Week 7 Flashcards
How do you market your website?
Include the web address for your new site:
- Part of your signature on outgoing email
- On all printed material: letterhead, business cards, labels, catalogues, posters, media advertisements
What should you aim your website to be in when your customers search using search engines for your site?
In the “first ten listed”
What is the most popular search engine?
What % of the market does the most popular search engine have?
Almost 72% of search engine market with Bing in 2nd
What is the first of 2 parts on how a search engine works?
Finding all the data on the Web and building a database. Similar to Librarians getting new books, cataloguing them and putting them in the library!
What is the second of 2 parts on how a search engine works?
Given keywords from a searcher (person looking for a topic), returning the “BEST/MOST APPROPRIATE” pages. Similar to a patron walking into a library, going to the card catalogue and looking for a book.
What are the 2 parts of a search enging?
- Building the search database
- How does the search engine decide which pages to return to the searcher?
What are web crawlers or web spiders?
Web Crawlers or Web Spiders crawl the internet constantly, going from web page to web page via links, looking at all the words on the page, building an index (database):
What does an index contain?
Contains list of alphabetical list of words it finds, where within the page the word was and the links (URL to the page) where it found the words.
What are words called in index?
Words are called keywords
How is the index stored?
In a really big database
How does the search engine decide which pages to return to the searcher?
Uses index to decide which pages have the given keywords
Does every engine use the same algorithm to decide order of displaying pages?
Every engine uses slightly different algorithms to decide the order of displaying the returned pages
What algorithm does Google use?
Google uses the “PageRank” algorithm as ONE of the factors to decide what order to present the pages it found to you.
Around 1990 there was no index so what had to be done?
Search EVERYTHING (like looking for a needle in a haystack or looking through a book page by page for one word)
Around 1990, how were webpages returned?
Just by the file names of the sites and titles stored in the index but NOT the content, e.g. if you searched for “Dog”, you would get things like: www.uwo.ca/dogs.html
www.uoft.ca/mydogisgreat.html
When searching around the 1990’s you may have found URL with a title under what condition?
Some sites only matched titles if the match was exact (e.g. would only find paper above if user had search for “The Black Dog”)
Before Google if your page wasn’t in the index what happened?
It wouldn’t be able to find your page
What happened when the World wide Web came in 1991?
- All papers/files were now all stored in the same standardized manner=html files
- Key feature of his initial design=MUST HAVE HYPERLINKS!
- User is in control and can jump from one paper to another paper
Who developed the World Wide Web, when did they develop it and what problem where they trying to solve?
Developed by Tim Berners Lee in Geneva Switzerland
Problem: data was difficult to access and exchange for research
What criteria did Tim Berners Lee work from when developing the WWW?
- System must be flexible, work in multiple operating systems
- System must be capable of recording links between objects
- System must make it easy to enter and correct information.
Around 1994 some software would allow users to do what?
Submit pages they wanted included in the index
In 1994, what did Yahoo begin as?
- Began as a collection of good webpages that included man-made descriptions with each URL.
- Had a searchable man-made directory.
- Commercial sites could pay to be included
In 1994 the indexes that were built became to include what data from the webpage?
ALL the data (not just the title or URL)