Papers by Juan Carlos Niebles

6 papers
ActionStudio: A Lightweight Framework for Data and Training of Large Action Models (2025.emnlp-main)

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Challenge: Existing infrastructure for efficient agentic data processing and model training remains underdeveloped.
Approach: They propose a lightweight and extensible data and training framework for large action models . they propose to unify diverse agent trajectories using Unified Format 2.0 .
Outcome: The proposed framework shows 9 higher throughput than existing frameworks and performs well across public and realistic agent benchmarks.
Translating Navigation Instructions in Natural Language to a High-Level Plan for Behavioral Robot Navigation (D18-1)

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Challenge: Existing models for translating free-form natural language instructions to a high-level plan for behavioral robot navigation are difficult due to the variability in the way people describe routes.
Approach: They propose an end-to-end deep learning model for translating free-form natural language instructions to a high-level plan for robot navigation.
Outcome: The proposed model significantly outperforms baseline approaches on a new dataset containing 10,050 pairs of navigation instructions.
LAM SIMULATOR: Advancing Data Generation for Large Action Model Training via Online Exploration and Trajectory Feedback (2025.findings-acl)

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Challenge: Large Action Models (LAMs) face challenges due to the need for high-quality training data, especially for multi-steps tasks that involve planning, executing tool calls, and responding to feedback.
Approach: They propose a framework for online exploration of agentic tasks with high-quality feedback . they use a dynamic task query generator and an extensive collection of tools to create a high-level feedback environment for LLM Agents.
Outcome: The proposed framework achieves 49.3% performance improvement over baselines on toolbench and CRMArena.
Contra4: Evaluating Contrastive Cross-Modal Reasoning in Audio, Video, Image, and 3D (2025.emnlp-main)

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Challenge: a recent study shows that multimodal models can reason across multiple modalities . a limited number of models are able to reason across a variety of inputs .
Approach: They propose a dataset for contrastive cross-modal reasoning across four modalities . they use human annotations and a mixture-of-models round-trip-consistency filter .
Outcome: a new model evaluates models on multiple modalities to determine which one best answers a natural language prompt . the model must select the one that best satisfies the query and then fine-tune it . state-of-the-art models still achieve only 56% accuracy overall and 42% in four-modal settings .
LATTE: Learning to Think with Vision Specialists (2025.emnlp-main)

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Challenge: Open-source vision-language models excel on simple question-answering tasks, but struggle with complex questions that require both perception and reasoning.
Approach: They propose a family of vision-language models that have LeArned to Think wiTh vision spEcialists by offloading perception to state-of-the-art vision models.
Outcome: The proposed model achieves 4-5% gains over baselines across 6 benchmarks covering both perception and reasoning abilities.
xLAM: A Family of Large Action Models to Empower AI Agent Systems (2025.naacl-long)

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Challenge: Autonomous agents powered by large language models (LLMs) have attracted significant research interest, but there are few standards for developing specialized models for agent tasks.
Approach: They propose a series of large action models with dense and mixture-of-expert architectures that unifies, augments, and synthesizes diverse datasets to enhance agent generalizability and performance.
Outcome: The proposed models outperform GPT-4, Claude-3, and many other models in terms of tool use and outperformed GPT-based models on multiple agent ability benchmarks.

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