1 code implementation • 5 Mar 2024 • Guanwen Qiu, Da Kuang, Surbhi Goel
Existing research often posits spurious features as "easier" to learn than core features in neural network optimization, but the impact of their relative simplicity remains under-explored.
no code implementations • 11 Aug 2021 • Kai Yuan, Da Kuang
Autocomplete (a. k. a "Query Auto-Completion", "AC") suggests full queries based on a prefix typed by customer.
no code implementations • 5 Jan 2017 • Da Kuang, P. Jeffrey Brantingham, Andrea L. Bertozzi
Formal crime types are not discrete in topic space.
no code implementations • 27 Apr 2016 • Wei Zhu, Victoria Chayes, Alexandre Tiard, Stephanie Sanchez, Devin Dahlberg, Andrea L. Bertozzi, Stanley Osher, Dominique Zosso, Da Kuang
In this paper, a graph-based nonlocal total variation method (NLTV) is proposed for unsupervised classification of hyperspectral images (HSI).
no code implementations • 16 Feb 2016 • Da Kuang, Zuoqiang Shi, Stanley Osher, Andrea Bertozzi
We present a new perspective on graph-based methods for collaborative ranking for recommender systems.
no code implementations • 3 Sep 2015 • Da Kuang, Barry Drake, Haesun Park
In this paper, we propose a fast method for hierarchical clustering and topic modeling called HierNMF2.
no code implementations • CVPR 2015 • Da Kuang, Alex Gittens, Raffay Hamid
In recent years, several feature encoding schemes for the bags-of-visual-words model have been proposed.
no code implementations • 2 Apr 2014 • Da Kuang, Alex Gittens, Raffay Hamid
The dominant cost in solving least-square problems using Newton's method is often that of factorizing the Hessian matrix over multiple values of the regularization parameter ($\lambda$).
no code implementations • 14 Sep 2013 • Nicolas Gillis, Da Kuang, Haesun Park
The effectiveness of this approach is illustrated on several synthetic and real-world hyperspectral images, and shown to outperform standard clustering techniques such as k-means, spherical k-means and standard NMF.
1 code implementation • SDM 2012 • Da Kuang, Chris Ding, Haesun Park
Unlike NMF, however, SymNMF is based on a similarity measure between data points, and factorizes a symmetric matrix containing pairwise similarity values (not necessarily nonnegative).