Search Results for author: Tianyi Peng

Found 8 papers, 2 papers with code

Markovian Interference in Experiments

no code implementations6 Jun 2022 Vivek F. Farias, Andrew A. Li, Tianyi Peng, Andrew Zheng

We consider experiments in dynamical systems where interventions on some experimental units impact other units through a limiting constraint (such as a limited inventory).

Off-policy evaluation

Synthetically Controlled Bandits

no code implementations14 Feb 2022 Vivek Farias, Ciamac Moallemi, Tianyi Peng, Andrew Zheng

This paper presents a new dynamic approach to experiment design in settings where, due to interference or other concerns, experimental units are coarse.

Thompson Sampling

Uncertainty Quantification For Low-Rank Matrix Completion With Heterogeneous and Sub-Exponential Noise

no code implementations22 Oct 2021 Vivek F. Farias, Andrew A. Li, Tianyi Peng

The problem of low-rank matrix completion with heterogeneous and sub-exponential (as opposed to homogeneous and Gaussian) noise is particularly relevant to a number of applications in modern commerce.

Low-Rank Matrix Completion Uncertainty Quantification

Fixing Inventory Inaccuracies At Scale

no code implementations23 Jun 2020 Vivek F. Farias, Andrew A. Li, Tianyi Peng

Using synthetic data and real data from a consumer goods retailer, we show that our approach provides up to a 10x cost reduction over incumbent approaches to anomaly detection.

Anomaly Detection Matrix Completion

The Limits to Learning a Diffusion Model

no code implementations11 Jun 2020 Jackie Baek, Vivek F. Farias, Andreea Georgescu, Retsef Levi, Tianyi Peng, Deeksha Sinha, Joshua Wilde, Andrew Zheng

In a similar vein, our results imply that in the case of an SIR model, one cannot hope to predict the eventual number of infections until one is approximately two-thirds of the way to the time at which the infection rate has peaked.

Decision Making

Simulating large quantum circuits on a small quantum computer

3 code implementations29 Mar 2019 Tianyi Peng, Aram Harrow, Maris Ozols, Xiaodi Wu

The tensor network of such a circuit can be decomposed into clusters of size at most $d$ with at most $K$ qubits of inter-cluster quantum communication.

Quantum Physics

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