Dibaloke Chanda

Dibaloke Chanda

Graduate student · Computer Science

Marquette University

Milwaukee, Wisconsin

A little about me

I’m a graduate student in the Computer Science department at Marquette University, working at the intersection of machine learning, computational pathology, and model interpretability.

My interests include foundation models, unsupervised pre-training, generative AI, large language models, and adversarial attacks. I’m drawn to the question of what models learn—and how we can make sense of it.

Previously, I was a lecturer in the Electrical, Electronic, and Communication Engineering department at MIST. Teaching continues to shape how I approach research: work through the details, connect the ideas, and share what I learn.

Current chapter

Graduate studies

Marquette University

Research focus

Vision & interpretable AI

Foundation models · Computational pathology

Follow my experience

I study multimodal and agentic AI in computational pathology. My research explores how we can make these systems interpretable, analyze uncertainty in their predictions, understand their vulnerabilities, and learn from complex data.

Computational pathologyExplainable AIGraph learning

Selected Publications

All 17 publications

CThoughtPathNet: Expert-Guided Vision–Language Reasoning for Few-Shot Cancer Subtyping in Whole-Slide Pathology

Journal · 2027Under review

Expert-guided vision–language reasoning for few-shot cancer subtyping in whole-slide pathology.

  • Big idea: Use domain-specific expert roles and model-generated reasoning to guide few-shot cancer subtyping from whole-slide images.
  • Method: Combine four expert-role prompts and reasoning-informed text embeddings with 10×/20× visual features using learned patch prototypes and cross-attention.
  • Finding: Under the 16-shot, five-fold protocol, the best reported configurations achieve AUC 0.9604 ± 0.0088 on TCGA-RCC and 0.8770 ± 0.0195 on TCGA-NSCLC (mean ± standard deviation), outperforming the 20 evaluated MIL baselines.
  • Impact: Shows how expert-derived language and multi-scale visual evidence can support cancer subtyping with limited labeled slides; benefits depend on the chosen encoder and prompting configuration.

Authors

Dibaloke Chanda, Nasim Yahya Soltani, Masoud Ganji

Publication

IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI)

Research themes

Computational pathologyVision–language reasoningFew-shot learningCancer subtyping

INVEX: Label-Free Pathology Foundation Model Ranking via Invariance and Expressiveness

Conference · 2026Accepted

Ranking pathology foundation models without labels using invariance and expressiveness.

  • Big idea: Rank pathology foundation models without labels, fine-tuning, or training a downstream predictor.
  • Method: Combine rotational invariance with representation expressiveness, using a standardized score based on neighborhood retention and effective rank.
  • Finding: Across 22 encoders and 16 datasets containing over 1.2 million patches, ranking agreement reaches Spearman correlations of 0.749 with a linear oracle and 0.683 with a kNN oracle.
  • Impact: Provides an annotation-free way to shortlist encoders before investing in task-specific evaluation.

Authors

Dibaloke Chanda, Praveen Madiraju

Publication

IEEE International Conference on Big Data (IEEE BigData)

Research themes

Foundation modelsModel rankingLabel-free evaluationComputational pathology

Explore the work

MOSAIC: Towards a Universal Latent Space for Computational Pathology Foundation Models

Conference · 2027Accepted

Exploring a universal latent space for computational pathology foundation models.

  • Big idea: Test whether independently trained pathology models can share a useful latent representation despite incompatible native embedding spaces.
  • Method: Compare 18 patch- and slide-level encoders across 4,331 TCGA/CPTAC slides, using similarity analysis, multiview alignment, retrieval, and 13 downstream tasks.
  • Finding: Shared-space features improve selected molecular tasks, including BRCA GATA3 AUC from approximately 0.55 to 0.63, while underperforming on some other targets.
  • Impact: Supports cross-model interoperability while showing that geometric alignment does not guarantee better performance on every pathology task.

Authors

Dibaloke Chanda, Praveen Madiraju

Publication

IEEE/CVF Winter Conference on Applications of Computer Vision (WACV)

Research themes

Computational pathologyFoundation modelsLatent representations

Explore the work

MERI-VL-MIL: Multi-Expert Reasoning-Informed Vision-Language Multi-Instance Learning for Few-Shot Cancer Subtyping

Conference · 2026

Multi-expert reasoning-informed vision–language multi-instance learning for few-shot cancer subtyping.

  • Big idea: Use multiple expert perspectives and model-generated reasoning to enrich language guidance for few-shot cancer subtyping.
  • Method: Prompt three multimodal language models as four diagnostic experts, encode their responses and reasoning, and fuse the pooled embeddings with 10×/20× whole-slide features.
  • Finding: On TCGA lung subtyping, GPT-5 with mean pooling reports 71.6% mean accuracy (standard deviation 23.1 percentage points) across five runs; pooled experts outperform individual experts.
  • Impact: Shows how complementary expert-derived language can guide visual multiple-instance learning when labeled slides are limited.

Authors

Dibaloke Chanda, Nasim Yahya Soltani, Masoud Ganji

Publication

Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

Research themes

Multi-instance learningVision–language modelsFew-shot learningCancer subtyping

Explore the work

A New Era in Computational Pathology: A Survey on Foundation and Vision-Language Models

Journal · 2026

A survey of foundation models and vision-language models in computational pathology.

  • Big idea: Map the shift from task-specific pathology models toward reusable foundation and vision-language models.
  • Method: Organize the literature into vision foundation models, vision-language models, multimodal datasets, and benchmarking and adaptation approaches.
  • Synthesis: Connects model development with supporting datasets, evaluation frameworks, prompting, and vision-instruction tuning in a unified research timeline.
  • Impact: Provides a guide for navigating pathology models and datasets and understanding how the research directions fit together.

Authors

Dibaloke Chanda, Milan Aryal, Masoud Ganji, Anil Parwani, Nasim Yahya Soltani

Publication

Journal of Pathology Informatics

Research themes

Computational pathologyFoundation modelsVision-language models

Explore the work

Explainability-Based Adversarial Attack on Graphs Through Edge Perturbation

Journal · 2025

An explainability-based approach to adversarial attacks on graphs through edge perturbation.

  • Big idea: Explanations of a graph neural network's predictions can reveal which parts of the graph an adversary should target.
  • Method: Use GNNExplainer and PGExplainer to identify important subgraphs, then perturb graph edges to construct adversarial test samples.
  • Finding: Explanation-guided attacks can avoid complex attack optimization and training-time model access by exploiting information from a trained model.
  • Impact: Reveals a security tradeoff in model transparency and motivates evaluating explainability alongside adversarial robustness.

Authors

Dibaloke Chanda, Saba Heidari Gheshlaghi, Nasim Yahya Soltani

Publication

Knowledge-Based Systems

Research themes

ExplainabilityAdversarial attacksGraph learningEdge perturbation

A Heterogeneous Graph-Based Multi-Task Learning for Fault Event Diagnosis in Smart Grid

Journal · 2025

Heterogeneous graph-based multi-task learning for diagnosing fault events in smart grids.

  • Big idea: Diagnose multiple aspects of a smart-grid fault together using the network's graph structure.
  • Method: A shared heterogeneous graph encoder feeds task-specific classification and regression heads, trained with a combined multi-task objective.
  • Outputs: Jointly addresses fault detection, fault-type classification, and localization alongside fault-resistance and current estimation.
  • Impact: Connects whether, what, and where a fault occurs with estimates of its electrical characteristics for a more complete diagnosis.

Authors

Dibaloke Chanda, Nasim Yahya Soltani

Publication

IEEE Transactions on Power Systems

Research themes

Heterogeneous graphsMulti-task learningFault diagnosisSmart grids

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Selected Projects

Retrieval-augmented generation

RAGViz

An interactive map of vanilla RAG, GraphRAG variants, and agentic retrieval, with stage-by-stage explanations, worked mathematics, and code examples.

RAGGraphRAGAgents
Explore project

Language model internals

LLMViz

A visual guide to the design choices inside language models. Explore the forward pass, compare architecture families, and trace real model configurations through the design space.

LLMsTransformersArchitecture
Explore project

Reinforcement learning

RL Cheatsheet

An interactive explorer of reinforcement learning concepts and algorithm families, bringing together a navigable taxonomy, equations, notation, and visual comparisons.

Reinforcement learningAlgorithmsEquations
Explore project

Computational pathology

Pathology Foundation Models

An interactive catalog of pathology foundation models, organized by model family and application, with summaries of pretraining data, key ideas, and links to papers, code, and model releases.

Foundation modelsVision-languageModel taxonomy
Explore project

Agents & computational pathology

Agentic AI in Computational Pathology

An interactive catalog of pathology agents and copilots, covering diagnostic reasoning, slide navigation, multi-agent systems, tool use, and evaluation, with links to the underlying research.

Agentic AIComputational pathologyResearch catalog
Explore project

Whole-slide pathology benchmarking

FM-Bench

200 TB+ of WSI data processed, with inventories spanning 39 WSI datasets and 20 patch-level datasets across diverse organs and pathology tasks.

200 TB+ processed39 WSI datasets20 patch datasets
Explore project

Along the way

News & milestones.

ICASSP 2026

MERI-VL-MIL at ICASSP 2026 MERI-VL-MIL: Multi-Expert Reasoning-Informed Vision-Language Multi-Instance Learning for Few-Shot Cancer Subtyping

Earlier milestones

Paper accepted to IEEE GLOBECOM 2024A Graph Motif Adversarial Attack for Fault Detection in Power Distribution Systems.