Wednesday, April 1, 2009

What is Right to Information?

Every citizen has a right to know how the Government is functioning. Right to Information empowers every citizen to seek any information from the Government, inspect any Government documents and seek certified photocopies thereof. Some laws on Right to Information also empower citizens to official inspect any Government work or to take sample of material used in any work.

Right to Information includes the right to:
  1. Inspect works, documents, records.
  2. Take notes, extracts or certified copies of documents or records.
  3. Take certified samples of material.
  4. Obtain information in form of printouts, diskettes, floppies, tapes, video , cassettes or in any other electronic mode or through printouts.

"information" means any material in any form, including records, documents, memos, e-mails, opinions, advices, press releases, circulars, orders, logbooks, contracts, reports, papers, samples, models, data material held in any electronic form and information relating to any private body which can be accessed by a public authority under any other law for the time being in force.


"record" includes:

a) Any document, manuscript and file
b) Any microfilm, microfiche, and facsimile copy of a document
c) Any reproduction of image or images embodied in such microfilm (whether enlarged or not); and
d) Any other material produced by a computer or any other device;

An applicant cannot ask for opinions/advice/views under the RTI Act, unless the opinion/advice/view is already on "record". 

However, under Section 4(1)(d), an applicant can ask for "reasons" behind a administrative or quasi judicial decision of a public authority, especially if he is a "affected person".

To know more about RTI visit www.rtiindia.org

Saturday, March 28, 2009

How do Search Engines Work?

Search engines do not really search the World Wide Web directly. Each one searches a database of web pages that it has harvested and cached. When you use a search engine, you are always searching a somewhat stale copy of the real web page. When you click on links provided in a search engine's search results, you retrieve the current version of the page.

Search engine databases are selected and built by computer robot programs called spiders. These "crawl" the web, finding pages for potential inclusion by following the links in the pages they already have in their database. They cannot use imagination or enter terms in search boxes that they find on the web.

If a web page is never linked from any other page, search engine spiders cannot find it. The only way a brand new page can get into a search engine is for other pages to link to it, or for a human to submit its URL for inclusion. All major search engines offer ways to do this.

After spiders find pages, they pass them on to another computer program for "indexing." This program identifies the text, links, and other content in the page and stores it in the search engine database's files so that the database can be searched by keyword and whatever more advanced approaches are offered, and the page will be found if your search matches its content.

Many web pages are excluded from most search engines by policy. The contents of most of the searchable databases mounted on the web, such as library catalogs and article databases, are excluded because search engine spiders cannot access them. All this material is referred to as the "Invisible Web" -- what you don't see in search engine results.