Search Results for author: Gaurav Sinha

Found 11 papers, 1 papers with code

Optimal Regret with Limited Adaptivity for Generalized Linear Contextual Bandits

1 code implementation10 Apr 2024 Ayush Sawarni, Nirjhar Das, Siddharth Barman, Gaurav Sinha

For our batch learning algorithm B-GLinCB, with $\Omega\left( \log{\log T} \right)$ batches, the regret scales as $\tilde{O}(\sqrt{T})$.

Multi-Armed Bandits

GAR-meets-RAG Paradigm for Zero-Shot Information Retrieval

no code implementations31 Oct 2023 Daman Arora, Anush Kini, Sayak Ray Chowdhury, Nagarajan Natarajan, Gaurav Sinha, Amit Sharma

Given a query and a document corpus, the information retrieval (IR) task is to output a ranked list of relevant documents.

Passage Retrieval Re-Ranking +1

Learning Good Interventions in Causal Graphs via Covering

no code implementations8 May 2023 Ayush Sawarni, Rahul Madhavan, Gaurav Sinha, Siddharth Barman

We study the causal bandit problem that entails identifying a near-optimal intervention from a specified set $A$ of (possibly non-atomic) interventions over a given causal graph.

Disentangling Mixtures of Unknown Causal Interventions

no code implementations1 Oct 2022 Abhinav Kumar, Gaurav Sinha

In many real-world scenarios, such as gene knockout experiments, targeted interventions are often accompanied by unknown interventions at off-target sites.

Universal Lower Bound for Learning Causal DAGs with Atomic Interventions

no code implementations9 Nov 2021 Vibhor Porwal, Piyush Srivastava, Gaurav Sinha

Our second result shows that this bound is, in fact, within a factor of two of the size of the smallest set of single-node interventions that can orient the MEC.

Intervention Efficient Algorithm for Two-Stage Causal MDPs

no code implementations1 Nov 2021 Rahul Madhavan, Aurghya Maiti, Gaurav Sinha, Siddharth Barman

We study Markov Decision Processes (MDP) wherein states correspond to causal graphs that stochastically generate rewards.

Vocal Bursts Valence Prediction

A Causal Bandit Approach to Learning Good Atomic Interventions in Presence of Unobserved Confounders

no code implementations6 Jul 2021 Aurghya Maiti, Vineet Nair, Gaurav Sinha

First, we propose a simple regret minimization algorithm that takes as input a semi-Markovian causal graph with atomic interventions and possibly unobservable variables, and achieves $\tilde{O}(\sqrt{M/T})$ expected simple regret, where $M$ is dependent on the input CBN and could be very small compared to the number of arms.

Efficient reconstruction of depth three circuits with top fan-in two

no code implementations12 Mar 2021 Gaurav Sinha

We develop efficient randomized algorithms to solve the black-box reconstruction problem for polynomials over finite fields, computable by depth three arithmetic circuits with alternating addition/multiplication gates, such that output gate is an addition gate with in-degree two.

Vocal Bursts Valence Prediction

Budgeted and Non-budgeted Causal Bandits

no code implementations13 Dec 2020 Vineet Nair, Vishakha Patil, Gaurav Sinha

If there are no backdoor paths from an intervenable node to the reward node then we propose an algorithm to minimize simple regret that optimally trades-off observations and interventions based on the cost of intervention.

Dis-entangling Mixture of Interventions on a Causal Bayesian Network Using Aggregate Observations

no code implementations30 Nov 2019 Gaurav Sinha, Ayush Chauhan, Aurghya Maiti, Naman Poddar, Pulkit Goel

We study the problem of separating a mixture of distributions, all of which come from interventions on a known causal bayesian network.

Cannot find the paper you are looking for? You can Submit a new open access paper.