02 Web Search
BIT 330 Class Notes – September 14, 2009
I. Signing Up for Assignments
- Login to Wikidot, then return to www.howcanifindit.com
- Direct your browser to the bottom of the assignment page and click “Edit”
- Enter your username into the slot you would like in following format
- [ [*user insert username] ]
II. Twitter Updates

- Get a twitter account
- Watch out for assignment update/reminders on Twitter
- Use Twitter as a resource to send questions to Prof. Scott Moore
III. Search Process
- Future of Search: Tools for search are constantly being updated
- Experts used to be the only wielders of information, “the old way”
- Experts are now You & Me, the world of wikis supports this new era of information
- Search Tools: search engines interacts with document(s)
- Process: Query from User > Interacts with Document Set > Output Query Results > Possible Further Interaction between User and Engine
- Search Engines Technology – almost all search engines are “Default And”
- General rule, add “more” to end of query to get more broad results
- Google Spider – Program to constantly search for new information as it is published online, constantly keeping Google on the cutting edge of information awareness online
- Directory/Meta-Search Engines – Gathers information about websites, does not keep whole website on database
- Main 3 Engines we will look at: Google, Bing, Ask
- Search Terms and Operators
- ~ [tilda]: searches for synonyms
- “ ”: phrase search
- –: terms to exclude
- +: search exactly as is
- Evaluating a Search Engine’s Performance
- Query results will have an undefined return of both relevant and irrelevant results
- All results of a search engine query are the retrieved results
- Now there will be some relevant documents that are not returned and some irrelevant articles that will be retrieved
- Search Experience – How to judge the relevance of a search engine - Important for Exam!
- Query – automation, variety & usefulness of special queries
- Results – content, format of results, delivery form
- Subset of Web – opacity, target, quality of coverage
- Searchable Information – how frequently is the information updated?
- Search Engine – quality of search experience, responsiveness
page revision: 11, last edited: 07 Dec 2009 15:53