Search for tag: "spring 2015"

ORIE Colloquium on 3/10/2015 - Yudong Chen: Robust Low-rank Estimation: Statistical and Computational Challenges

Many problems in data analytics can be formulated as estimating a low-rank matrix from noisy data. This task is particularly challenging in the face of uncanonical data corruption and growing size…

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ORIE 9000 Colloquium - Xiaodong Li: Low-rank recovery: from convex to nonconvex methods

Low-rank structures are common in modern data analysis, and they play essential roles in various applications. It is challenging to recover low-rank structures reliably and ef´Čüciently from corrupted…

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ORIE Colloquium on 4/7/2015 - William Thomas: Why Post-World War II OR Theory Developed So Rapidly

The fifteen years following World War II saw the development of a wide range of theories of decision making and resource allocation. Notable fields arising from slim foundations included: sequential…

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ORIE 9000 Colloquium - Siddhartha Bannerjee: New Models and Mechanisms for Online Platforms

Abstract: New online platforms are profoundly altering our social and economic interactions by empowering new marketplaces and new collective behavior at increasingly larger scales. Many of these…

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ORIE Colloquium on 2/3/2015 - Shipra Agrawal: Optimization and Learning for Sequential Decision Making Under Uncertainty

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ORIE 9000 Colloquium - Rafael Frongillo: A Unified Theory of Elicitation via Convex Analysis

Elicitation is the study of mechanisms which incentivize the truthful reporting of private information from self-minded agents. In this talk I will present a general theory of elicitation grounded in…

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ORIE 9000 Colloquium - Maxime Cohen: When data analytics meets promotion pricing

The Promotion Optimization Problem (POP) is a challenging problem for supermarkets. The retailer needs to decide which items to promote, what is the price discount and finally, when to schedule the…

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ORIE Colloquium on 2/18/2015 - Mariana Olvera-Cravioto: Queues in the Cloud: Generalizing the single server queue to massively parallel networks

Motivated by today’s cloud computing capabilities in large server farms, we present a queueing model where jobs are split into a number of pieces which are then randomly routed to…

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ORIE 9000 Colloquium - Madeleine Udell: Generalized Low Rank Models

Principal components analysis (PCA) is a well-known technique for approximating a data set represented by a matrix by a low rank matrix. Here, we extend the idea of PCA to handle arbitrary data sets…

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ORIE Colloquium on 1/29/2015 - Jason Lee: Selective Inference via the Condition on Selection Framework: Applications to Inference After Variable Selection

Selective Inference is the problem of testing hypotheses that are chosen or suggested by the data. Inference after variable selection in high-dimensional linear regression is a common example of…

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ORIE Colloquium, 2015-03-09 - Hamed Amini: Epidemics and Percolation in Complex Networks

In this talk, we study two different diffusion models on the random graphs. In the first part, we consider first passage percolation. We analyze the impact of the edge weights on distances in…

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ORIE Colloquium, 2015-01-16 - Daniel Russo: Learning to Optimize

The information revolution is spawning systems that require very frequent decisions and provide high volumes of data concerning past outcomes. Fueling the design of algorithms used in such systems is…

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ORIE Colloquium, 2015-01-26 - Damek Davis: The Design and Analysis of Large-scale Operator-splitting Schemes

Continuous optimization is a key component of modern data analysis. Recently, the demands of extremely large-scale applications have shifted the focus from high cost, high accuracy methods to low…

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ORIE Colloquium, 2015-04-09 - Balasubramanian Sivan: Prior Robust Optimization

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ORIE Colloquium, 2015-04-21 - Archis Ghate: Convex and Dynamic Programming for Response-guided Dosing

Within the broad field of personalized medicine, there has been a recent surge of clinical interest in the idea of response-guided dosing. Roughly speaking, the goal is to develop dosing strategies…

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ORIE Colloquium, 2015-05-20 - Andrew Goldberg: Logistics Optimization at Amazon: Operations Research in Action

We discuss optimization problems at Amazon Logistics. Amazon is the biggest on-line retailer, fulfilling millions of orders a day. This leads to many classical OR problems. In addition, many of these…

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