April 2015 - Dm-meeting - mailman.cs.vt.edu

Group Meeting Summary
by yaozhang 16 Apr '15

16 Apr '15

Hi everyone, Today we talked about our current work: Steve and Yao: community detection for three types of nodes; Elaheh: using SpikeM to predict civil unrest; Sorour and Liangzhe: data sequence segmentation. We will not have our regular meeting next week. After next week, Aditya may give us the presentation rehearsal for SDM 2015 on April 27th or 28th (Monday or Tuesday). Thank you. Regards, Yao

1 0

Group Meeting Tomorrow
by yaozhang 15 Apr '15

15 Apr '15

Hi everyone, Just kind reminder that we are going to talk about our current works tomorrow. Thank you. Regards, Yao

1 0

DM-Meeting Tomorrow
by yaozhang 08 Apr '15

08 Apr '15

Hi everyone, Tomorrow Dr. Ravi Tandon will give a talk about his research in our group meeting at 12:30pm. Feel free to invite anyone who are interested in this topic. Here is the detail of his talk: *** Title: Information Theory of Coded Caching in Networks Abstract: Caching is emerging as a vital tool for alleviating the severe capacity crunch in modern content-centric wireless networks. The main idea behind caching is to store parts of the popular content in end-users' memory and leverage the locally stored content to reduce peak data rates. I will talk about a new information theoretic approach to caching which shows that jointly designing content placement and delivery mechanisms can lead to order-wise reduction in transmission rates in contrast to traditional methods. I will also talk about the secure caching problem with the additional goal of minimizing information leakage to an external adversary. Our results show that security can be introduced at a negligible cost, particularly for large number of files and users. Time permitting, I will also discuss some open problems, and ongoing work which uses reinforcement learning to adapt these strategies to changing network traffic demands. *** Thank you. Regards, Yao

1 0

Meeting Notes (04/02/2015)
by yaozhang 02 Apr '15

02 Apr '15

Hi everyone, Today, Liangzhe talked about two papers: 1. "On Integrating Network and Community Discovery" (WSDM 2015): this paper talked about how to integrate community detection with network discovery. The problem is, given Gs(Ns,As,Qs), a target node set Nt (subset of Ns), an ability to query any currently observe node for their adjacent links at cost ci, we want to cluster Nt into the set of k most tightly linked communities within a total budget B. There may be some useful evaluations for us such as purity and entropy used in this paper. And we can also think about the problem like community detection+inferring network structure. 2. "Global Diffusion via Cascading Invitations: Structure, Growth and Homophily" (WWW 2015): this papers investigated diffusion patterns through invitation from existing members in Linkedin. There are some interesting new patterns of diffusion in Linkedin, e.g., the cascade size in Linkedin goes linearly w.r.t. the time which is different from Twitter and Facebook. Next Thursday, if Ravi is not available for the talk, Elaheh will give a presentation. Thank you. Regards, Yao

1 0

Group Meeting Tomorrow
by yaozhang 01 Apr '15

01 Apr '15

Hi everyone, We will have our regular group meeting tomorrow at 12:30pm. Liangzhe will give a talk this time. Thank you. Regards, Yao

1 0