The Web and Complex Systems (WaCS) Laboratory investigates deep learning, statistical graph modeling, nonparametric clustering, and topological methods to understand complex systems. We are especially interested in web, social, and geospatial systems.
|Graduate Students||Undergrad Students||Alumni|
|Logan Rickert||Nathan Rude (MS, 2016)|
Samir Yelne (MS, 2016)
Kyle Brown (PhD)
|Nripesh Trivedi (BS, 2015)|
Latest News (see the archive for past updates)
11/3/17: EmojiNet, our machine readable sense inventory for Emoji co-developed by Lakshika, has been selected for publication as a Kaggle dataset. Check it out here. If you play around with it let us know what you find!
10/10/17:Realistic Traffic Generation for Web Robots accepted at IEEE Intl. Conference on Machine Learning and Applications 2017. This work presents a generative process for producing synthetic sequences of web robot traffic. A stochastic process moderates temporal properties while a Bayesian model assigns behavioral attributes. The synthetic traffic impacts the performance of web server caches in similar ways as real robot traffic. Well done Kyle!
7/3/17:Explaining Trained Neural Networks with Semantic Web Technologies: First Steps accepted at the International Workshop on Neural-Symbolic Learning and Reasoning 2017. This paper documents our first (successful) efforts and attaching semantically driven explanations about why a deep network reaches a decision in scene classification tasks.
6/19/17:Seasonality in Dynamic Stochastic Blockmodels
accepted at the
Workshop on Complex Methods for Data and Web Mining at IEEE/ACM Web Intelligence 2017.
This work introduces a new staitsical network model where edge formation probabilities
depend on the `type' of each node and on seasonal time series processes that a latent
in data. An inference procedure to recover the latent seasonal processes from data is
also validated. This is Jace's first publication with WaCS!
EmojiNet: A Machine Readable Sense Inventory for EmojiEmojiNet is the largest machine-readable emoji sense inventory on the Web. EmojiNet links Unicode emoji representations to their English meanings extracted from the Web. The dataset consists of (i) 12,904 sense labels over 2,389 emoji, which were extracted from the web and linked to machine-readable sense definitions seen in BabelNet; (ii) context words associated with each emoji sense, which are inferred through word embedding models trained over Google News corpus and a Twitter message corpus for each emoji sense definition; and (iii) recognizing discrepancies in the presentation of emoji on different platforms, specification of an emoji's most likely platform-based sense.
Link to Resource and API
Resource on Kaggle
Press Coverage: Psychology Today
Current Research Projects
Students: Ning Xie
- M. K. Sarker, N. Xie, D. Doran, M. Raymer, and P. Hitzler. “Explaining Trained Neural Networks with Semantic Web Technologies: First Steps”, Proc. Of 12th Intl. Workshop on Neural-Symbolic Learning and Reasoning, London, United Kingdom, Jul. 2017
This work is supported by the Ohio Federal Research Network.
Students: Kyle Brown, Matt Piekenbrock
The This work is supported by the Oak Ridge Institute for Science and Education and the Air Force Research Laboratories.
Students: Matt Piekenbrock, Jace Robinson, Jameson Morgan
- M. Hashler, M. Piekenbrock, and D. Doran. “dbscan: Fast Density-based Clustering Algorithms in R”, Journal of Statistical Software, 2017
(Status: Accepted Pending Minor Revision)
- J. Robinson and D. Doran. “Seasonality in Dynamic Stochastic Blockmodels”, Proc. of ACM/IEEE Intl. Conference on Web Intelligence, Leipzig, Germany, Aug. 2017
- M. Piekenbrock and D. Doran. "Exploring Information-Optimal Network Discretization for Dynamic Network Analysis", INSNA Sunbelt Conference, Newport Beach, CA, April 2016
- M. Maurice, M. Piekenbrock, and D. Doran. "WAMINet: An Open Source Library for Dynamic Geospace Analysis Using WAMI", Proc. of IEEE Intl. Symposium on Multimedia, Miami, Florida, Dec. 2015
Students: Nathan Rude, Mahdieh Zabihimayvan, Kyle Brown, Ning Xie, Logan Rickert, Scott Duberstein
- M. Zabihimayvan, R. Sadeghi, and D. Doran. "An Integrated Approach for Benign and Malicious Web Robot Detection", Expert Systems With Applications, 2017
- N. Xie, K. Brown, N. Rude, and D. Doran. “A Soft Computing Prefetcher to Mitigate Cache Degradation by Web Robots”, Proc. Of Intl. Symposium on Neural Networks, Sapporo, Japan, Jun. 2017
- D. Doran and S. Gokhale. "An Integrated Method for Offline and Real-time Web Robot Detection", Expert Systems, 2016
- N. Rude and D. Doran. "Request Type Prediction for Web Robot and Internet of Things Traffic", Proc. of IEEE Intl. Conference on Machine Learning and Applications, Miami, Florida, Dec. 2015
This work is supported by the National Science Foundation under grant #1464104.
Students: Lakshika Balasuriya
- S. Wijeratne, L. Balasuriya, A. Sheth, and D. Doran. “A Semantics-Based Measure of Emoji Similarity”, Proc. Of IEEE/WIC/ACM Intl. Conference on Web Intelligence, Leipzig, Germany, Aug. 2017
- S. Wijeratne, L. Balasuriya, A. Sheth, and D. Doran. “EmojiNet: An Open Service and API for Emoji Sense Discovery”, Proc. Of AAAI Intl. Conference on Weblogs and Social Media, Vancouver, CA, May 2017
- S. Wijeratne, L. Balasuriya, A. Sheth, and D. Doran. “EmojiNet: Building a Machine Readable Sense Inventory for Emoji”, Proc. Of International Conference on Social Informatics, pp. 527-541, Seattle, WA, Nov. 2016
Press Coverage: Psychology Today
Completed Research Projects
Students: Samir Yelne, Nripesh Trivedi
- N. Trivedi, D. Asamoah, and D. Doran. “Keep the Conversation Going: Engagement-Based Customer Segmentation for Online Social Service Platforms”, Information Systems Frontiers, 2016
- M.C. Calzarossa, L. Massari, D. Doran, S. Yelne, N. Trivedi, and G. Moriarty. “Measuring the Users and Conversations of a Vibrant Online Emotional Support System”, Proc. Of IEEE Symposium on Computers and Communications, pp. 1193-1199, Messina, Italy, Jul. 2016
- D. Doran, S. Yelne, L. Massari, M.C. Calzarossa, L. Jackson, and G. Moriarty. “Stay Awhile and Listen: User Interactions in a Crowdsourced System Offering Emotional Support”, Proc. of IEEE/ACM Intl. Conference on Advances in Social Network Analysis and Mining, pp. 667-674, Paris, France, Aug. 2015
WaCS is very thankful to the following organizations for supporting our research and our student's education: