Effective search on_google
- 1. Presented by N. K. SINGH PGT Computer Science JNV Kalyani, Nadia
- 2. 2 Outline What is a Search Engine How does it work? Google Search Result Google Basic Search Operators in Google Try yourself Refine your Search Google Earth
- 3. What is a Search Engine? A web search engine is a software system that is designed to search for information on the World Wide Web. Examples: Google -- Google Search Engine is the best search engine in the world and it is also one of most popular product from Google. Bing-- Bing is Microsoft's answer to Google and it was launched in 2009. ... Yahoo, Baidu, AOL, Ask.com, Excite, DuckDuckGo. 3
- 4. How does a search engine work? A search engine scans its index of webpages for content related to your search. It makes this index using a program called a ‘web crawler’. This automatically browses the web and stores information about the pages it visits. Some websites stop web crawlers from visiting them. These pages will be left out of the index, along with pages that no-one links to. The information that the web crawler puts together is then used by search engines. It becomes the search engine’s index. Every webpage recommended by a search engine has been visited by a web crawler. 4
- 5. 5 Search terms are in bold
- 6. 6 Google Basics Upper case or lower case doesn't matter Word Order - Affects your search results. Phrases – put phrases in double quotes; most important words first Wind turbine energy vs Energy turbine wind vs “Energy turbine wind” Term Order--Google gives more priority to pages that have search terms in the same order as the query. Word Limit --Google limits queries to 32 words.
- 7. Going Directly to the First Result 7
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- 9. 9 Advanced Searches Search Operators in Google “Search Term” This operator searches for the exact phrase within speech marks only. e.g. : “I have a dream” The OR and | Operator term1 OR term2 (Term1 | Term2) with either term1 or term2 or both The – Operator -Term (Without term) • The ~ Operator ~Term (with term or one of its synonyms)
- 10. Search Operators in Google Continued….. The .. Operator number1..number2 E.g. Indian freedom movement 1850..1930 • The * Operator With the phrase (enclosed in quotes) and * replaced by one or more words. E.g. “google * my life” Filetype: Search for a particular type of document e.g. tax return filetype:pdf Exclude a filetype e.g. tax return -filetype:pdf 10
- 11. Using URL’s Limit to a domain (edu, com, etc) site:edu OR site:gov OR site:lib.co.us Mtech site:edu | site:org Search within a site site:cbse.nic.in “class 11 registration” inurl:”post” searches for word “post” anywhere in URL Search in the Title intitle:term restricts results to documents containing term in the title. e.g. flue intitle:help 11
- 12. 12 More on Google As a Dictionary – define: blended learning As a Calculator – 23 * 85 - 20 As a Converter 3259 seconds in hours 10km in miles -10C in F Foreign Exchange hkd in cny 4100 eur in hkd 1 $ in INR
- 13. Try it yourself Definition Define google Finding about Weather Weather Kolkata weather New Delhi Searching a specific file type: Google tips and filetype:pdf “academic writing” site:.edu.hk Calculation 23 * 85 - 20 100*3.14-cos(83)= Sin(90 degrees)-1= 13 Get number conversions •Miles to km •100F in C (Fahrenheit -> Celsius) Get currency conversions •1206 cny in hkd •6230 eur in hk Get the time •Time Tokyo •Time Perth •Time Kazakhstan •Sunrise new zealand
- 14. 14 Refine your search Refine your Search
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- 16. Search by voice 16 Search by voice
- 17. 17 Listening…
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- 20. Thank You!
Editor's Notes
- #7: http://www.google.com/support/websearch/bin/answer.py?answer=136861 E.g. Put quotation marks around words "[any word]" to search for an exact phrase in an exact order. Keep in mind that searching with quotes might exclude relevant results. For instance, a search for "Alexander Bell" will miss pages that refer to Alexander G. Bell.
- #10: How google works? http://www.googleguide.com/google_works.html