We, members of Dept. of Computer Science and Information Engineering at National Cheng Kung University, devote to systems and algorithms on BigData Processing, Data Mining, and Data Visualization. We have explored several innovative research and industrial projects, itemizing in the following pages. Netdb lab is recruiting new members now, including students pursuing the Ph.D. degree. We also welcome the discussion on potential collaboration from academy and industry. Reach us at Room 65602, New Building of CSIE at NCKU.
Some Netdbers organized the TaiwanStat community, delivering the knowledge from data understanding to people. Currently, the data sources pick from Open Data which are provided by the Taiwan government. We also have some collaboration from academic . In Facebook, we have a dedicated fans page with more than 22K members (2015/8).
We explore two spatial KNN query algorithms on road networks, published in ACM CIKM 2011 and ACM CIKM 2013. We are motivated by the phenomenon of "80-20 rule", and try to identify so-called hot query subgraphs to facilitate the spatial KNN query. The cache-like mechanism enables the constant-time query of KNN objects. Check the details in these two papers.  Ying-Ju Chen, Kun-Ta Chuang, and Ming-Syan Chen "Coupling or Decoupling for KNN Search on Road Networks? A Hybrid Framework on User Query Patterns", in ACM CIKM 2011.  Ying-Ju Chen, Kun-Ta Chuang, and Ming-Syan Chen "Spatial-Temporal Query Homogeneity for KNN Object Search on Road Networks ", in ACM CIKM 2013.
We launched an innovative web service, called Canner, in the beta mode. Canner is designed in light with the principle to decouple web content and web view, allowing page owners to create one-page websites in minutes. Page owners can also seek for web programmers to further revise their pages collaboratively. Welcome to have a try!
Influential Sustainability on Social Networks Paragraph: We study a novel paradigm of viral marketing with the goal to sustain the influential effectiveness in the network. We investigate from real cases such as the Ice Bucket Challenges for the ALS awareness, and figure out the "easy come and easy go" phenomenon in the marketing promotion. The goal of Influential Sustainability is to best decide the timing to activate each seed so as to maximize the number of iterations in which each iteration will activate the number of inactive nodes more than the threshold. Chien-Wei Chang, Po-An Yang, Ming-Han Lyu and Kun-Ta Chuang, "Influential Sustainability on Social Networks", ICDM 2015
Assistant Professor in Dept. of Computer Science and Information Engineering, NCKU. His research interest includes data mining and database in big data processing. Before joining NCKU, he served as a senior engineer in SYNOPSYS Inc.
Currently a Ph.D. student in Computer Science. His research interest includes data mining, particularly devoting to analytics on social networks. He received the M.S. degree from CSIE@NCKU and the B.S. degree from Math@NCKU.
Currently a Ph.D. student in Computer Science. His research interest includes data mining, particularly devoting to data stream classification. He received the M.S. degree from CSIE@NCKU and the B.S. degree from CSIE@NCUE.
Currently a Ph.D. student in Computer Science. Her research interest includes spatial data mining and analytics on social networks. She enters PhD programs directly from her undergraduate M.S. studies, and received the B.S. degree from CSIE@NCKU.
Currently a Ph.D. student in Computer Science. He was graduated with the statistics background. He served in the semiconductor industry for years.
Currently a Ph.D. student in Computer Science. His research interest includes map-reduce algorithms for data mining applications and knowledge representation in RDF databases. He received the M.S. degree and the B.S. degree from CSIE@NCKU.
Currently a master student in CS, exploring the integration of data science and medical informatics. He is the initial creator of TaiwanStat, the popular OpenData Visualization Community in Taiwan. His interests include data mining and web technologies, data visualization. He received the B.S. degree from CSIE@NCKU.
Currently a master student in CS with specialized implementation skills in Python and Django. His interests include data mining, social network and the web backend architecture. He received the B.S degree from CSIE@NCKU. Recently, he studies the query issue in graph databases.
Currently a master student in CS, exploring the visualization of data and spatial data processing. Her interests include front-end design and data mining. She received the B.S degree from CSIE@NCKU.
Currently a master student in CS. He specializes in the Hadoop ecosystem, design of Map-Reduce mining algorithms. His interests include data analysis and mining ( experienced on Kaggle competition) . Recently, he studies Spark MLlib and Oozie. He received the B.S. degree from CSIE@NCKU.
Currently a master student in CS. His research focuses on the spatial data management. He received the B.S. degree from CSIE@NCKU.
Currently a undergraduate student in CS. He joins TaiwanStat as a web developer, familiar with the frontend design. He is also in charge of the development for various internal-use web services in NCKU.
Currently a undergraduate student in CS. He joins TaiwanStat as a frontend developer. He is also familiar with the web framework django.
Ex-Netdber (Master of Science, 2012-2014), with thesis topic on "Graph-based Mining for Malware Detection". (My best support goes to Arvin Huang for his great contribution in our industrial collaboration and lab’s infrastructure. Please do not hesitate to contact Prof. Kun-Ta Chuang via email: email@example.com if you would like to inquiry about his ability and personality.)
T.-Y. Chung received the B.S. and M.S. degrees from the Department of Computer Science and Information Engineering, National Cheng Kung University in 2013 and 2015, respectively. His research interests include spatial data management, mobile data management, geographic information systems, and security and privacy.
(Master of Science, 2013-2015)
Ex-Netdber (received the B.S. degree in 2015), who is one of the core team of TaiwanStat, creating many web-visualization projects in the early stage of TaiwanStat. He is familiar with the frontend design.