9/27


P1. 
 SEO: Search Engine Optimization

 Optimize your web-page and cs345f13.html

- It's not a very good idea to not include an index.html at
  web.njit.edu/~UCID/index.html
  and have one instead at
  web.njit.edu/~UCID/homework1/index.html

- Title of web-page should be related to you eg "Web-page of  UCID"

- META TAG KEYWORDS :  No more than 4-5. Google would ignore (at your peril) more than
that (and you might not know if it would ignore the first few or the last few).
- META TAT KEYWORDS : Choose list wisely

- Anchor text such as "Click here", "Here" , an enthusiastic "Here!!" or even the "Anchor"
  are not very good choices. If you want to become a hub of information have
  "Web page of "   or "Course on metaenthusiastic" The more rare the words the better! 

- Oh and update the date on "This page last updated "... for both index.html and cs345f13.html


P2. (a AND b) OR (-a OR -b) 

NOT(a AND b) is NOT(a) OR NOT(b) i.e. -a OR -b
    a AND b                      is   a  AND B
disjunction is
      true                              ALL docs of corpus

            GOOGLE BING
   OR       YES    YES
  AND       YES    YES
 (space)    YES    YES
  -         YES    YES
  NOT       NO     YES?    

Note that even if they are operators OR, AND, NOT might also be treated as operands/index-terms
depending on the context . Eg <OR> even capitalized will never be an operator as there is no
left or right operand.

     One more reason is Google's HUMMIGBIRD technology (announced on Sep 26, 2013)

P3. 
 - Problem 3.(iv) is one indication that Boolean queries and Hummingbird type of queries might
be strange bedfellows. 
 - If NOT is an operator (and - is an operator for both Google and Bing)
   <a -a>  means  NOTHING/NO DOCUMENT   similarly to <a OR -a> meaning ALL
   <a NOT a> is <a -a>  if either is zero it means that one is an operator. 
                        if both are zero then both are operators.
                        if none are zero it means the engine is trying to return something by
                        doing something else than simple Boolean-based Search
   

 - Say
   <a>  gives 100 results
   <b>  gives 50
   < a b > give  ?
   < a b or> gives 30.

The <a b or> means all the documents that contain a AND b AND or  (ie.. those that also contain
a AND b.
Then <a b> should return at least as many documents are <a b or> not less!!