I am an Engineering Manager at Monte Carlo Data. I lead a team of software engineers to build the core data monitoring product.

I was an Engineering Manager at Reddit till Feb 2022, leading a team of software engineers to build revenue critical streaming and batch processing pipelines foundational to ad-serving, reporting and billing. I joined Reddit in 2017, where I lead work in Ads-Targeting: building features to match advertisers with their right audiences and in Data Engineering: building data ingestion & warehousing flow, growing pipeline 30X to 20 billion raw events/day.

I was a Research Engineer at Lithium Technologies and Klout between 2012 and 2017, building large scale data processing pipelines and machine learning models to measure user influence in social media.

I graduated from the University of California, Davis with a PhD in Computer Science in 2012. I was advised by Prof. S. (Shyhtsun) Felix Wu. My research area was software systems built on social networks to power search engines.

I dabbled in economic data analysis and worked with World International Patent Organization (WIPO) through Prof. Travis Lybbert, UC Davis to develop software systems based on text processing and keyword extraction models to analyze trademark and economic data.

Details of my professional experiences are on LinkedIn.

Selected Media Coverage

• Daily Chart: When to post a selfie, The Economist

• When is the best time to post on social media? Analysis of $100+$ million posts suggests there is no single answer. The London School of Economics and Political Science Blog

• When to post things to Facebook if you want the most likes, Washington Post

• Instagram Activities Now Factor Into Your Klout Score, PC Magazine

• 2020 Vision: Why you won’t recognize the ‘Net in 10 years, Network World

• Networking: Four ways to reinvent the Internet, Nature

Publications

Full list at Google scholar

• Mining Half a Billion Topical Experts Across Multiple Social Networks. Nemanja Spasojevic and Zhisheng Li and Adithya Rao and Prantik Bhattacharyya. In Social Network Analysis and Mining Journal (by Springer), 2016. [Local Copy] [BibTex]

• When-To-Post on Social Networks. Nemanja Spasojevic and Zhisheng Li and Adithya Rao and Prantik Bhattacharyya. In KDD 2015: 21st ACM SIGKDD Conference on Knowledge Discovery and Data Mining. [arXiv] [Slides] [Talk] [BibTex]

• LASTA: Large Scale Topic Assignment on Multiple Social Networks.
  Nemanja Spasojevic and Jinyun Yan and Adithya Rao and Prantik Bhattacharyya.
  In KDD 2014: 20th ACM SIGKDD Conference on Knowledge Discovery and Data Mining. [Local Copy] [BibTex] [Slides (PDF)] [Poster]

• InfoSearch: A Social Search Engine. Prantik Bhattacharyya and Shyhtsun Felix Wu. In Data Mining and Knowledge Discovery for Big Data, 2015. Springer Series on Studies in Big Data (Vol 1). [Local Copy] [BibTex]

• Sin: A platform to make interactions in social networks accessible. Roozbeh Nia, Fredrik Erlandsson, Prantik Bhattacharyya, Mohammad Rezaur Rahman, Henric Johnson, S Felix Wu. In SocialInformatics 2012: International Conference on Social Informatics, 2012. [Local Copy] [BibTex]

• The Evolution of Ego-Centric Triads: A Microscopic Approach toward Predicting Macroscopic Network Properties. Mina Doroud, Prantik Bhattacharyya, Shyhtsun Felix Wu, and Diane Felmlee. In SocialCom 2011: Proceeding of the 3rd IEEE International Conference on Social Computing, Boston, USA, October 2011. [Local Copy] [BibTex]

• Your Best might not be Good Enough: Ranking in Collaborative Social Search Engines. Prantik Bhattacharyya, Jeff Rowe, Shyhtsun Felix Wu, Karen Haigh, Niklas Lavesson, and Henric Johnson. In CollaborativeCom 2011: 7th International Conference on Collaborative Computing: Networking, Applications and Worksharing, Florida, USA, October 2011. [Local Copy] [BibTex]

• Analysis of User Keyword Similarity in Online Social Networks Prantik Bhattacharyya, Ankush Garg, and S. Felix Wu. In Social Network Analysis and Mining Journal (by Springer), 2011. [Local Copy] [BibTex]

• SocialWiki: Bring Order to Wiki Systems with Social Context. Haifeng Zhao, Shaozhi Ye, Prantik Bhattacharyya, Jeff Rowe, Ken Gribble, and S. Felix Wu.
  In SocInfo 2010: Proceedings of the 2nd IEEE International Conference on Social Informatics, Laxenburg, Austria. [Local Copy] [BibTex]

• Design and Implementation of Davis Social Links OSN Kernel.
  Thomas Tran, Kelcey Chan, Shaozhi Ye, Prantik Bhattacharyya, Ankush Garg, Xiaoming Lu, and S. Felix Wu. In SNAS 2009: Proceedings of the Workshop on Social Networks, Applications, and Systems, Boston, USA, August 2009. [Local Copy] [BibTeX]

• Davis Social Links: Leveraging Social Networks for Future Internet Communication. Lerone Banks, Prantik Bhattacharyya, Matthew Spear, and S. Felix Wu. In SAINT 2009: Proceedings of the Ninth Annual International Symposium on Applications and the Internet, Seattle, USA, July 2009. [Local Copy] [BibTeX]

• Information Flow and Search in Unstructured Keyword based Social Networks. Ankush Garg, Prantik Bhattacharyya, Charles U. Martel, and S. Felix Wu. In SMW 2009: Proceedings of the Social Mobile Web Workshop, Vancouver, Canada, August 2009. [Local Copy] [BibTeX]

• Social Network Model based on Keyword Categorization Prantik Bhattacharyya, Ankush Garg, and S. Felix Wu. In ASONAM 2009: Proceedings of the International Conference on Advances in Social Networks Analysis and Mining, Athens, Greece, July 2009. [Local Copy] [BibTeX] [Slides (PDF)]