (LLMs). However, the large number of visual tokens introduces significant computational overhead. Existing token pruning method

Cited by 0SourcePDFScholar
2026

RADAR: VQ-VAE Decoder of VAR is a Good Student for Restoring Against Degradation by Acceleration

CVPR 2026

Visual Autoregressive Modeling (VAR) has recently emerged as a powerful paradigm for image generation that surpasses diffusion models in efficiency and quality. However, accelerating attention computation in VAR is still challenging because attention patterns across scales exhibit strong and complex

Cited by 0SourceScholar
2026

TTOM: Test-Time Optimization and Memorization for Compositional Video Generation

ICLR 2026poster

Video Foundation Models (VFMs) exhibit remarkable visual generation performance, but struggle in compositional scenarios (\eg, motion, numeracy, and spatial relation). In this work, we introduce **Test-Time Optimization and Memorization (TTOM)**, a training-free framework that aligns VFM outputs wi…

Cited by 0SourceScholar
2026

Verifiable Multimodal Reasoning: Fact-level Attribution with Multimodal Sources

ICML 2026poster

Multimodal large language models (MLLMs) are increasingly used for real-world tasks involving multi-step reasoning and long-form generation, where reliability requires grounding model outputs in heterogeneous input sources and verifying individual factual claims. However, existing multimodal groundi…

Cited by 0SourceScholar
2025

Cross-Modal Interactive Perception Network with Mamba for Lung Tumor Segmentation in PET-CT Images

CVPR 2025poster

Lung cancer is a leading cause of cancer-related deaths globally. PET-CT is crucial for imaging lung tumors, providing essential metabolic and anatomical information, while it faces challenges such as poor image quality, motion artifacts, and complex tumor morphology. Deep learning-based models are…

2025

DiffPO: Diffusion-styled Preference Optimization for Inference Time Alignment of Large Language Models

ACL 2025long

Inference-time alignment provides an efficient alternative for aligning LLMs with humans. However, these approaches still face challenges, such as limited scalability due to policy-specific value functions and latency during the inference phase. In this paper, we propose a novel approach, Diffusion-…

2025

HFE-RWKV: High-Frequency Enhanced RWKV Model for Efficient Left Ventricle Segmentation in Pediatric Echocardiograms

ICASSP 2025accepted

Automated ventricular function analysis can improve healthcare in resource-scarce areas, but current segmentation methods struggle with accurately delineating the irregular shape of the left ventricle due to a lack of emphasis on exploring the high-frequency target boundary features, and computation…

Cited by 0SourceScholar
2025

MEXA: Towards General Multimodal Reasoning with Dynamic Multi-Expert Aggregation

EMNLP 2025

Combining pre-trained expert models offers substantial potential for scalable multimodal reasoning, but building a unified framework remains challenging due to the increasing diversity of input modalities and task complexity. For instance, medical diagnosis requires precise reasoning over structured

2025

Mitigating Posterior Salience Attenuation in Long-Context LLMs with Positional Contrastive Decoding

ACL 2025short

While Large Language Models (LLMs) support long contexts, they struggle with performance degradation within the context window. Current solutions incur prohibitive training costs, leaving statistical behaviors and cost-effective approaches underexplored. From the decoding perspective, we identify th…

Cited by 0SourcePDFScholar
2025

Spectral Enhancement and Pseudo-Anchor Guidance for Infrared-Visible Person Re-Identification

ICASSP 2025accepted

The development of deep learning has facilitated the application of person re-identification (ReID) technology in intelligent security. Visible-infrared person re-identification (VI-ReID) aims to match pedestrians across infrared and visible modality images enabling 24-hour surveillance. Current stu…

Cited by 0SourceScholar
2025

Video-RTS: Rethinking Reinforcement Learning and Test-Time Scaling for Efficient and Enhanced Video Reasoning

EMNLP 2025

Despite advances in reinforcement learning (RL)-based video reasoning with large language models (LLMs), data collection and fine- tuning remain significant challenges. These methods often rely on large-scale supervised fine-tuning (SFT) with extensive video data and long Chain-of-Thought (CoT) anno

2025

VideoTree: Adaptive Tree-based Video Representation for LLM Reasoning on Long Videos

CVPR 2025poster

Long-form video understanding has been a challenging task due to the high redundancy in video data and the abundance of query-irrelevant information. To tackle this challenge, we propose VideoTree, a training-free framework which builds a query-adaptive and hierarchical video representation for LLM…

2024

A Fish-Like Underwater Miniature Robot Capable of High-Speed and Controllable Locomotion

RA-L 2024

This letter presents the design, fabrication, and performance test of a fish-like underwater miniature robot directly driven by two piezoelectric actuators. Considering the different medium conditions and the ever-present challenge of waterproofing in underwater motion, the miniaturization of underw

Cited by 12SourceScholar
2024

A Simple LLM Framework for Long-Range Video Question-Answering

EMNLP 2024main

We present LLoVi, a simple yet effective **L**anguage-based **Lo**ng-range **Vi**deo question-answering (LVQA) framework. Our method decomposes the short- and long-range modeling aspects of LVQA into two stages. First, we use a short-term visual captioner to generate textual descriptions of short vi…

2024

FPT: Feature Prompt Tuning for Few-shot Readability Assessment

NAACL 2024long

Prompt-based methods have achieved promising results in most few-shot text classification tasks. However, for readability assessment tasks, traditional prompt methods lack crucial linguistic knowledge, which has already been proven to be essential.Moreover, previous studies on utilizing linguistic f…

2024

SlimGPT: Layer-wise Structured Pruning for Large Language Models

NeurIPS 2024poster

Large language models (LLMs) have garnered significant attention for their remarkable capabilities across various domains, whose vast parameter scales present challenges for practical deployment. Structured pruning is an effective method to balance model performance with efficiency, but performance…

Cited by 2SourcePDFScholar
2024

Unleashing Large Language Models’ Proficiency in Zero-shot Essay Scoring

EMNLP 2024finding

Advances in automated essay scoring (AES) have traditionally relied on labeled essays, requiring tremendous cost and expertise for their acquisition. Recently, large language models (LLMs) have achieved great success in various tasks, but their potential is less explored in AES. In this paper, we sh…

Cited by 7SourcePDFScholar
2023

Towards Hierarchical Policy Learning for Conversational Recommendation with Hypergraph-based Reinforcement Learning

IJCAI 2023poster

Conversational recommendation systems (CRS) aim to timely and proactively acquire user dynamic preferred attributes through conversations for item recommendation. In each turn of CRS, there naturally have two decision-making processes with different roles that influence each other: 1) director, whic…

2023

Unified Coarse-to-Fine Alignment for Video-Text Retrieval

ICCV 2023poster

The canonical approach to video-text retrieval leverages a coarse-grained or fine-grained alignment between visual and textual information. However, retrieving the correct video according to the text query is often challenging as it requires the ability to reason about both high-level (scene) and lo…

Cited by 58PDFcodeScholar
2022

Focus-Driven Contrastive Learning for Medical Question Summarization

COLING 2022main

Automatic medical question summarization can significantly help the system to understand consumer health questions and retrieve correct answers. The Seq2Seq model based on maximum likelihood estimation (MLE) has been applied in this task, which faces two general problems: the model can not capture w…

Cited by 10SourcePDFScholar
2021

Learning Light-Weight Translation Models from Deep Transformer

AAAI 2021technical

Recently, deep models have shown tremendous improvements in neural machine translation (NMT). However, systems of this kind are computationally expensive and memory intensive. In this paper, we take a natural step towards learning strong but light-weight NMT systems. We proposed a novel group-permut…

2021

Weight Distillation: Transferring the Knowledge in Neural Network Parameters

ACL 2021long

Knowledge distillation has been proven to be effective in model acceleration and compression. It transfers knowledge from a large neural network to a small one by using the large neural network predictions as targets of the small neural network. But this way ignores the knowledge inside the large ne…

Cited by 26SourcePDFScholar