no code implementations • 4 Nov 2022 • Zhipeng Huang, Kevin S. Xu
We propose to model HLA compatibility using a network, where the nodes denote different HLAs of the donor and recipient, and edge weights denote compatibilities of the HLAs, which can be positive or negative.
1 code implementation • 19 May 2022 • Zhipeng Huang, Hadeel Soliman, Subhadeep Paul, Kevin S. Xu
Networks and temporal point processes serve as fundamental building blocks for modeling complex dynamic relational data in various domains.
1 code implementation • 2 May 2022 • Hadeel Soliman, Lingfei Zhao, Zhipeng Huang, Subhadeep Paul, Kevin S. Xu
The stochastic block model (SBM) is one of the most widely used generative models for network data.
no code implementations • 17 May 2021 • Fatema Hasan, Kevin S. Xu, James R. Foulds, SHimei Pan
User-generated data on social media contain rich information about who we are, what we like and how we make decisions.
no code implementations • 4 Mar 2021 • Mohammadreza Nemati, Haonan Zhang, Michael Sloma, Dulat Bekbolsynov, Hong Wang, Stanislaw Stepkowski, Kevin S. Xu
Kidney transplantation can significantly enhance living standards for people suffering from end-stage renal disease.
1 code implementation • NeurIPS 2020 • Makan Arastuie, Subhadeep Paul, Kevin S. Xu
In many application settings involving networks, such as messages between users of an on-line social network or transactions between traders in financial markets, the observed data consist of timestamped relational events, which form a continuous-time network.
no code implementations • 29 Nov 2017 • Ruthwik R. Junuthula, Maysam Haghdan, Kevin S. Xu, Vijay K. Devabhaktuni
The BPPM is inspired by the well-known stochastic block model (SBM) for static networks.
1 code implementation • 26 Jul 2017 • Yuning Zhang, Maysam Haghdan, Kevin S. Xu
In this paper, we demonstrate that unsupervised learning algorithms perform competitively with supervised algorithms for detecting MAs on EDA data collected in both a lab-based setting and a real-world setting comprising about 23 hours of data.
no code implementations • 17 Mar 2017 • Urvashi Oswal, Swayambhoo Jain, Kevin S. Xu, Brian Eriksson
In this paper, we consider matrix approximation by sampling predefined \emph{blocks} of columns (or rows) from the matrix.
no code implementations • 25 Jul 2016 • Ruthwik R. Junuthula, Kevin S. Xu, Vijay K. Devabhaktuni
Recent work by Yang et al. has highlighted several challenges in evaluating link prediction accuracy.
no code implementations • 24 Feb 2016 • Swayambhoo Jain, Urvashi Oswal, Kevin S. Xu, Brian Eriksson, Jarvis Haupt
The measurement and analysis of Electrodermal Activity (EDA) offers applications in diverse areas ranging from market research, to seizure detection, to human stress analysis.
no code implementations • 20 Aug 2015 • Ko-Jen Hsiao, Kevin S. Xu, Jeff Calder, Alfred O. Hero III
If the relative importance of the different dissimilarity measures are not known in advance, as in many anomaly detection applications, the anomaly detection algorithm may need to be executed multiple times with different choices of weights in the linear combination.
no code implementations • 19 Nov 2014 • Kevin S. Xu
There has been great interest in recent years on statistical models for dynamic networks.
no code implementations • 31 Oct 2014 • Qiuyi Han, Kevin S. Xu, Edoardo M. Airoldi
Significant progress has been made recently on theoretical analysis of estimators for the stochastic block model (SBM).
Methodology Social and Information Networks Statistics Theory Physics and Society Statistics Theory
no code implementations • 4 Mar 2014 • Kevin S. Xu, Alfred O. Hero III
There has been recent interest in statistical modeling of dynamic networks, which are observed at multiple points in time and offer a richer representation of many complex phenomena.
no code implementations • 30 Apr 2013 • Kevin S. Xu, Mark Kliger, Yilun Chen, Peter J. Woolf, Alfred O. Hero III
To date, most studies on spam have focused only on the spamming phase of the spam cycle and have ignored the harvesting phase, which consists of the mass acquisition of email addresses.
no code implementations • 22 Apr 2013 • Kevin S. Xu, Alfred O. Hero III
Significant efforts have gone into the development of statistical models for analyzing data in the form of networks, such as social networks.