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Md Tahmid Rahman Laskar

York University

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#natural language process... Preprint Sep 2026

Can One Adapted Model Do It All? Fine-Tuning Strategy Selection for Customer Support LLMs

This work studies whether task-specialist models should be handled by separate task-specialist models or by a single model trained through multi-task training, sequential updates, or model merging, and concludes with practical guidelines for selecting fine-tuning strategies in real-world settings.

Md Tahmid Rahman Laskar, Xue-Yong Fu, TN ShashiBhushan · 0 citations
#natural language process... Preprint Sep 2026

When Better Turns Do Not Make Better Agents: Diagnosing the Gap Between Next-Turn Metrics and Workflow Success

It is found that SFT consistently improves text-turn success, and that overall next-turn success increases for every model under gold-history evaluation, but these improvements do not transfer to autonomous workflow execution.

Md Tahmid Rahman Laskar, Xue-Yong Fu, Gundeep Singh et al. · 1 citation · ⚡1
#natural language process... Preprint Sep 2026

SFT or RL for Tool-Calling Agents? A Controlled Study Across Data, Method, and Scale

Limited controlled evidence exists on how training data, adaptation method, and model scale jointly affect tool-calling performance in language-model agents. We evaluate supervised fine-tuning (SFT) with LoRA, reinforcement learning (RL) via Group Relative Policy Optimization (GRPO), and SFT followed by GRPO across six...

Md Tahmid Rahman Laskar, Xue-Yong Fu, TN ShashiBhushan · 0 citations
Preprint Aug 2026

VisEditBench: Can Vision-Language Models Edit Visualization Code from Multimodal Feedback?

This work introduces VisEditBench, a benchmark of 1,395 human-annotated visualization code-editing tasks grounded in realistic visualization workflows and failure cases, and proposes VisEditAgent, a render-grounded editing framework that iteratively generates, executes, validates, and refines candidate edits.

Mizanur Rahman, Arshia Azimlu, Shadikur Rahman et al. · 3 citations · ⚡1
#machine learning Preprint Sep 2026

Routing Is Not Enough: Diagnosing Intra-Adapter Subspace Contention in MoE+LoRA Fine-Tuning

SpawnLoRA is evaluated on Phi-tiny-MoE-instruct and OLMoE-1B-7B across multiple mixture settings and finds that it effectively reduces negative transfer compared with standard and rank-adaptive LoRA, demonstrating that structural separation inside experts provides benefits beyond routing or rank expansion alone.

Mehreen Hossain Chowdhury, Nowshin Mahjabin, Ahmed Shafin Ruhan et al. · 0 citations
#computer vision Preprint Sep 2026

MemeCULT-1K: Benchmarking South Asian Cultural Context and Humor Understanding of Multimodal Models

This work introduces MemeCULT-1K, a multilingual benchmark of 1,000 South Asian memes in Bengali, English, and Hindi, where each meme is paired with a cultural context note and three human-written explanations, along with a supplementary set of 54 Bengali regional dialect memes.

Tawsif Tashwar Dipto, Mehedi Ahamed, Radib Bin Kabir et al. · 0 citations
Preprint Aug 2026

DSAgentBench: Can Agents Automate End-to-End Data-Science Workflows in Real Computer Environments?

DSAgentBench is introduced, the first benchmark to evaluate whether agents can automate full data-science workflows inside real computer environments, and reveals a substantial capability gap between current agentic systems and real data-science workflows.

Mizanur Rahman, Mohammed Saidul Islam, Ridwan Mahbub et al. · 0 citations

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