Now showing items 1-13 of 13

    • Data cleansing & Transformation of Observational Scientific Data : A Case Study 

      Singh, Lisa; Nelson, Greg L.; Mann, Janet; Coakes, Amanda; Krzyszczyk, Ewa; Herman, Elia (ACM, 2006)
      This paper investigates information quality as it pertains to observational scientific data. Specifically, we focus on presenting a case study for initial efforts related to data cleansing and data transformation of 20 ...
    • Exploring community structure in biological networks with random graphs 

      Sah, Pratha; Singh, Lisa; Clauset, Aaron; Bansal, Shweta (BioMed Central, 2014)
      Community structure is ubiquitous in biological networks. There has been an increased interest in unraveling the community structure of biological systems as it may provide important insights into a system’s functional ...
    • Exploring graph mining approaches for dynamic heterogeneous networks 

      Singh, Lisa (2007)
      As we become a more 'connected' society, a greater need exists to understand complex network structures. While many in the field of data mining analyze network data, most models of networks are straightforward-focusing on ...
    • Finding Prominent Actors in Dynamic Affiliation Networks 

      Sharara, Hossam; Getoor, Lise; Singh, Lisa; Mann, Janet (Academy of Science and Engineering, 2012)
      Most networks contain embedded communities or groups that impact the overall gathering and dissemination of ideas and information. These groups consist of important or prominent individuals who actively participate in ...
    • Increased Information Leakage from Text 

      Zhang, Sicong; Yang, Grace Hui; Singh, Lisa (2014)
      The enormous data sharing and data availability on the Internet provides opportunities for new services tailored to extract, search, aggregate, and mine data in meaningful ways, At the same time, it poses challenges with ...
    • Mapping Physician Twitter Networks: Describing How They Work as a First Step in Understanding Connectivity, Information Flow, and Message Diffusion 

      Mishori, Ranit; Singh, Lisa; Levy, Brendan; Newport, Calvin (Computer scientist) (JMIR Publications, 2014)
      Twitter is becoming an important tool in medicine, but there is little information on Twitter metrics. In order to recommend best practices for information dissemination and diffusion, it is important to first study and ...
    • Membership Detection Using Cooperative Mining 

      Newport, Calvin (Computer scientist); Singh, Lisa; Ren, Yiqing (2014)
      More and more companies are providing data mining and analytics solutions to customers using social media data. The general approach taken by these companies is to continually collect data from social media sites and then ...
    • Public Information Exposure Detection: Helping Users Understand Their Web Footprints 

      Singh, Lisa; Yang, Grace Hui; Sherr, Micah; Hian-Cheong, Andrew; Tian, Kevin; Zhu, Janet; Zhang, Sicong (2015)
      To help users better understand the potential risks associated with publishing data publicly, as well as the quantity and sensitivity of information that can be obtained by combining data from various online sources, ...
    • Social networks reveal cultural behaviour in tool - using dolphins 

      Mann, Janet; Stanton, Margaret A.; Patterson, Eric M.; Bienenstock, Elisa J.; Singh, Lisa (Nature Publishing Group, 2012)
      Animal tool use is of inherent interest given its relationship to intelligence, innovation and cultural behaviour. Here we investigate whether Shark Bay bottlenose dolphins that use marine sponges as hunting tools (spongers) ...
    • Using Large-scale Open Source Data to Identify Potential Forced Migration 

      Wei, Yifang; Yossinger, Nili Sarit; Cronbaugh, Christopher; Quinn, Dennis R.; Singh, Lisa; Martin, Susan Forbes; Berkowitz, Sidney; Collmann, Jeff; McGrath, Susan; Swingewood, Eleanor; Taylor, Abbie, 1988- (2014)
      This paper describes initial efforts to use open-source data to capture knowledge about forced migration in Iraq. Our goal is to understand the connection between open-source data and possible leading indicators of forced ...
    • Visual Analysis of Dynamic Group Membership in Temporal Social Networks 

      Kang, Hyunmo; Getoor, Lise; Singh, Lisa (Association for Computing Machinery, 2007)
      C-Group is a tool for analyzing dynamic group membership in temporal social networks over time. Unlike most network visualization tools, which show the group structure within an entire network, or the group membership for ...
    • Visualizing node attribute uncertainty in graphs 

      Cesario, Nathaniel; Pang, Alex; Singh, Lisa (2011)
      Visualizations can potentially misrepresent information if they ignore or hide the uncertainty that are usually present in the data. While various techniques and tools exist for visualizing uncertainty in scientific ...