I graduated from the University of Wisconsin–Madison and was very fortunately advised by Prof. Paris Koutris at the database group. Before that, I worked with Prof. Yixin Cao at the Hong Kong Polytechnic University on graph problems. Currently, I am exploring opportunities at Meta.

I solve data management problems with principled guarantees and defended my thesis on some new results on consistent query answering (CQA).

Publications (* - alphabetical authorship following the convention of theoretical computer science; † - equal contribution)

• Naive Bayes Classifiers over Missing Data: Decision and Poisoning.
  Song Bian^†, Xiating Ouyang^†, Zhiwei Fan and Paraschos Koutris.
  ICML'24 @ Vienna, Austria

• Consistent Query Answering for Primary Keys on Rooted Tree Queries.
  * with Paraschos Koutris and Jef Wijsen.
  PODS'24 @ Santiago, Chile

• Conjunctive Queries with Negation and Aggregation: A Linear Time Characterization.
  Hangdong Zhao, Austen Z. Fan, Xiating Ouyang and Paraschos Koutris.
  PODS'24 @ Santiago, Chile [slides]

• LinCQA: Faster Consistent Query Answering with Linear Time Guarantees.
  * with Zhiwei Fan, Paraschos Koutris and Jef Wijsen.
  SIGMOD'23 @ Seattle Bellevue, WA [slides | poster]

• SparkCruise: Workload Optimization in Managed Spark Clusters at Microsoft.
  Abhishek Roy, Alekh Jindal, Priyanka Gomatam, Xiating Ouyang, Ashit Gosalia, Nishkam Ravi, Swinky Mann and Prakhar Jain.
  VLDB'21 (industrial track) @ Copenhagen, Denmark

• Consistent Query Answering for Primary Keys on Path Queries.
  * with Paraschos Koutris and Jef Wijsen.
  PODS'21 @ Xi'an, China [slides]

• Unit interval vertex deletion: Fewer vertices are relevant.
  Yuping Ke, Yixin Cao, Xiating Ouyang, Wenjun Li and Jianxin Wang.
  Journal of Computer and System Sciences (JCSS), 95:109–121 (2018).

Services

• Reviewer: ICALP'24, PODS'24, TODS, DMTCS, LMCS

• Organizer: UW-Madison DB Seminars, Exploring Hong Kong Communities

• Volunteer: SIGMOD'23, VLDB'21, COCOON'17, SMARTCOMP'17

Misc.

• I am equally mediocre at swimming, biking, running, hiking, and badminton.

• (YouTube) Ideas to deal with rejections, grad school, proof of Lemma 5.8, paper deadlines, choices, Madison WI, 時光流逝