Search Results for author: Stephen Pasteris

Found 18 papers, 0 papers with code

Fusion Encoder Networks

no code implementations24 Feb 2024 Stephen Pasteris, Chris Hicks, Vasilios Mavroudis

In this paper we present fusion encoder networks (FENs): a class of algorithms for creating neural networks that map sequences to outputs.

Sum-max Submodular Bandits

no code implementations10 Nov 2023 Stephen Pasteris, Alberto Rumi, Fabio Vitale, Nicolò Cesa-Bianchi

Many online decision-making problems correspond to maximizing a sequence of submodular functions.

Decision Making

Nearest Neighbour with Bandit Feedback

no code implementations NeurIPS 2023 Stephen Pasteris, Chris Hicks, Vasilios Mavroudis

In this paper we adapt the nearest neighbour rule to the contextual bandit problem.

Adversarial Online Collaborative Filtering

no code implementations11 Feb 2023 Stephen Pasteris, Fabio Vitale, Mark Herbster, Claudio Gentile, Andre' Panisson

We investigate the problem of online collaborative filtering under no-repetition constraints, whereby users need to be served content in an online fashion and a given user cannot be recommended the same content item more than once.

Collaborative Filtering

Joint Coreset Construction and Quantization for Distributed Machine Learning

no code implementations13 Apr 2022 Hanlin Lu, Changchang Liu, Shiqiang Wang, Ting He, Vijay Narayanan, Kevin S. Chan, Stephen Pasteris

Coresets are small, weighted summaries of larger datasets, aiming at providing provable error bounds for machine learning (ML) tasks while significantly reducing the communication and computation costs.

BIG-bench Machine Learning Quantization

A Gang of Adversarial Bandits

no code implementations NeurIPS 2021 Mark Herbster, Stephen Pasteris, Fabio Vitale, Massimiliano Pontil

Users are in a social network and the learner is aided by a-priori knowledge of the strengths of the social links between all pairs of users.

Recommendation Systems

Cooperative Stochastic Bandits with Asynchronous Agents and Constrained Feedback

no code implementations NeurIPS 2021 Lin Yang, Yu-Zhen Janice Chen, Stephen Pasteris, Mohammad Hajiesmaili, John C. S. Lui, Don Towsley

This paper studies a cooperative multi-armed bandit problem with $M$ agents cooperating together to solve the same instance of a $K$-armed stochastic bandit problem with the goal of maximizing the cumulative reward of agents.

Decision Making

Communication-efficient k-Means for Edge-based Machine Learning

no code implementations8 Feb 2021 Hanlin Lu, Ting He, Shiqiang Wang, Changchang Liu, Mehrdad Mahdavi, Vijaykrishnan Narayanan, Kevin S. Chan, Stephen Pasteris

We consider the problem of computing the k-means centers for a large high-dimensional dataset in the context of edge-based machine learning, where data sources offload machine learning computation to nearby edge servers.

BIG-bench Machine Learning Dimensionality Reduction +1

Online Multitask Learning with Long-Term Memory

no code implementations NeurIPS 2020 Mark Herbster, Stephen Pasteris, Lisa Tse

We provide an algorithm that predicts on each trial in time linear in the number of hypotheses when the hypothesis class is finite.

Online Learning of Facility Locations

no code implementations6 Jul 2020 Stephen Pasteris, Ting He, Fabio Vitale, Shiqiang Wang, Mark Herbster

In this paper, we provide a rigorous theoretical investigation of an online learning version of the Facility Location problem which is motivated by emerging problems in real-world applications.

Online Matrix Completion with Side Information

no code implementations NeurIPS 2020 Mark Herbster, Stephen Pasteris, Lisa Tse

In this setting, we provide an example where the side information is not directly specified in advance.

Matrix Completion

MaxHedge: Maximising a Maximum Online

no code implementations28 Oct 2018 Stephen Pasteris, Fabio Vitale, Kevin Chan, Shiqiang Wang, Mark Herbster

We introduce a new online learning framework where, at each trial, the learner is required to select a subset of actions from a given known action set.

On Pairwise Clustering with Side Information

no code implementations19 Jun 2017 Stephen Pasteris, Fabio Vitale, Claudio Gentile, Mark Herbster

We measure performance not based on the recovery of the hidden similarity function, but instead on how well we classify each item.

Clustering Inductive Bias

A Time and Space Efficient Junction Tree Architecture

no code implementations31 Jul 2013 Stephen Pasteris

The junction tree algorithm first constructs a tree called a junction tree who's vertices are sets of random variables.

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