CAVA: A Visual Analytics System for Exploratory Columnar Data Augmentation Using Knowledge Graphs
CAVA: A Visual Analytics System for Exploratory Columnar Data Augmentation Using Knowledge Graphs
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CAVA:使用知识图进行探索性柱状数据增强的可视化分析系统
DOI:
10.1109/tvcg.2020.3030443
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发表时间:
2021
影响因子:
5.2
通讯作者:
Chang, Remco
中科院分区:
文献类型:
--
作者:
Cashman, Dylan;Xu, Shenyu;Das, Subhajit;Heimerl, Florian;Liu, Cong;Humayoun, Shah Rukh;Gleicher, Michael;Endert, Alex;Chang, Remco
Most visual analytics systems assume that all foraging for data happens before the analytics process; once analysis begins, the set of data attributes considered is fixed. Such separation of data construction from analysis precludes iteration that can enable foraging informed by the needs that arise in-situ during the analysis. The separation of the foraging loop from the data analysis tasks can limit the pace and scope of analysis. In this paper, we present CAVA, a system that integrates data curation and data augmentation with the traditional data exploration and analysis tasks, enabling information foraging in-situ during analysis. Identifying attributes to add to the dataset is difficult because it requires human knowledge to determine which available attributes will be helpful for the ensuing analytical tasks. CAVA crawls knowledge graphs to provide users with a a broad set of attributes drawn from external data to choose from. Users can then specify complex operations on knowledge graphs to construct additional attributes. CAVA shows how visual analytics can help users forage for attributes by letting users visually explore the set of available data, and by serving as an interface for query construction. It also provides visualizations of the knowledge graph itself to help users understand complex joins such as multi-hop aggregations. We assess the ability of our system to enable users to perform complex data combinations without programming in a user study over two datasets. We then demonstrate the generalizability of CAVA through two additional usage scenarios. The results of the evaluation confirm that CAVA is effective in helping the user perform data foraging that leads to improved analysis outcomes, and offer evidence in support of integrating data augmentation as a part of the visual analytics pipeline.
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DOI:
10.1145/3020165.3020178
发表时间:
2017
期刊:
Proceedings of the 2017 Conference on Conference Human Information Interaction and Retrieval
影响因子:
--
作者:
O. Hoeber;Anoop Sarkar;Andrei Vacariu;M. Whitney;Manali Gaikwad;Gursimran Kaur
通讯作者:
Gursimran Kaur
影响因子:
8.1
作者:
Shorten, Connor;Khoshgoftaar, Taghi M.
通讯作者:
Khoshgoftaar, Taghi M.
DOI:
10.4135/9781071812082.n626
发表时间:
2022
期刊:
The SAGE Encyclopedia of Research Design
影响因子:
--
作者:
R. Likert
通讯作者:
R. Likert
DOI:
10.1109/tvcg.2018.2864838
发表时间:
2019-01-01
影响因子:
5.2
作者:
Sacha, Dominik;Kraus, Matthias;Chen, Min
通讯作者:
Chen, Min
DOI:
--
发表时间:
2018
期刊:
ACM/IEEE Joint Conference on Digital Libraries
影响因子:
--
作者:
F. Nanni;Simone Paolo Ponzetto;Laura Dietz
通讯作者:
Laura Dietz