WEB SEARCHING

Web Searching : An act of looking for information in computer databases or network
⇘
  4 types: 1) Directories → web guide (hierarchical representation of hyperlinks)
                                       → enormous collection links to sites, arranged in different categories
                                       → top level = wide range of very general topics
                                       → each topic contains hyperlinks of more specialized subtopic

      * popular directories
        https://searchenginewatch.com/sew/how-to/2048976/major-search-engines-directories



                2) Search Engines → computer program that allows users to submit query that consists of
                                                   word or phrase and searches databases
                 
                3) Meta-search Engines → use of more than one other search engine to complete the search
                                                       → the results are ranked according to how well they match with
                                                            the query
                                                       → Adv : a single query can access lot of search engines
                                                            Disadv : a lot of matches will not be suitable for you
                 
                 4) Yellow Pages → allows users to lookup information about individuals
                                            → to track down telephone numbers, email addresses
                                            → contain certain information about businesses

Web Browser  : Can be defined as a soft ware application used to locate and display web

     * popular browser
http://www.techradar.com/news/software/applications/best-browser-which-should-you-be-using-932466




Searching Technique :

• Pattern Matching Queries (Fuzzy Query)

- can enter ''ungrammatical sentence'', ''incomplete sentence fragments''. ''nonsence words''

- search engines gets collection of keywords

- required keyword "+"

- prohibited keyword "-"

• Boolean Queries

- query that consists keywords but with logical operators (AND, OR, NOT)

Find a search engine that meet these conditions: - user-friendly interface

                                                                              - easy-to-understand documentation

                                                                              - convenient to access

                                                                              - a large indexed database

SEARCHING......

= user interface : allows to type a query and displays the results

= searcher : engine searches the database for matching your query 

= evaluator : engine assigns scores to the retrieved information

= gatherer : component that travels the WEB and collects information

= indexer : engine that categorizes that data collected by the gatherer

Web Resource Evaluation 

Evaluation Criteria  ⇒ Authority

                                ⇒ Accuracy

                                ⇒ Objectivity

                                ⇒ Currency

                                ⇒ Coverage