Optimal Representation for Web and Social Network Graphs Based on <inline-formula> <tex-math notation="LaTeX">${K}^{2}$ </tex-math></inline-formula>-Tree
With the rapid growth of the Internet, the scale of graphs has increased dramatically, which poses special challenges in representing both web graphs and social network graphs. In the adjacency matrix of web and social network graphs, only a very small proportion of the elements is “1&...
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doaj-f8cf2162fee94fb1af4b5d7188771d4f2021-03-29T22:33:21ZengIEEEIEEE Access2169-35362019-01-017529455295410.1109/ACCESS.2019.29121728694770Optimal Representation for Web and Social Network Graphs Based on <inline-formula> <tex-math notation="LaTeX">${K}^{2}$ </tex-math></inline-formula>-TreeFengying Li0https://orcid.org/0000-0002-8531-0125Qi Zhang1Tianlong Gu2Rongsheng Dong3https://orcid.org/0000-0002-0540-4659Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, ChinaGuangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, ChinaGuangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, ChinaGuangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, ChinaWith the rapid growth of the Internet, the scale of graphs has increased dramatically, which poses special challenges in representing both web graphs and social network graphs. In the adjacency matrix of web and social network graphs, only a very small proportion of the elements is “1” s. Furthermore, we find that using the aggregation of scattered 1 s to form a high density of adjacency matrices is beneficial to the compression of storage space. Based on these findings, we propose the DGC-K<sup>2</sup>-tree compression approach based on K<sup>2</sup>-tree, which can greatly increase the density of 1 s among the existing algorithms and adequately compress the blank area in the adjacency matrix. Then, we design a query algorithm for this mechanism to support the operation on the graph. The experimental results show that compared with the state-of-the-art algorithms, including the K<sup>2</sup>-tree based on a diagonal clustering mechanism (K<sup>2</sup>-BDC), the K<sup>2</sup>-tree, Re-Pair, and LZ78, our approach achieves better compression ratio and shorter time consumption. In terms of storage efficiency, our approach reduces the space by an average of 34.07% compared to the best performing algorithm K<sup>2</sup>-BDC. In terms of query efficiency, our approach reduces the time by an average of 80.63% compared to the best performing algorithm LZ78.https://ieeexplore.ieee.org/document/8694770/Web graphsocial network graphcompression representation<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">K</italic>²-tree |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fengying Li Qi Zhang Tianlong Gu Rongsheng Dong |
spellingShingle |
Fengying Li Qi Zhang Tianlong Gu Rongsheng Dong Optimal Representation for Web and Social Network Graphs Based on <inline-formula> <tex-math notation="LaTeX">${K}^{2}$ </tex-math></inline-formula>-Tree IEEE Access Web graph social network graph compression representation <italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">K</italic>²-tree |
author_facet |
Fengying Li Qi Zhang Tianlong Gu Rongsheng Dong |
author_sort |
Fengying Li |
title |
Optimal Representation for Web and Social Network Graphs Based on <inline-formula> <tex-math notation="LaTeX">${K}^{2}$ </tex-math></inline-formula>-Tree |
title_short |
Optimal Representation for Web and Social Network Graphs Based on <inline-formula> <tex-math notation="LaTeX">${K}^{2}$ </tex-math></inline-formula>-Tree |
title_full |
Optimal Representation for Web and Social Network Graphs Based on <inline-formula> <tex-math notation="LaTeX">${K}^{2}$ </tex-math></inline-formula>-Tree |
title_fullStr |
Optimal Representation for Web and Social Network Graphs Based on <inline-formula> <tex-math notation="LaTeX">${K}^{2}$ </tex-math></inline-formula>-Tree |
title_full_unstemmed |
Optimal Representation for Web and Social Network Graphs Based on <inline-formula> <tex-math notation="LaTeX">${K}^{2}$ </tex-math></inline-formula>-Tree |
title_sort |
optimal representation for web and social network graphs based on <inline-formula> <tex-math notation="latex">${k}^{2}$ </tex-math></inline-formula>-tree |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2019-01-01 |
description |
With the rapid growth of the Internet, the scale of graphs has increased dramatically, which poses special challenges in representing both web graphs and social network graphs. In the adjacency matrix of web and social network graphs, only a very small proportion of the elements is “1” s. Furthermore, we find that using the aggregation of scattered 1 s to form a high density of adjacency matrices is beneficial to the compression of storage space. Based on these findings, we propose the DGC-K<sup>2</sup>-tree compression approach based on K<sup>2</sup>-tree, which can greatly increase the density of 1 s among the existing algorithms and adequately compress the blank area in the adjacency matrix. Then, we design a query algorithm for this mechanism to support the operation on the graph. The experimental results show that compared with the state-of-the-art algorithms, including the K<sup>2</sup>-tree based on a diagonal clustering mechanism (K<sup>2</sup>-BDC), the K<sup>2</sup>-tree, Re-Pair, and LZ78, our approach achieves better compression ratio and shorter time consumption. In terms of storage efficiency, our approach reduces the space by an average of 34.07% compared to the best performing algorithm K<sup>2</sup>-BDC. In terms of query efficiency, our approach reduces the time by an average of 80.63% compared to the best performing algorithm LZ78. |
topic |
Web graph social network graph compression representation <italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">K</italic>²-tree |
url |
https://ieeexplore.ieee.org/document/8694770/ |
work_keys_str_mv |
AT fengyingli optimalrepresentationforwebandsocialnetworkgraphsbasedoninlineformulatexmathnotationlatexk2texmathinlineformulatree AT qizhang optimalrepresentationforwebandsocialnetworkgraphsbasedoninlineformulatexmathnotationlatexk2texmathinlineformulatree AT tianlonggu optimalrepresentationforwebandsocialnetworkgraphsbasedoninlineformulatexmathnotationlatexk2texmathinlineformulatree AT rongshengdong optimalrepresentationforwebandsocialnetworkgraphsbasedoninlineformulatexmathnotationlatexk2texmathinlineformulatree |
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