Tashkent State Pedagogical
University named after Nizomi
Department of applied
psychology. 2 OTM 201 PS
group Sadikova Mafrat.
Finding information. Using reference material. Searching
the internet efficiently
Plan:
1. Search concept;
2. Information search;
3. Information search by parameters;
4. Image search;
5. Search for music and movies;
Search System ("search engine" in English) - immmmmm
reba is a program designed to search for information stored
on a computer, a computer network, or the World Wide
Web. Internet search system is derived from Information
Retrieval system. This system creates a keyword index for
the database, and as a result, it is possible to display a list
of results in response to a search query that includes this
keyword. One of the advantages of a search engine is that
is to find information or information in a short time from
the computer memory and deliver it to the user. The main
tasks and components of the search system are as follows:
Create and update index (data structure in documents)
Carrying out search queries
Display the search result as meaningfully as possible, that
is, in an understandable form
Usually, data search is performed automatically, for
example, Webcrawler on the WWW, and reading all data
from a list of Indexes specified by the user on a separate
computer. Search engine types Search engines can be
divided into types according to several characteristics. The
following symbols are selected as examples. It is not
necessary to get all these characters when creating a new
search engine.
Type of Information Different search engines can search
for different types of information. First, you can indicate
the general type of data, for example, text, image, video,
audio file, etc. Results are also sorted based on these types.
When a text is searched, a part of this text with a keyword
is displayed as a result. Source of information Another type
of classification is the source of information found by the
search engine. Often, the name of the search engine
indicates the source from which it searches for information.
Web search engine - searches the WWW for information
Usenet search engine - searches for information on Usenet,
a medium (tool) of discussions distributed around the
world
Intranet search system - searches for information from
computers in the internal network of a particular
organization
Desktop search engine - information from the database of
a separate computer
The concept of search on the Internet means that each user
will have the opportunity to find the information or
material he needs through special search engines.
The Internet is an endless ocean of information.
Information is stored on the Internet in millions of Web
pages. In order to find the web page where the information
we need is stored, we need to know its address on the
Internet. But the Internet is enriched with new information
every hour. Also, some (outdated) information will be
removed from the Internet. Addresses of frequently used
Web pages on the Internet are published in special
directories. But you cannot get complete information from
them. Because to print the addresses of all the Web pages
on the Internet, a very large book is needed. By the time
this book is finished printing, a number of addresses on the
Internet will likely change. This problem was easily solved
with the creation of special search engines.
Internet users can search for websites located in the
Internet environment, their address and internal
information. This allows the user to effectively search and
quickly find the necessary information.
Search for information.
The Internet is such an environment that it contains a lot of
information in different forms and languages. In this case,
the problem of finding the necessary information from this
information arises. Every user on the Internet uses queries
consisting of one or more words in Uzbek, Russian,
English or other languages to search for information. That
is, information can be searched by its title or words and
sentences included in its structure. In this case, the user
enters a word or sentence related to the required
information into the search field of the Internet search
system and the search system is launched. After that, the
search system searches for information matching the word
or sentence entered by the user and creates a list of them on
the computer screen. Finally, the information in the list is
reviewed sequentially and the necessary ones are saved to
the computer.
Search information by parameters.
As we have seen, every user can search for the information
he needs through the Internet by its topic and by the word
or sentence in its content, but the information on the
Internet is so most likely, the mentioned method may not
work. In such cases, Internet search engines provide a
number of additional search methods, such as:
search for information by its language;
data search by its type (text, image, music, video);
data search by region;
data search by the date of its placement;
data search according to the Internet zone in which it is
located;
secure data retrieval.
Search for images. Images are graphical or pictorial
representations of information. There are many types of
graphic data on the Internet, namely: drawing (vector),
photo (raster), moving (animation) and compressed
images. Such graphic data does not contain textual
information.
It can be seen from this that it is possible to search data in
the form of a picture only by its name or type. Many
Internet search engines have a separate section for
searching information in the form of graphics or images,
through which you can search for any type of image by
name. For example, one of such search engines is shown in
the picture below.
Search for music and movies. In addition to text or image
data, the Internet contains many sources of music and video
data. Every user can listen to music, listen to the radio,
watch TV programs or video films through the Internet.
Radio broadcasting and television programs are broadcast
over the Internet by certain systems (servers) that provide
these types of services. It is enough to connect to this
system to listen to the radio or watch a TV show via the
Internet. But music and movies are stored as separate
material on computers connected to the Internet. In order
to listen to them, watch them or copy them to a computer,
it is necessary to find them first. Music and video materials
can be searched by their name or description, as well as
graphic (picture) materials. In order to search for music and
movies, enter the name of the material or a phrase related
to its description in the search engine field and start the
search engine. After that, the search engine creates a list of
websites with music and video materials that match the
entered phrase.
The websites in the list are reviewed by the user one by one
and the necessary materials are saved to the computer.
List of popular search engines:
1. Google – www.google.co
2. Yahoo - www.yahoo.com
3. Altavista – www.altavista.com
4. Yandex - www.yandex.ru
5. Rambler - www.rambler.ru
6. Aport – www.aport.ru
7. National search system - www.uz
8. Vse.uz - www.vse.uz
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