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Xianzhi Du

19 accepted papers

2026

Adaptive Thinking: Large Language Models Know When to Think in Latent Space

ICLR 2026poster

Recent advances in large language models (LLMs) test-time computing have introduced the capability to perform intermediate chain-of-thought (CoT) reasoning (thinking) before generating answers. While increasing the thinking budget yields smooth performance improvements at inference time, the relatio…

Cited by 0SourceScholar
2026

MANZANO: A Simple and Scalable Unified Multimodal Model with a Hybrid Vision Tokenizer

ICLR 2026poster

Unified multimodal Large Language Models (LLMs) that can both understand and generate visual content hold immense potential. However, existing open-source models often suffer from a performance trade-off between these capabilities. We present Manzano, a simple and scalable unified framework that sub…

Cited by 0SourceScholar
2025

CLIP-UP: A Simple and Efficient Mixture-of-Experts CLIP Training Recipe with Sparse Upcycling

EMNLP 2025

Mixture-of-Experts (MoE) models are crucial for scaling model capacity while controlling inference costs. While integrating MoE into multimodal models like CLIP improves performance, training these models is notoriously challenging and expensive. We propose CLIP-Upcycling (CLIP-UP), an efficient alt

Cited by 0SourcePDFScholar
2025

MM1.5: Methods, Analysis & Insights from Multimodal LLM Fine-tuning

ICLR 2025poster

We present MM1.5, a new family of multimodal large language models (MLLMs) designed to enhance capabilities in text-rich image understanding, visual referring and grounding, and multi-image reasoning. Building upon the MM1 architecture, MM1.5 adopts a data-centric approach to model training, systema…

Cited by 29SourcePDFScholar
2024

"MM1: Methods, Analysis & Insights from Multimodal LLM Pre-training"

ECCV 2024poster

"In this work, we discuss building performant Multimodal Large Language Models (MLLMs). In particular, we study the importance of various architecture components and data choices. Through careful and comprehensive ablations of the image encoder, the vision language connector, and various pre-trainin…

2024

Compressing LLMs: The Truth is Rarely Pure and Never Simple

ICLR 2024poster

Despite their remarkable achievements, modern Large Language Models (LLMs) encounter exorbitant computational and memory footprints. Recently, several works have shown significant success in *training-free* and *data-free* compression (pruning and quantization) of LLMs achieving 50-60\% sparsity an…

2024

Ferret: Refer and Ground Anything Anywhere at Any Granularity

ICLR 2024spotlight

We introduce Ferret, a new Multimodal Large Language Model (MLLM) capable of understanding spatial referring of any shape or granularity within an image and accurately grounding open-vocabulary descriptions. To unify referring and grounding in the LLM paradigm, Ferret employs a novel and powerful hy…

2024

Guiding Instruction-based Image Editing via Multimodal Large Language Models

ICLR 2024spotlight

Instruction-based image editing improves the controllability and flexibility of image manipulation via natural commands without elaborate descriptions or regional masks. However, human instructions are sometimes too brief for current methods to capture and follow. Multimodal large language models (M…

2024

MOFI: Learning Image Representations from Noisy Entity Annotated Images

ICLR 2024poster

We present MOFI, Manifold OF Images, a new vision foundation model designed to learn image representations from noisy entity annotated images. MOFI differs from previous work in two key aspects: 1. pre-training data, and 2. training recipe. Regarding data, we introduce a new approach to automaticall…

2024

VeCLIP: Improving CLIP Training via Visual-enriched Captions

ECCV 2024poster

"Large-scale web-crawled datasets are fundamental for the success of pre-training vision-language models, such as CLIP. However, the inherent noise and potential irrelevance of web-crawled AltTexts pose challenges in achieving precise image-text alignment. Existing methods utilizing large language m…

2023

AdaMV-MoE: Adaptive Multi-Task Vision Mixture-of-Experts

ICCV 2023poster

Sparsely activated Mixture-of-Experts (MoE) is becoming a promising paradigm for multi-task learning (MTL). Instead of compressing multiple tasks' knowledge into a single model, MoE separates the parameter space and only utilizes the relevant model pieces given task type and its input, which provide…

Cited by 55PDFcodeScholar
2022

A Simple Single-Scale Vision Transformer for Object Detection and Instance Segmentation

ECCV 2022poster

"This work presents a simple vision transformer design as a strong baseline for object localization and instance segmentation tasks. Transformers recently demonstrate competitive performance in image classification tasks. To adopt ViT to object detection and dense prediction tasks, many works inheri…

Cited by 65SourcePDFScholar
2022

Auto-scaling Vision Transformers without Training

ICLR 2022poster

This work targets automated designing and scaling of Vision Transformers (ViTs). The motivation comes from two pain spots: 1) the lack of efficient and principled methods for designing and scaling ViTs; 2) the tremendous computational cost of training ViT that is much heavier than its convolution co…

2022

Back Razor: Memory-Efficient Transfer Learning by Self-Sparsified Backpropagation

NeurIPS 2022accept

Transfer learning from the model trained on large datasets to customized downstream tasks has been widely used as the pre-trained model can greatly boost the generalizability. However, the increasing sizes of pre-trained models also lead to a prohibitively large memory footprints for downstream tran…

2022

Provable Stochastic Optimization for Global Contrastive Learning: Small Batch Does Not Harm Performance

ICML 2022spotlight

In this paper, we study contrastive learning from an optimization perspective, aiming to analyze and address a fundamental issue of existing contrastive learning methods that either rely on a large batch size or a large dictionary of feature vectors. We consider a global objective for contrastive le…

2021

Revisiting ResNets: Improved Training and Scaling Strategies

NeurIPS 2021spotlight

Novel computer vision architectures monopolize the spotlight, but the impact of the model architecture is often conflated with simultaneous changes to training methodology and scaling strategies. Our work revisits the canonical ResNet and studies these three aspects in an effort to disentangle them.…

2020

Efficient Scale-Permuted Backbone with Learned Resource Distribution

ECCV 2020poster

Recently, SpineNet has demonstrated promising results on object detection and image classification over ResNet model. However, it is unclear if the improvement adds up when combining scale-permuted backbone with advanced efficient operations and compound scaling. Furthermore, SpineNet is built with…

Cited by 4SourcePDFScholar
2020

SpineNet: Learning Scale-Permuted Backbone for Recognition and Localization

CVPR 2020poster

Convolutional neural networks typically encode an input image into a series of intermediate features with decreasing resolutions. While this structure is suited to classification tasks, it does not perform well for tasks requiring simultaneous recognition and localization (e.g., object detection). T…

Cited by 259PDFcodeScholar