Supporting Open and Closed World Reasoning on the Web

2006 ◽  
pp. 149-163 ◽  
Author(s):  
Carlos Viegas Damásio ◽  
Anastasia Analyti ◽  
Grigoris Antoniou ◽  
Gerd Wagner
Keyword(s):  
Closed World ◽  
The Web

scholarly journals Tik-Tok: The Utility of Packet Timing in Website Fingerprinting Attacks

2020 ◽  
Vol 2020 (3) ◽  
pp. 5-24 ◽  
Author(s):  
Mohammad Saidur Rahman ◽  
Payap Sirinam ◽  
Nate Mathews ◽  
Kantha Girish Gangadhara ◽  
Matthew Wright
Keyword(s):  
Deep Learning ◽  
Information Leakage ◽  
Web Browsing ◽  
Directional Information ◽  
Low Level ◽  
Timing Information ◽  
Open World ◽  
Closed World ◽  
The Web

AbstractA passive local eavesdropper can leverage Website Fingerprinting (WF) to deanonymize the web browsing activity of Tor users. The value of timing information to WF has often been discounted in recent works due to the volatility of low-level timing information. In this paper, we more carefully examine the extent to which packet timing can be used to facilitate WF attacks. We first propose a new set of timing-related features based on burst-level characteristics to further identify more ways that timing patterns could be used by classifiers to identify sites. Then we evaluate the effectiveness of both raw timing and directional timing which is a combination of raw timing and direction in a deep-learning-based WF attack. Our closed-world evaluation shows that directional timing performs best in most of the settings we explored, achieving: (i) 98.4% in undefended Tor traffic; (ii) 93.5% on WTF-PAD traffic, several points higher than when only directional information is used; and (iii) 64.7% against onion sites, 12% higher than using only direction. Further evaluations in the open-world setting show small increases in both precision (+2%) and recall (+6%) with directional-timing on WTF-PAD traffic. To further investigate the value of timing information, we perform an information leakage analysis on our proposed handcrafted features. Our results show that while timing features leak less information than directional features, the information contained in each feature is mutually exclusive to one another and can thus improve the robustness of a classifier.

Gifts From the Web: Mentoring

2008 ◽  
Vol 11 (2) ◽  
pp. 83-85
Author(s):  
Howard Wilson
Keyword(s):  
The Web

Gifts from the Web: Service Learning

2005 ◽  
Vol 8 (1) ◽  
pp. 16-18
Author(s):  
Howard F. Wilson
Keyword(s):  
Service Learning ◽  
Web Service ◽  
The Web

Gifts From the Web: Critical Thinking

1999 ◽  
Vol 3 (2) ◽  
pp. 6-6
Author(s):  
Barbara Shadden
Keyword(s):  
Critical Thinking ◽  
The Web

Coding for Evaluation and Treatment

2008 ◽  
Vol 18 (1) ◽  
pp. 9-20 ◽  
Author(s):  
Mark Kander ◽  
Steve White
Keyword(s):  
Medical Record ◽  
Treatment Session ◽  
Accurate Diagnosis ◽  
Third Party ◽  
Speech Language Pathologists ◽  
Adequate Information ◽  
Diagnosis Codes ◽  
Coding Rules ◽  
Procedure Codes ◽  
The Web

Abstract This article explains the development and use of ICD-9-CM diagnosis codes, CPT procedure codes, and HCPCS supply/device codes. Examples of appropriate coding combinations, and Coding rules adopted by most third party payers are given. Additionally, references for complete code lists on the Web and a list of voice-related CPT code edits are included. The reader is given adequate information to report an evaluation or treatment session with accurate diagnosis, procedure, and supply/device codes. Speech-language pathologists can accurately code services when given adequate resources and rules and are encouraged to insert relevant codes in the medical record rather than depend on billing personnel to accurately provide this information. Consultation is available from the Division 3 Reimbursement Committee members and from [email protected] .

FDA Seeks Ways to Guide Health Info on the Web

2009 ◽  
Vol 42 (21) ◽  
pp. 76
Author(s):  
ALICIA AULT
Keyword(s):  
The Web
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