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Amit Kumar

14 accepted papers

2025

Learning-Augmented Algorithms for $k$-median via Online Learning

NeurIPS 2025poster

The field of learning-augmented algorithms seeks to use ML techniques on past instances of a problem to inform an algorithm designed for a future instance. In this paper, we introduce a novel model for learning-augmented algorithms inspired by online learning. In this model, we are given a sequence…

Cited by 0SourceScholar
2024

Centralized Selection with Preferences in the Presence of Biases

ICML 2024poster

This paper considers the scenario in which there are multiple institutions, each with a limited capacity for candidates, and candidates, each with preferences over the institutions. A central entity evaluates the utility of each candidate to the institutions, and the goal is to select candidates for…

2024

Towards Fairness in Online Service with K Servers and Its Application on Fair Food Delivery

AAAI 2024technical

The k-SERVER problem is one of the most prominent problems in online algorithms with several variants and extensions. However, simplifying assumptions like instantaneous server movements and zero service time has hitherto limited its applicability to real-world problems. In this paper, we introduce…

2024

Universal Weak Coreset

AAAI 2024technical

Coresets for k-means and k-median problems yield a small summary of the data, which preserves the clustering cost with respect to any set of k centers. Recently coresets have also been constructed for constrained k-means and k-median problems. However, the notion of coresets has the drawback that (i…

Cited by 1SourcePDFScholar
2023

AI Made by Youth: A Conversational AI Curriculum for Middle School Summer Camps

AAAI 2023technical

As artificial intelligence permeates our lives through various tools and services, there is an increasing need to consider how to teach young learners about AI in a relevant and engaging way. One way to do so is to leverage familiar and pervasive technologies such as conversational AIs. By learning…

Cited by 12SourcePDFScholar
2023

Bias in Evaluation Processes: An Optimization-Based Model

NeurIPS 2023poster

Biases with respect to socially-salient attributes of individuals have been well documented in evaluation processes used in settings such as admissions and hiring. We view such an evaluation process as a transformation of a distribution of the true utility of an individual for a task to an observed…

2022

EyePAD++: A Distillation-Based Approach for Joint Eye Authentication and Presentation Attack Detection Using Periocular Images

CVPR 2022poster

A practical eye authentication (EA) system targeted for edge devices needs to perform authentication and be robust to presentation attacks, all while remaining compute and latency efficient. However, existing eye-based frameworks a) perform authentication and Presentation Attack Detection (PAD) inde…

Cited by 15PDFScholar
2021

A Regression Approach to Learning-Augmented Online Algorithms

NeurIPS 2021poster

The emerging field of learning-augmented online algorithms uses ML techniques to predict future input parameters and thereby improve the performance of online algorithms. Since these parameters are, in general, real-valued functions, a natural approach is to use regression techniques to make these p…

Cited by 24SourcePDFScholar
2021

Gated Transformer for Robust De-noised Sequence-to-Sequence Modelling

EMNLP 2021finding

Robust sequence-to-sequence modelling is an essential task in the real world where the inputs are often noisy. Both user-generated and machine generated inputs contain various kinds of noises in the form of spelling mistakes, grammatical errors, character recognition errors, all of which impact down…

2019

A Dual-Path Model With Adaptive Attention for Vehicle Re-Identification

ICCV 2019oral

In recent years, attention models have been extensively used for person and vehicle re-identification. Most re-identification methods are designed to focus attention on key-point locations. However, depending on the orientation, the contribution of each key-point varies. In this paper, we present a…

Cited by 291PDFcodeScholar