CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 12511 > Article
Paper
3 February 2023 Querying specific message from chat logs of suspects based on keywords expansion
Wen Xiao, Wei Xu
Author Affiliations +
Proceedings Volume 12511, Third International Conference on Computer Vision and Data Mining (ICCVDM 2022); 1251105 (2023) https://doi.org/10.1117/12.2660080
Event: Third International Conference on Computer Vision and Data Mining (ICCVDM 2022), 2022, Hulun Buir, China
Abstract
During criminal investigations, chat logs on the suspect's mobile phone are an important information source for investigation. However, some clues involved in the case are hidden in many irrelevant chat messages. Case investigators can generally locate the specific information they need through keyword search, but at the initial stage, they may not be very clear about the specific keywords, which leads to missing some messages in the search results. Therefore, a query strategy based on keyword expansion is proposed in this paper. Firstly, the relevant documents are obtained by using the initial keywords, and the ratio of document frequency (rdf) is defined according to the frequency distribution of words in the documents. Then the values of rdf are sorted to get the expanded keywords, and finally, the weighted BM25 algorithm is used for further queries. Experiments show that the proposed method can improve the query results.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Wen Xiao and Wei Xu "Querying specific message from chat logs of suspects based on keywords expansion", Proc. SPIE 12511, Third International Conference on Computer Vision and Data Mining (ICCVDM 2022), 1251105 (3 February 2023); https://doi.org/10.1117/12.2660080
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 5 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Feature selection
Forensic science
Mining
Mobile communications
Scientific research
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top