1. Google’s Deep Web Crawler
- Dev PAtel

2. The Deep web There a big difference between Dark Web and Deep Web
Dark Web is a small part of Dark Web
Deep Web consists of content hidden behind HTML forms

3. Deep Web Approaches
Vertical search engine
Surfacing

4. HTML Form Processing

5. Surfacing
Goal – Achieving good content/coverage on individual sites while limiting the number of submissions
Selecting an appropriate set of query temples
Selecting appropriate input values

6. Challenges with Surfacing
Finding appropriate values
Forms have more than one value

7. Contributions Informativeness Test
Algorithm that efficiently traverses the query templets
Algorithm for predicting input values

8. ISIT

9. ISIt vs. Cp vs. Tp vs. Tpl

10. Conclusion First large scale Deep-Web surfacing system
Building block for exploring the Deep Web