Lecture 4 Flashcards
What are searchable keywords also known as?
Tokens
The results from a search in google are the ________ of the results for individual tokens.
intersection
What is a search engine?
A program that searches for and identifies items in a database that correspond to keywords or characters specified by the user
What is indexing information?
Organizing it
What is a crawler?
Program that systematically browses the World Wide Web in order to create an index of data.
What does it mean when a document is parsed?
when we read through it extracting key pieces of information based on predefined identifiers.
When we search for something quotes what does the search engine do?
It searches for exactly that content
The program counter holds the ______ instruction.
next
What does the general register serve as?
A place where the CPU can quickly grab information.
Ultra fast memory segments for holding operands and immediately critical information
What does ALU stand for?
Arithmetic and Logic Unit
Where are instructions fetched from?
RAM
What is the Von Neumann Model?
1) Fetch instruction from memory - IF
2) Decode (understand) instruction - ID
3) Fetch Data from Memory (if needed) - DF
4) Execute the instruction - EX
5) Return the value back to memory - RR
What is an index of data?
A set of keywords (tokens) which are used to identify a specific page
What is querying?
Searching for all URLs associated with the keywords that are put into a search engine. The resulting URLs are the intersection of the results for the individual tokens.
After pages are retrieved for query, how are they organized?
Through a page rank system
