Outline What are Search Engines Technical terms associated with SE Basic Web Search Engine Types of Search Engines Working of Search Engines Directories Crawler based Search Engines SEO
…..cont’d Keyword Search Operators Various search Engines Comparison Searching Technique 10 Do’s and Don’ts while Searching
What are Search Engines? A search engine is a sophisticated piece of software, accessed through a page on a website that allows you to search the web by entering search queries into a search box. The search engine allows one to ask for content meeting specific criteria and retrieving a list of references that match those criteria. Search engines use regularly updated indexes to operate quickly and efficiently.
Technical terms associated with SE Crawling – Follow links to find information Indexing – Record what words appear where Ranking – What information is a good match to a user query? Displaying – Find a good format for the information Serving – Handle queries, find pages, display results
A. Frank-T.Sharon 6 Basic Web Search Engine Administrator Users Search Engine Search Engine Retrieval Gathering WWW database
Types of Search Engines Basic Search Engines assembled by software -- automated "spiders" or softbots. Directory/Guide Hierarchical list of subject categories -- assembled by people (“humanly-compiled”). Meta-Search Engines Uses several basic search engines in parallel. Special(ty) Search Engines/Tools Dedicated to a focused domain/community/media. Popularity Search Engines Use popularity link/usage analysis.
Working of Search Engines Directories Crawler-based search engines
Directories Unlike search engines, which use special software to locate and index sites, directories are compiled and maintained by humans. Directories often consist of a categorised list of links to other sites to which you can add your own site.
Crawler based Search Engines Crawler-based search engines use sophisticated pieces of software called spiders or robots to search and index web pages These spiders are constantly at work, crawling around the web, locating pages, and taking snapshots of those pages to be cached or stored on the search engine’s servers They are so sophisticated that they can follow links from one page to another and from one site to another
Crawlers based Search Engines Google is a prominent example of a crawler-based search engine. Yahoo features both directories and crawler-based search engines. Metadata Metadata Metadata Metadata Metadata Metadata Crawlers collecting data
SEO…… Technical part of web marketing.
Keyword Search Operators Plus (+) Operator Minus (-) operator Related (~) operator OR operator
Plus (+) Operator Figure (a)
Minus (-) operator
Related (~) operator
Various Search Engines
Searching Techniques Proximity Searching Ability to specify how close within a record multiple terms should be to each other Phrase Searching Requires terms to be in the exact order specified within the phrase markings. The default standard for identifying phrases is to use double quotes (" ") to surround the phrase.
10 Do’s and Don’ts while Searching
Use apt keywords.
Use ‘+’ sign while searching for multiple
Use quotes to search for exact phrases on the net.
Use specific portals for better results.
Don’t rely much on sponsored links.
Avoid using form words.
Check for authenticity of source.
Don’t stop at the first page of results .
Don’t use just one search engine.
How to add Search Engine on your browsers
Customized Search Engines Why can’t we just use a normal search engine?
Focus your learners
Protect younger learners against
possible “bad sites”
Act as a knowledge filter
Make good sites more accessible
Eliminate possible millions of irrelevant results
Guide learners towards educator-evaluated web sources
Create your own search engine
Open your browser and type in (or click):
Sign into Google using your username and password or Register for an account
If you already have a Gmail Account you can sign into any Google application with your username and password
To use all the lovely Google stuff you need an account!
Create your own search engine
Decide on a name for your search engine.
Provide a brief description of exactly where your search engine will be searching
Restrict the sites to those you choose
By choosing a good search engine name, it will make it easy for other teachers to find it easily and re-use it as well!
Type in the sites that you want to include (1 per line)
You will be able to edit this list and add more sites later.
Continued…… You will now be able to share the link to your search engine or you can even embed it on your school/class website or blog