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논문 기본 정보

자료유형
학술저널
저자정보
Hyuntae Kim (Kumoh National Institute of Technology) Junhyung Byun (Kumoh National Institute of Technology) Yoseph Na (Kumoh National Institute of Technology) Yuchul Jung (Kumoh National Institute of Technology)
저널정보
한국정보기술학회 JOURNAL OF ADVANCED INFORMATION TECHNOLOGY AND CONVERGENCE Journal of Advanced Information Technology and Convergence Vol.10 No.2
발행연도
2020.12
수록면
15 - 31 (17page)
DOI
10.14801/JAITC.2020.10.2.15

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초록· 키워드

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Various websites have been created due to the increased use of the Internet, and the number of documents distributed through these websites has increased proportionally. However, it is not easy to collect newly updated documents rapidly. Web crawling methods have been used to continuously collect and manage new documents, whereas existing crawling systems applying a single node demonstrate limited performances. Furthermore, crawlers applying distribution methods exhibit a problem related to effective node management for crawling.
This study proposes an efficient distributed crawler through stepwise crawling node allocation, which identifies websites" properties and establishes crawling policies based on the properties identified to collect a large number of documents from multiple websites. The proposed crawler can calculate the number of documents included in a website, compare data collection time and the amount of data collected based on the number of nodes allocated to a specific website by repeatedly visiting the website, and automatically allocate the optimal number of nodes to each website for crawling. An experiment is conducted where the proposed and single-node methods are applied to 12 different websites; the experimental result indicates that the proposed crawler"s data collection time decreased significantly compared with that of a single node crawler. This result is obtained because the proposed crawler applied data collection policies according to websites. Besides, it is confirmed that the work rate of the proposed model increased.

목차

Abstract
1. Introduction
2. Related works
3. The Proposed Scheme
4. Experimental Results
5. Discussion
6. Conclusions
References

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