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Lokesh Nagalapatti

9 accepted papers

2025

From Search to Sampling: Generative Models for Robust Algorithmic Recourse

ICLR 2025poster

Algorithmic Recourse provides recommendations to individuals who are adversely impacted by automated model decisions, on how to alter their profiles to achieve a favorable outcome. Effective recourse methods must balance three conflicting goals: proximity to the original profile to minimize cost, pl…

2025

Robust Root Cause Diagnosis using In-Distribution Interventions

ICLR 2025poster

Diagnosing the root cause of an anomaly in a complex interconnected system is a pressing problem in today’s cloud services and industrial operations. We propose In-Distribution Interventions (IDI), a novel algorithm that predicts root cause as nodes that meet two criteria: 1) Anomaly: root cause nod…

2025

Tab-Shapley: Identifying Top-k Tabular Data Quality Insights

AAAI 2025technical

We present an unsupervised method for aggregating anomalies in tabular datasets by identifying the top-k tabular data quality insights. Each insight consists of a set of anomalous attributes and the corresponding subsets of records that serve as evidence to the user. The process of identifying these…

Cited by 0SourcePDFScholar
2024

Continuous Treatment Effect Estimation Using Gradient Interpolation and Kernel Smoothing

AAAI 2024technical

We address the Individualized continuous treatment effect (ICTE) estimation problem where we predict the effect of any continuous valued treatment on an individual using ob- servational data. The main challenge in this estimation task is the potential confounding of treatment assignment with in- div…

2024

PairNet: Training with Observed Pairs to Estimate Individual Treatment Effect

ICML 2024poster

Given a dataset of individuals each described by a covariate vector, a treatment, and an observed outcome on the treatment, the goal of the individual treatment effect (ITE) estimation task is to predict outcome changes resulting from a change in treatment. A fundamental challenge is that in the obs…

2022

Is Your Data Relevant?: Dynamic Selection of Relevant Data for Federated Learning

AAAI 2022technical

Federated Learning (FL) is a machine learning paradigm in which multiple clients participate to collectively learn a global machine learning model at the central server. It is plausible that not all the data owned by each client is relevant to the server's learning objective. The updates incorporate…

Cited by 27SourcePDFScholar
2022

Learning Recourse on Instance Environment to Enhance Prediction Accuracy

NeurIPS 2022accept

Machine Learning models are often susceptible to poor performance on instances sampled from bad environments. For example, an image classifier could provide low accuracy on images captured under low lighting conditions. In high stake ML applications, such as AI-driven medical diagnostics, a better o…

Cited by 0SourcePDFScholar
2021

Game of Gradients: Mitigating Irrelevant Clients in Federated Learning

AAAI 2021technical

The paradigm of Federated learning (FL) deals with multiple clients participating in collaborative training of a machine learning model under the orchestration of a central server. In this setup, each client’s data is private to itself and is not transferable to other clients or the server. Though F…