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

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arxiv 2409.20566 v1 pith:FTIYC7BT submitted 2024-09-30 cs.CV cs.CLcs.LG

classification cs.CVcs.CLcs.LG
keywords datatrainingunderstandingdesignedfine-tuninginsightsmodelmodels
verification ladder T0 review T1 audit T2 compute T3 formal
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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, systematically exploring the impact of diverse data mixtures across the entire model training lifecycle. This includes high-quality OCR data and synthetic captions for continual pre-training, as well as an optimized visual instruction-tuning data mixture for supervised fine-tuning. Our models range from 1B to 30B parameters, encompassing both dense and mixture-of-experts (MoE) variants, and demonstrate that careful data curation and training strategies can yield strong performance even at small scales (1B and 3B). Additionally, we introduce two specialized variants: MM1.5-Video, designed for video understanding, and MM1.5-UI, tailored for mobile UI understanding. Through extensive empirical studies and ablations, we provide detailed insights into the training processes and decisions that inform our final designs, offering valuable guidance for future research in MLLM development.

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Cited by 12 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

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    A GPT-4V/GPT-4o pipeline for completing and refining scene graph annotations yields a dense synthetic dataset that, after instruction tuning, gives a 3B model strong relationship understanding and grounding results.

  2. RefBench-PRO: Perceptual and Reasoning Oriented Benchmark for Referring Expression Comprehension

    cs.CV 2025-12 conditional novelty 6.0 of 10

    RefBench-PRO organizes REC into attribute, position, interaction, relation, commonsense, and reject tasks; no tested MLLM exceeds 72%, and Ref-R1 raises Qwen2.5-VL-7B from 57.6 to 69.4 on it.

  3. VIP: Visual Information Protection through Adversarial Attacks on Vision-Language Models

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    A perturbation computed from early attention and value matrices can make LLaVA, Instruct-BLIP, and BLIP2-T5 fail to detect objects inside a specified image region while keeping the rest of the image usable.

  4. MMReason: An Open-Ended Multi-Modal Multi-Step Reasoning Benchmark for MLLMs Toward AGI

    cs.AI 2025-06 conditional novelty 6.0 of 10

    MMReason is an open-ended multimodal reasoning benchmark that filters out guessable and memorized questions and scores model answers both by final answer and by intermediate steps.

  5. Modality Curation: Building Universal Embeddings for Advanced Multimodal Information Retrieval

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    UNITE combines curated multimodal training data and a modality-masked contrastive loss to achieve strong retrieval performance across text, image, and video tasks.

  6. UniGen: Enhanced Training & Test-Time Strategies for Unified Multimodal Understanding and Generation

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    UniGen shows a 1.5B model trained on open data can beat larger systems on image understanding and generation once it verifies its own outputs with chain-of-thought and Best-of-N selection.

  7. Granite Vision: a lightweight, open-source multimodal model for enterprise Intelligence

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    Granite Vision is a ~3B parameter open-weights vision-language model that reaches state-of-the-art scores on document understanding benchmarks despite its small size.

  8. MagicVL-2B: Empowering Vision-Language Models on Mobile Devices with Lightweight Visual Encoders via Curriculum Learning

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    MagicVL-2B is a 2B vision-language model for mobile phones that claims state-of-the-art-matching accuracy at 41.1% lower on-device power, via a lightweight encoder, dynamic resolution, and curriculum learning.

  9. Manager: Aggregating Insights from Unimodal Experts in Two-Tower VLMs and MLLMs

    cs.CV 2025-06 conditional novelty 5.0 of 10

    Manager aggregates multi-layer unimodal representations and improves both two-tower VLMs (ManagerTower) and MLLMs (LLaVA-OV-Manager) on 24 downstream tasks.

  10. TACO: Think-Answer Consistency for Optimized Long-Chain Reasoning and Efficient Data Learning via Reinforcement Learning in LVLMs

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    TACO couples thinking with final answers, filters unstable training samples, reweights easy or hard samples, and adds multi-scale test inference, improving LVLM visual reasoning accuracy over VLM-R1.

  11. Seeing Far and Clearly: Mitigating Hallucinations in MLLMs with Attention Causal Decoding

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    FarSight adds upper-triangular negative biases to the causal mask to absorb outlier-token attention, reducing hallucinations in MLLMs without training.

  12. Generalizing vision-language models to novel domains: A comprehensive survey

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    A survey of VLM generalization literature organized by transferred module, with benchmark tables and a review of multimodal LLMs.

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