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Indian Institute of Management, Ahmedabad

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Research library12linked papers
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Selected work

Representative Papers

Learning Auditable Classifier Models: Source-Disjoint Tree Ensembles

Aug 16, 2026

This study addresses the challenges of auditing tree-based models and the limited expressiveness of interpretable alternatives in regulated domains by proposing RPTE, a three-stage learning framework. By leveraging source-disjoint constraints and separated coefficient estimation, RPTE constructs sparse models decomposable into sums of named rule contributions, thereby ensuring inherent auditability by design. Evaluated across twelve clinical benchmarks, RPTE achieves accuracy comparable to mainstream ensemble methods while reducing audit units by 9 to 87 times relative to XGBoost and maintaining lower complexity than Explainable Boosting Machines (EBM). Consequently, this approach effectively reconciles high predictive performance with low auditing costs and strong interpretability, offering a viable solution for high-stakes applications where model transparency and regulatory compliance are paramount.

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Designing Compact Neural Architectures via Neuron Gating and Mixed Activation

Aug 14, 2026

This study addresses the computational expense and trade-offs between compactness and performance in neural architecture search by proposing a general bilevel optimization framework. Through three scalable continuous relaxation formulations, discrete decisions are transformed into differentiable problems, enabling efficient architecture search at both neuron and activation levels. The proposed method outperforms DARTS on MNIST and CIFAR-10 benchmarks, achieving high accuracy with significantly fewer parameters. These results effectively validate its advantages in model compression and performance enhancement, establishing a new paradigm for constructing lightweight yet high-performance neural networks.

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LP-NAS: Linear Programming-based Neural Architecture Search

Aug 14, 2026

This study addresses the inefficiency and limited generalization inherent in differentiable neural architecture search (NAS) by proposing a novel linear programming-based framework. The method constructs a linear programming model utilizing validation loss gradients and training loss Hessians to determine architecture update directions, thereby ensuring parameter optimality while significantly enhancing generalization capability. Experimental results demonstrate that this framework achieves faster convergence and superior early-stage validation performance. Notably, it outperforms DARTS and its variants on both CIFAR and ImageNet benchmarks, establishing an efficient and robust approach to architecture search.

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Complexity-Budgeted, Interaction-Aware Interpretable Model for Tabular Data

Jul 08, 2026

This work addresses a critical limitation of traditional interpretable models, which often overlook interaction effects that emerge only through specific joint configurations of variables, leading to significant information loss. To overcome this, the authors propose the IAIML framework—the first approach to explicitly model pairwise interactions within compact interpretable models. IAIML identifies key interactions via adaptive discretization, finite-grid interaction scoring, and an interaction-aware feature admission mechanism, while controlling model complexity through an interpretability budget. Evaluated across 40 datasets, IAIML achieves an average AUC only 1.4% lower than gradient-boosted trees, with interpretability components reduced by 14–28 times. Notably, it substantially outperforms existing baselines in scenarios dominated by strong interactions, effectively balancing predictive accuracy and model interpretability.

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Recent publications

Latest Papers

Learning Auditable Classifier Models: Source-Disjoint Tree Ensembles

Aug 16, 2026

This study addresses the challenges of auditing tree-based models and the limited expressiveness of interpretable alternatives in regulated domains by proposing RPTE, a three-stage learning framework. By leveraging source-disjoint constraints and separated coefficient estimation, RPTE constructs sparse models decomposable into sums of named rule contributions, thereby ensuring inherent auditability by design. Evaluated across twelve clinical benchmarks, RPTE achieves accuracy comparable to mainstream ensemble methods while reducing audit units by 9 to 87 times relative to XGBoost and maintaining lower complexity than Explainable Boosting Machines (EBM). Consequently, this approach effectively reconciles high predictive performance with low auditing costs and strong interpretability, offering a viable solution for high-stakes applications where model transparency and regulatory compliance are paramount.

0 citationsRead paper

Designing Compact Neural Architectures via Neuron Gating and Mixed Activation

Aug 14, 2026

This study addresses the computational expense and trade-offs between compactness and performance in neural architecture search by proposing a general bilevel optimization framework. Through three scalable continuous relaxation formulations, discrete decisions are transformed into differentiable problems, enabling efficient architecture search at both neuron and activation levels. The proposed method outperforms DARTS on MNIST and CIFAR-10 benchmarks, achieving high accuracy with significantly fewer parameters. These results effectively validate its advantages in model compression and performance enhancement, establishing a new paradigm for constructing lightweight yet high-performance neural networks.

0 citationsRead paper

LP-NAS: Linear Programming-based Neural Architecture Search

Aug 14, 2026

This study addresses the inefficiency and limited generalization inherent in differentiable neural architecture search (NAS) by proposing a novel linear programming-based framework. The method constructs a linear programming model utilizing validation loss gradients and training loss Hessians to determine architecture update directions, thereby ensuring parameter optimality while significantly enhancing generalization capability. Experimental results demonstrate that this framework achieves faster convergence and superior early-stage validation performance. Notably, it outperforms DARTS and its variants on both CIFAR and ImageNet benchmarks, establishing an efficient and robust approach to architecture search.

0 citationsRead paper

Complexity-Budgeted, Interaction-Aware Interpretable Model for Tabular Data

Jul 08, 2026

This work addresses a critical limitation of traditional interpretable models, which often overlook interaction effects that emerge only through specific joint configurations of variables, leading to significant information loss. To overcome this, the authors propose the IAIML framework—the first approach to explicitly model pairwise interactions within compact interpretable models. IAIML identifies key interactions via adaptive discretization, finite-grid interaction scoring, and an interaction-aware feature admission mechanism, while controlling model complexity through an interpretability budget. Evaluated across 40 datasets, IAIML achieves an average AUC only 1.4% lower than gradient-boosted trees, with interpretability components reduced by 14–28 times. Notably, it substantially outperforms existing baselines in scenarios dominated by strong interactions, effectively balancing predictive accuracy and model interpretability.

0 citationsRead paper