Search Engine - a utilizer interface program designed to probe and exhibit information according to the utilizer's query.
Types of search engines:
We distinguish the following ecumenical search systems:
Search engine structure
The term "search engine" is generally understood as an ecumenical, macrocosmic search engine and will perpetuate to refer to such systems. The structure of most search engines is homogeneous and there are no consequential distinctions between them.
The component of the search engine that you visually perceive is a web page with an interface for querying the search engine. There are withal search results for your query. Software designed for indexing and probing information search algorithm; Database of website addresses and information about internet and intranet resources.
Search algorithm is an active part of the search engine, and its tasks include:
Composing search results.
A database (index) used to store kenned search engines for accommodation addresses and their pages, as well as content, links and other information contained therein. The index is subdivided into chapters and placed on many servers located all over the world (for astronomically immense search engines) connected to the network.
Principles of search engine functioning indexation
The search algorithm works perpetually 24 hours a day by scanning the ecumenical network for incipient resources, by going through the links found on them, and by integrating (indexing) incipient addresses and information to the database (index).
Parties subject to indexation should meet certain requisites for:
Engender a page ranking and exhibit search results
In replication to a utilizer query, search robots scan the index of the search system, find and suggest to the utilizer the addresses of the pages in which the query word or coalescence of words is a key phrase. If keyword phrases do not match the query, the search engine culls pages with the most kindred content. Since conventionally the number of pages that match the query is profoundly and immensely colossal, afore the search engines becomes the task of piling up from those pages the germane ranking. In other words, because search algorithms need to provide the utilizer with the most pertinent answer to the query (which is not generally possible due to the brobdingnagian amount of search queries), the search engine has decided to exhibit results in an orderly manner. The form of ranking list of addresses, the bellwethers of which are the accommodations with the best parameters, and further in the directory are placed sites with increasingly worse bespeakers. Search results are a list of web addresses. Withal, there is a brief text about the page content, the soi-disant snippet.
Penalties imposed by search engines
In the case of search robots finding search engines utilizing unlawful techniques, the following sanctions may apply:
Priorities in search engine development
The perpetually growing number of pages puts the system down