Search Results for author: Hantian Zhang

Found 10 papers, 4 papers with code

Falcon: Fair Active Learning using Multi-armed Bandits

1 code implementation23 Jan 2024 Ki Hyun Tae, Hantian Zhang, Jaeyoung Park, Kexin Rong, Steven Euijong Whang

Given a user-specified group fairness measure, Falcon identifies samples from "target groups" (e. g., (attribute=female, label=positive)) that are the most informative for improving fairness.

Active Learning Attribute +4

iFlipper: Label Flipping for Individual Fairness

1 code implementation15 Sep 2022 Hantian Zhang, Ki Hyun Tae, Jaeyoung Park, Xu Chu, Steven Euijong Whang

We then propose an approximate linear programming algorithm and provide theoretical guarantees on how close its result is to the optimal solution in terms of the number of label flips.

Fairness

OmniFair: A Declarative System for Model-Agnostic Group Fairness in Machine Learning

no code implementations13 Mar 2021 Hantian Zhang, Xu Chu, Abolfazl Asudeh, Shamkant B. Navathe

Existing techniques for producing fair ML models either are limited to the type of fairness constraints they can handle (e. g., preprocessing) or require nontrivial modifications to downstream ML training algorithms (e. g., in-processing).

BIG-bench Machine Learning Fairness

ALEX: An Updatable Adaptive Learned Index

no code implementations21 May 2019 Jialin Ding, Umar Farooq Minhas, JIA YU, Chi Wang, Jaeyoung Do, Yi-Nan Li, Hantian Zhang, Badrish Chandramouli, Johannes Gehrke, Donald Kossmann, David Lomet, Tim Kraska

The original work by Kraska et al. shows that a learned index beats a B+Tree by a factor of up to three in search time and by an order of magnitude in memory footprint.

PSFGAN: a generative adversarial network system for separating quasar point sources and host galaxy light

no code implementations23 Mar 2018 Dominic Stark, Barthelemy Launet, Kevin Schawinski, Ce Zhang, Michael Koss, M. Dennis Turp, Lia F. Sartori, Hantian Zhang, Yiru Chen, Anna K. Weigel

We test the method using Sloan Digital Sky Survey (SDSS) r-band images with artificial AGN point sources added which are then removed using the GAN and with parametric methods using GALFIT.

Astrophysics of Galaxies Data Analysis, Statistics and Probability

ZipML: Training Linear Models with End-to-End Low Precision, and a Little Bit of Deep Learning

no code implementations ICML 2017 Hantian Zhang, Jerry Li, Kaan Kara, Dan Alistarh, Ji Liu, Ce Zhang

We examine training at reduced precision, both from a theoretical and practical perspective, and ask: is it possible to train models at end-to-end low precision with provable guarantees?

Quantization

MLBench: How Good Are Machine Learning Clouds for Binary Classification Tasks on Structured Data?

no code implementations29 Jul 2017 Yu Liu, Hantian Zhang, Luyuan Zeng, Wentao Wu, Ce Zhang

We then compare the performance of the top winning code available from Kaggle with that of running machine learning clouds from both Azure and Amazon on mlbench.

BIG-bench Machine Learning Binary Classification +1

Generative Adversarial Networks recover features in astrophysical images of galaxies beyond the deconvolution limit

no code implementations1 Feb 2017 Kevin Schawinski, Ce Zhang, Hantian Zhang, Lucas Fowler, Gokula Krishnan Santhanam

Observations of astrophysical objects such as galaxies are limited by various sources of random and systematic noise from the sky background, the optical system of the telescope and the detector used to record the data.

Generative Adversarial Network

The ZipML Framework for Training Models with End-to-End Low Precision: The Cans, the Cannots, and a Little Bit of Deep Learning

1 code implementation16 Nov 2016 Hantian Zhang, Jerry Li, Kaan Kara, Dan Alistarh, Ji Liu, Ce Zhang

When applied to linear models together with double sampling, we save up to another 1. 7x in data movement compared with uniform quantization.

Quantization

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