T
Tian Xia
Researcher at Northeastern University
Publications - 10
Citations - 953
Tian Xia is an academic researcher from Northeastern University. The author has contributed to research in topics: k-nearest neighbors algorithm & Set (abstract data type). The author has an hindex of 10, co-authored 10 publications receiving 922 citations. Previous affiliations of Tian Xia include Oracle Corporation.
Papers
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Proceedings ArticleDOI
Finding Fastest Paths on A Road Network with Speed Patterns
TL;DR: This paper proposes and solves the Time-Interval All Fastest Path (allFP) query, and proposes a solution based on novel extensions to the A* algorithm that is more efficient and more accurate than the discrete-time approach.
Book ChapterDOI
The optimal-location query
Yang Du,Donghui Zhang,Tian Xia +2 more
TL;DR: This paper proposes three methods that accurately compute optimal locations that are based on a new index structure called the OL-tree, which novelly extends the k-d-B-tree to store segmented rectangular records.
Proceedings ArticleDOI
Progressive computation of the min-dist optimal-location query
TL;DR: This paper first provides a theorem that limits the number of candidate locations without losing the power to find exact answers, and provides a progressive algorithm that quickly suggests a location, tells the maximum error it may have, and keeps refining the result.
Proceedings Article
On computing top- t most influential spatial sites
TL;DR: An algorithm called TopInfluential-Sites is proposed, which finds the top-t most influential sites by browsing both trees once systematically, based on a new metric called minExistDNN.
Proceedings ArticleDOI
Continuous Evaluation of Monochromatic and Bichromatic Reverse Nearest Neighbors
TL;DR: Extensive experimental analysis shows that IGERN is efficient, is scalable, and outperforms previous techniques for continuous reverse nearest neighbor queries.