Search Results for author: Ellen Vitercik

Found 21 papers, 0 papers with code

Bandit Profit-maximization for Targeted Marketing

no code implementations3 Mar 2024 Joon Suk Huh, Ellen Vitercik, Kirthevasan Kandasamy

Specifically, we aim to maximize profit over an arbitrary sequence of multiple demand curves, each dependent on a distinct ancillary variable, but sharing the same price.

Marketing

From Large to Small Datasets: Size Generalization for Clustering Algorithm Selection

no code implementations22 Feb 2024 Vaggos Chatziafratis, Ishani Karmarkar, Ellen Vitercik

We approach this problem by introducing a notion of size generalization for clustering algorithm accuracy.

Clustering

Disincentivizing Polarization in Social Networks

no code implementations23 May 2023 Christian Borgs, Jennifer Chayes, Christian Ikeokwu, Ellen Vitercik

We present a model for content curation and personalization that avoids filter bubbles, along with algorithmic guarantees and nearly matching lower bounds.

Leveraging Reviews: Learning to Price with Buyer and Seller Uncertainty

no code implementations20 Feb 2023 Wenshuo Guo, Nika Haghtalab, Kirthevasan Kandasamy, Ellen Vitercik

Customers with few relevant reviews may hesitate to make a purchase except at a low price, so for the seller, there is a tension between setting high prices and ensuring that there are enough reviews so that buyers can confidently estimate their values.

Structural Analysis of Branch-and-Cut and the Learnability of Gomory Mixed Integer Cuts

no code implementations15 Apr 2022 Maria-Florina Balcan, Siddharth Prasad, Tuomas Sandholm, Ellen Vitercik

These guarantees apply to infinite families of cutting planes, such as the family of Gomory mixed integer cuts, which are responsible for the main breakthrough speedups of integer programming solvers.

BIG-bench Machine Learning

No-Regret Learning in Partially-Informed Auctions

no code implementations22 Feb 2022 Wenshuo Guo, Michael I. Jordan, Ellen Vitercik

We formalize this problem as an online learning task where the goal is to have low regret with respect to a myopic oracle that has perfect knowledge of the distribution over items and the seller's masking function.

Revenue maximization via machine learning with noisy data

no code implementations NeurIPS 2021 Ellen Vitercik, Tom Yan

We conclude with an application of our guarantees to multi-task mechanism design, where there are multiple distributions over buyers' values and the goal is to learn a high-revenue mechanism per distribution.

BIG-bench Machine Learning

Improved Sample Complexity Bounds for Branch-and-Cut

no code implementations18 Nov 2021 Maria-Florina Balcan, Siddharth Prasad, Tuomas Sandholm, Ellen Vitercik

If the training set is too small, a configuration may have good performance over the training set but poor performance on future integer programs.

Generalization in portfolio-based algorithm selection

no code implementations24 Dec 2020 Maria-Florina Balcan, Tuomas Sandholm, Ellen Vitercik

This algorithm configuration procedure works by first selecting a portfolio of diverse algorithm parameter settings, and then, on a given problem instance, using an algorithm selector to choose a parameter setting from the portfolio with strong predicted performance.

Private Optimization Without Constraint Violations

no code implementations2 Jul 2020 Andrés Muñoz Medina, Umar Syed, Sergei Vassilvitskii, Ellen Vitercik

We also prove a lower bound demonstrating that the difference between the objective value of our algorithm's solution and the optimal solution is tight up to logarithmic factors among all differentially private algorithms.

Refined bounds for algorithm configuration: The knife-edge of dual class approximability

no code implementations ICML 2020 Maria-Florina Balcan, Tuomas Sandholm, Ellen Vitercik

We answer this question for algorithm configuration problems that exhibit a widely-applicable structure: the algorithm's performance as a function of its parameters can be approximated by a "simple" function.

How much data is sufficient to learn high-performing algorithms? Generalization guarantees for data-driven algorithm design

no code implementations8 Aug 2019 Maria-Florina Balcan, Dan DeBlasio, Travis Dick, Carl Kingsford, Tuomas Sandholm, Ellen Vitercik

We provide a broadly applicable theory for deriving generalization guarantees that bound the difference between the algorithm's average performance over the training set and its expected performance.

Clustering Generalization Bounds

Learning to Optimize Computational Resources: Frugal Training with Generalization Guarantees

no code implementations26 May 2019 Maria-Florina Balcan, Tuomas Sandholm, Ellen Vitercik

Our algorithm can help compile a configuration portfolio, or it can be used to select the input to a configuration algorithm for finite parameter spaces.

Clustering

Learning to Prune: Speeding up Repeated Computations

no code implementations26 Apr 2019 Daniel Alabi, Adam Tauman Kalai, Katrina Ligett, Cameron Musco, Christos Tzamos, Ellen Vitercik

We present an algorithm that learns to maximally prune the search space on repeated computations, thereby reducing runtime while provably outputting the correct solution each period with high probability.

Learning to Branch

no code implementations ICML 2018 Maria-Florina Balcan, Travis Dick, Tuomas Sandholm, Ellen Vitercik

Tree search algorithms recursively partition the search space to find an optimal solution.

Variable Selection

Dispersion for Data-Driven Algorithm Design, Online Learning, and Private Optimization

no code implementations8 Nov 2017 Maria-Florina Balcan, Travis Dick, Ellen Vitercik

We present general techniques for online and private optimization of the sum of dispersed piecewise Lipschitz functions.

Learning-Theoretic Foundations of Algorithm Configuration for Combinatorial Partitioning Problems

no code implementations14 Nov 2016 Maria-Florina Balcan, Vaishnavh Nagarajan, Ellen Vitercik, Colin White

We address this problem for clustering, max-cut, and other partitioning problems, such as integer quadratic programming, by designing computationally efficient and sample efficient learning algorithms which receive samples from an application-specific distribution over problem instances and learn a partitioning algorithm with high expected performance.

Clustering Learning Theory

Sample Complexity of Automated Mechanism Design

no code implementations NeurIPS 2016 Maria-Florina Balcan, Tuomas Sandholm, Ellen Vitercik

In the traditional economic models, it is assumed that the bidders' valuations are drawn from an underlying distribution and that the auction designer has perfect knowledge of this distribution.

Combinatorial Optimization Learning Theory

Learning Combinatorial Functions from Pairwise Comparisons

no code implementations30 May 2016 Maria-Florina Balcan, Ellen Vitercik, Colin White

However, for real-valued functions, cardinal labels might not be accessible, or it may be difficult for an expert to consistently assign real-valued labels over the entire set of examples.

BIG-bench Machine Learning

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