Behind the Magic, MERLIM: Multi-modal Evaluation Benchmark for Large Image-Language Models

• URL: http://arxiv.org/abs/2312.02219v2
• Date: Wed, 12 Jun 2024 14:59:55 GMT
• Title: Behind the Magic, MERLIM: Multi-modal Evaluation Benchmark for Large Image-Language Models
• Authors: Andrés Villa, Juan Carlos León Alcázar, Alvaro Soto, Bernard Ghanem,
• Abstract summary: This paper introduces a scalable test-bed to assess the capabilities of IT-LVLMs on fundamental computer vision tasks. MERLIM contains over 300K image-question pairs and has a strong focus on detecting cross-modal "hallucination" events in IT-LVLMs.
• Score: 50.653838482083614
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large Vision and Language Models have enabled significant advances in fully supervised and zero-shot visual tasks. These large architectures serve as the baseline to what is currently known as Instruction Tuning Large Vision and Language models (IT-LVLMs). IT-LVLMs are general-purpose multi-modal assistants whose responses are modulated by natural language instructions and visual data. Despite this versatility, IT-LVLM effectiveness in fundamental computer vision problems remains unclear, primarily due to the absence of a standardized evaluation benchmark. This paper introduces a Multi-modal Evaluation Benchmark named MERLIM, a scalable test-bed to assess the capabilities of IT-LVLMs on fundamental computer vision tasks. MERLIM contains over 300K image-question pairs and has a strong focus on detecting cross-modal "hallucination" events in IT-LVLMs. Our results bring important insights on the performance of state-of-the-art IT-LVMLs including limitations at identifying fine-grained visual concepts, object hallucinations across tasks, and biases towards the language query. Our findings also suggest that these models have weak visual grounding, but manage to make adequate guesses from global visual patterns or language biases contained in the LLM component.

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