Sai Rajeswar
Author directory2026
AU-Harness: An Open-Source Toolkit for Efficient and Unified Evaluation of AudioLLMs
Hoang H Nguyen | Sidharth Surapaneni | Akshay Kalkunte Suresh | Jash Mehta | Aman Tiwari | Oluwanifemi Bamgbose | Khyati Mahajan | Jash Shah | Shruthan Radhakrishna | Sathwik Tejaswi Madhusudhan | Vikas Yadav | Sai Rajeswar
Findings of the Association for Computational Linguistics: EMNLP 2026
Hoang H Nguyen | Sidharth Surapaneni | Akshay Kalkunte Suresh | Jash Mehta | Aman Tiwari | Oluwanifemi Bamgbose | Khyati Mahajan | Jash Shah | Shruthan Radhakrishna | Sathwik Tejaswi Madhusudhan | Vikas Yadav | Sai Rajeswar
Findings of the Association for Computational Linguistics: EMNLP 2026
Large Audio Language Models (LALMs) are rapidly advancing, but evaluating them remains challenging due to inefficient and non-standardized toolkits that limit fair comparison and systematic assessment. Existing evaluation frameworks exhibit three critical limitations: (1) slow and inefficient processing pipeline that bottlenecks large-scale studies, (2) inadequate multi-turn dialogue support, leaving fundamental questions about cross-turn context integration and performance dynamics over extended conversations in LALMs unanswered; and (3) the absence of unified and scalable evaluation framework capable of keeping pace with the rapid growth of both LALMs and audio benchmarks. To address these issues, we introduce **AU-Harness**, an efficient and comprehensive evaluation framework for LALMs. Our empirical studies demonstrate that AU-Harness achieves 77% reduction in evaluation processing time over existing evaluation toolkits, enabling large-scale LALM evaluations previously considered impractical. We provide standardized evaluation protocols and flexible configurations for fair model comparison across diverse scenarios. AU-Harness unlocks a range of in-depth analyses difficult to conduct without a unified foundation, including multi-turn dialogue dynamics, enabling the study of true audio reasoning capabilities in existing LALMs. AU-Harness provides both practical evaluation tools and insights into model limitations, advancing systematic LALM development.
VectorGym: A Multi-Task Benchmark for SVG Code Generation, Sketching and Editing
Joan Rodriguez | Haotian Zhang | Abhay Puri | Haoran Dai | Tianyang Zhang | Meng Lin | Rishav Pramanik | Xiaoqing Xie | Marco Terral Rodriguez | Darsh Kaushik | Aly Shariff | Sai Rajeswar | Perouz Taslakian | Spandana Gella | David Vazquez | Christopher Pal | Marco Pedersoli
Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing
Joan Rodriguez | Haotian Zhang | Abhay Puri | Haoran Dai | Tianyang Zhang | Meng Lin | Rishav Pramanik | Xiaoqing Xie | Marco Terral Rodriguez | Darsh Kaushik | Aly Shariff | Sai Rajeswar | Perouz Taslakian | Spandana Gella | David Vazquez | Christopher Pal | Marco Pedersoli
Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing
We introduce VectorGym, a comprehensive benchmark suite for Scalable Vector Graphics (SVG) that spans generation from text and sketches, complex editing, and visual understanding. VectorGym addresses the lack of realistic, challenging benchmarks aligned with professional design workflows. Our benchmark comprises four tasks with expert human-authored annotations: the novel Sketch2SVG task (VG-Sketch); a new SVG editing dataset (VG-Edit) featuring complex, multi-step edits with higher-order primitives; Text2SVG generation (VG-Text); and SVG captioning (VG-Cap). Unlike prior benchmarks that rely on synthetic edits, VectorGym provides gold-standard human annotations that require semantic understanding and design intent. We also provide a multi-task reinforcement learning baseline that jointly optimizes across all four tasks using rendering-based rewards. This baseline, built on GRPO with curriculum learning, trains a Qwen3-VL 8B model that achieves state-of-the-art performance among open-source models, surpassing much larger models including Qwen3-VL 235B and matching GPT-4o. We also introduce a VLM-as-a-Judge metric for SVG generation, validated through human correlation studies. Our evaluation of frontier VLMs reveals significant performance gaps, positioning VectorGym as a rigorous framework for advancing visual code generation.
StarFlow: Generating Structured Workflow Outputs From Sketch Images
Patrice Bechard | Chao Wang | Amirhossein Abaskohi | Juan A. Rodriguez | Christopher Pal | David Vazquez | Spandana Gella | Sai Rajeswar | Perouz Taslakian
Proceedings of the 19th Conference of the European Chapter of the Association for Computational Linguistics (Volume 1: Long Papers)
Patrice Bechard | Chao Wang | Amirhossein Abaskohi | Juan A. Rodriguez | Christopher Pal | David Vazquez | Spandana Gella | Sai Rajeswar | Perouz Taslakian
Proceedings of the 19th Conference of the European Chapter of the Association for Computational Linguistics (Volume 1: Long Papers)
Workflows are a fundamental component of automation in enterprise platforms, enabling the orchestration of tasks, data processing, and system integrations. Despite being widely used, building workflows can be complex, often requiring manual configuration through low-code platforms or visual programming tools. To simplify this process, we explore the use of generative foundation models, particularly vision-language models (VLMs), to automatically generate structured workflows from visual inputs. Translating hand-drawn sketches or computer-generated diagrams into executable workflows is challenging due to the ambiguity of free-form drawings, variations in diagram styles, and the difficulty of inferring execution logic from visual elements. To address this, we introduce StarFlow, a framework for generating structured workflow outputs from sketches using vision-language models. We curate a diverse dataset of workflow diagrams – including synthetic, manually annotated, and real-world samples – to enable robust training and evaluation. We finetune and benchmark multiple vision-language models, conducting a series of ablation studies to analyze the strengths and limitations of our approach. Our results show that finetuning significantly enhances structured workflow generation, outperforming large vision-language models on this task.
Grammar Search for Multi-Agent Systems
Mayank Singh | Vikas Yadav | Shiva Krishna Reddy Malay | Shravan Nayak | Sai Rajeswar | Sathwik Tejaswi Madhusudhan | Eduardo Blanco
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Mayank Singh | Vikas Yadav | Shiva Krishna Reddy Malay | Shravan Nayak | Sai Rajeswar | Sathwik Tejaswi Madhusudhan | Eduardo Blanco
Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Automatic search for Multi-Agent Systems has recently emerged as a key focus in agentic AI research. Several prior approaches have relied on LLM-based free-form search over the code space. In this work, we propose a more structured framework that explores the same space through a fixed set of composable components. We show that, despite lacking the generative flexibility of LLMs during the candidate generation stage, our method outperforms prior approaches on a majority of evaluated benchmarks across two backbone LLMs and two domains: mathematics and question answering. Furthermore, our method offers additional advantages, including a more cost-efficient search process and the generation of modular, interpretable multi-agent systems.
2025
WebMMU: A Benchmark for Multimodal Multilingual Website Understanding and Code Generation
Rabiul Awal | Mahsa Massoud | Aarash Feizi | Zichao Li | Suyuchen Wang | Christopher Pal | Aishwarya Agrawal | David Vazquez | Siva Reddy | Juan A. Rodriguez | Perouz Taslakian | Spandana Gella | Sai Rajeswar
Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing
Rabiul Awal | Mahsa Massoud | Aarash Feizi | Zichao Li | Suyuchen Wang | Christopher Pal | Aishwarya Agrawal | David Vazquez | Siva Reddy | Juan A. Rodriguez | Perouz Taslakian | Spandana Gella | Sai Rajeswar
Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing
We present WebMMU, a multilingual benchmark that evaluates three core web tasks: (1) website visual question answering, (2) code editing involving HTML/CSS/JavaScript, and (3) mockup-to-code generation. Unlike prior benchmarks that treat these tasks separately, WebMMU unifies them using expert-annotated, real-world web data to assess models’ abilities in complex multi-step reasoning, precise element grounding, and functional UI comprehension and coding. Our evaluation shows that while multimodal large language models (MLLMs) perform well on basic information extraction, they struggle with reasoning and grounding, editing code to preserve functionality, and generating design-to-code that maintains hierarchy and supports multilingual content. These findings reveal key limitations in current MLLMs and underscore the need for improved multimodal and cross-lingual reasoning to build future web agents capable of automating diverse web development tasks.
ColMate: Contrastive Late Interaction and Masked Text for Multimodal Document Retrieval
Ahmed Masry | Megh Thakkar | Patrice Bechard | Sathwik Tejaswi Madhusudhan | Rabiul Awal | Shambhavi Mishra | Akshay Kalkunte Suresh | Srivatsava Daruru | Enamul Hoque | Spandana Gella | Torsten Scholak | Sai Rajeswar
Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing: Industry Track
Ahmed Masry | Megh Thakkar | Patrice Bechard | Sathwik Tejaswi Madhusudhan | Rabiul Awal | Shambhavi Mishra | Akshay Kalkunte Suresh | Srivatsava Daruru | Enamul Hoque | Spandana Gella | Torsten Scholak | Sai Rajeswar
Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing: Industry Track
Retrieval-augmented generation has proven practical when models require specialized knowledge or access to the latest data. However, existing methods for multimodal document retrieval often replicate techniques developed for text-only retrieval, whether in how they encode documents, define training objectives, or compute similarity scores. To address these limitations, we present ColMate, a document retrieval model that bridges the gap between multimodal representation learning and document retrieval. ColMate utilizes a novel OCR-based pretraining objective, a self-supervised masked contrastive learning objective, and a late interaction scoring mechanism more relevant to multimodal document structures and visual characteristics. ColMate obtains 3.61% improvements over existing retrieval models on the ViDoRe V2 benchmark, demonstrating stronger generalization to out-of-domain benchmarks.
2017
Adversarial Generation of Natural Language
Sandeep Subramanian | Sai Rajeswar | Francis Dutil | Chris Pal | Aaron Courville
Proceedings of the 2nd Workshop on Representation Learning for NLP
Sandeep Subramanian | Sai Rajeswar | Francis Dutil | Chris Pal | Aaron Courville
Proceedings of the 2nd Workshop on Representation Learning for NLP
Generative Adversarial Networks (GANs) have gathered a lot of attention from the computer vision community, yielding impressive results for image generation. Advances in the adversarial generation of natural language from noise however are not commensurate with the progress made in generating images, and still lag far behind likelihood based methods. In this paper, we take a step towards generating natural language with a GAN objective alone. We introduce a simple baseline that addresses the discrete output space problem without relying on gradient estimators and show that it is able to achieve state-of-the-art results on a Chinese poem generation dataset. We present quantitative results on generating sentences from context-free and probabilistic context-free grammars, and qualitative language modeling results. A conditional version is also described that can generate sequences conditioned on sentence characteristics.
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Co-authors
- Spandana Gella 4
- Christopher Pal 4
- Sathwik Tejaswi Madhusudhan 3
- Perouz Taslakian 3
- David Vazquez 3
- Rabiul Awal 2
- Patrice Béchard 2
- Juan A. Rodriguez 2
- Akshay Kalkunte Suresh 2
- Vikas Yadav 2
- Amirhossein Abaskohi 1
- Aishwarya Agrawal 1
- Oluwanifemi Bamgbose 1
- Eduardo Blanco 1
- Aaron Courville 1
- Haoran Dai 1
- Srivatsava Daruru 1
- Francis Dutil 1
- Aarash Feizi 1
- Enamul Hoque 1
- Darsh Kaushik 1
- Zichao Li 1
- Meng Lin 1
- Khyati Mahajan 1
- Shiva Krishna Reddy Malay 1
- Ahmed Masry 1
- Mahsa Massoud 1
- Jash Mehta 1
- Shambhavi Mishra 1
- Shravan Nayak 1
- Hoang H Nguyen 1
- Marco Pedersoli 1
- Rishav Pramanik 1
- Abhay Puri 1
- Shruthan Radhakrishna 1
- Siva Reddy 1
- Joan Rodriguez 1
- Marco Terral Rodriguez 1
- Torsten Scholak 1
- Jash Shah 1
- Aly Shariff 1
- Mayank Singh 1
- Sandeep Subramanian 1
- Sidharth Surapaneni 1
- Megh Thakkar 1
- Aman Tiwari 1
- Chao Wang 1
- Suyuchen Wang 1
- Xiaoqing Xie 1
- Haotian Zhang 1
- Tianyang Zhang 1