Progressive top-k subarray query processing in array databases

D Choi, CS Park, YD Chung - Proceedings of the VLDB Endowment, 2019 - dl.acm.org
Unprecedented amounts of multidimensional array data are currently being generated in
many fields. These multidimensional array data naturally and efficiently fit into the array data …

Space filling approach for distributed processing of top-k dominating queries

D Amagata, T Hara, M Onizuka - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
A top-k dominating query returns k data objects that dominate the highest number of data
objects in a given dataset. This query provides us with a set of intuitively preferred data, thus …

Listmerge: Accelerating top-k aggregation queries over large number of lists

S Zhang, C Sun, Z He - International Conference on Database Systems for …, 2016 - Springer
Sorted list is widely used to feature indexing in a variety of applications, such as multimedia
database and information retrieval. Answering top-k aggregation queries on a set of lists …

Efficient processing of top-k dominating queries in distributed environments

D Amagata, Y Sasaki, T Hara, S Nishio - World Wide Web, 2016 - Springer
Due to the recent massive data generation, preference queries are becoming an
increasingly important for users because such queries retrieve only a small number of …

Distributed top-k query processing on multi-dimensional data with keywords

D Amagata, T Hara, S Nishio - … of the 27th International Conference on …, 2015 - dl.acm.org
As we are in the big data era, techniques for retrieving only user-desirable data objects from
massive and diverse datasets is being required. Ranking queries, eg, top-k queries, which …

Subscription-based data aggregation techniques for top-k monitoring queries

K Udomlamlert, T Hara, S Nishio - World Wide Web, 2017 - Springer
With the increase of data generation in distributed fashions such as peer-to-peer systems
and sensor networks, top-k query processing which is a way to aggregate only a small set of …

Efficient cluster-based top-k query routing with data replication in MANETs

D Amagata, T Hara, Y Sasaki, S Nishio - Soft Computing, 2017 - Springer
Top-k queries, which retrieve k data items with the best score, have been receiving
considerable attention because they can support many real life applications. In this paper …

Parallel skyline computation for frequent queries in distributed environment

RD Kulkarni, BF Momin - 2016 International Conference on …, 2016 - ieeexplore.ieee.org
Skyline queries produce the tuples which arepromising'on the dimensions of the user's
interest. The popular datasets often get queried by the users where dimensions of the user …

Top-k query processing with replication strategy in mobile ad hoc networks

Y Sasaki, T Hara, Y Ishikawa - 2018 19th IEEE International …, 2018 - ieeexplore.ieee.org
In this paper, we propose a method that fully combines top-k query processing with
replication strategy in mobile ad hoc networks (MANETs). The goal is to acquire perfect …

Efficient framework for processing top-k queries with replication in mobile ad hoc networks

Y Sasaki, T Hara, Y Ishikawa - GeoInformatica, 2019 - Springer
This article addresses the top-k query processing problem on mobile ad hoc networks
(MANETs). Top-k query processing is common to retrieve only highly important data items …