Metasearch engine: examples, principle of operation

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2018-03-25 16:13:15

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The Internet a couple of decades ago, only emerging in the most developed countries, at the present moment develops screenname pace, with nothing comparable. Daily amount of information is growing exponentially, presenting a dynamically variable data. Of course, a lot of the information you need to control. With this purpose at the time was introduced the search engine. But at the moment to handle the huge amount of information constantly coming into the Network, is not capable of any search engine. Especially if you take into account the difference in the search algorithms. After all, asking the query in different search engines, even equivalent to each other on the bases, the user can obtain very different results. So I had to improve the existing system. Using the aggregation results, the most developed of PS have implemented in the software additional resources - metasearch engine.

What does meta

In the Internet environment is a meta search engine called machine, able to process the user request and the results of the most common search engines. In other words, the interface is no different from that of a conventional search engine. But when it's set to a particular query, it uses its resources, and redirects the request to the leading search engines, and in the end the user sees a combined list of results from the databases of various search engines. In addition, for ease of use this type of search eliminated all duplicate links, which contributes to improved results data.

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Advantages

The Most important advantage, which can boast of a metasearch engine is the ability for a short time without any extra effort to get results from different search engines without duplicating links. Using only one tool for structuring information, it is possible to obtain a wider range of results from different sources, without requiring the use of many of the leading listings.metasearch engine

Many users often encounter such a problem that some rare information, documents or programs can be seen within the search engine and completely absent in another. Thus, the person starts to use it where it is, in fact, and found rare information. And again facing with a similar problem. A different query is selected, the search engine does not find, but it appears in the old, which earlier failed to meet expectations. This problem and eliminate in real life metasearch engine, giving users with the most balanced results.

Disadvantages

All the disadvantages of the metasearch derived from its benefits as their logical extension. Own index databases in the metasearch is not as such, so adding the URL to your own sites in it. Second, an important drawback is the rather sparse list of syntactic features, that is quite difficult to form an advanced information search.to metoposcopy systems include

Mostly used up to twenty different systems of data search, and, of course, their advanced search options are different. Of course, at the moment, already appear metasearch engine, developed on the principle of a new school. They take into account all the differences between the PS and, consequently, advanced search has more features. But while such systems is small, so the issue remains unresolved.

Varieties

Before then to consider the functionality of these systems, it is worth noting that there are differences in this type of search. The classic type discussed above and based on the fact that the SS processes the indexes of other search engines, and then transmits the information to the user, is considered the most common and popular. But considering the improvements and changes to such resources there are also other varieties of systems metasearch.metapoiskovaya bibliographic system

One of the most popular at the moment is a case in which information about the results of the query immersed in frames, and all data are within one metastasize. It should be noted that each frame in this case contains the original page of search engine, which was the selected target. In some cases, the open pair of pages, depending on the number selected by the user of the SS.metasearch engine list

Also a popular option «All in one search". That is, the user open the search form, through which he can access infinite number of different search engines. But, when making the request, he may apply to only one selected. In other words, one search-one search. It's not as convenient as, for example, in the classic version.

The Most common search engines-meta

Among systems of this kind the most popular classic platform was a hotel metasearch engine Vivisimo. She gained up to twelve million unique visitors per month. But it should be noted that popularity does not automatically validate the quality andthe comfort of use of the resource.

Old school

At the moment there are many classic metapoiskoviki. They all have a long history of creating, promoting, and existence. Almost each of these systems has the same operation principle, therefore, to consider them separately does not make sense.metasearch engine examples

So imagine the classic metasearch engine, a list of which is as obrazom:

  • Http://www.dogpile.com,
  • Http://www.metacrawler.com,
  • Http://www.search.com,
  • Http://www.vivissimo.com.

Also pay attention to IxQuick, MetaEureka, ZapMeta, WebCrawler and WindSeek.

The Main difference between them – is the interface. So choose the best among them is quite difficult, because each user finds a resource, depending on their own preferences. Just try to personally work with each of these systems, it is possible to understand which of them meets all the needs and meet expectations.

New school

At the moment, and creates a system of metasearch quite a different type from the so-called “new school”. The main difference with classic – the use of clustering. Technically, its implementation takes place in different forms. This is usually seen as an automatic selection of keywords and phrases added to the cloud of information indirectly related to the user query. Displays additional keys, which you can Refine your search to make it more narrow. In other words, metapoiskovaya bibliographic systems offer options to make the query more narrowly focused, thereby narrowing the scope of the search information and helping the user find the necessary data.

In addition, the systems allow a new generation to work more pronounced results. In other words, they use so-called search strategy, i.e. if necessary, the user can set the parameters.metasearch engine on the Internet

From the new generation to metoposcopy systems include: Clusty, Kartoo, Mooter, Izito, WebClust and iBoogie.

All that give search donors is the subject of ranking and evaluated by a meta search engine. This happens as soon as the system receives the results, the whole process is automatic. The online ranks, all descriptions of data found. Next is the re-analysis, the main criterion of which is to place all components of the issuance of the search to include all similar data found by the search engine in particular and other PS.

Search page

In addition to a full-fledged search engines, there are also metastasize, they are often called “all in one”. In their properties they are very similar to PS, but still are not. We have previously considered a metasearch engine, examples of pages that are created in their likeness: iTools, AllSearches, AdClick.ru and Searchalot. Despite their inferiority as PS, still many users prefer to search to use these resources. In fact, this is not surprising as these pages have very similar functionality and implement the same opportunities that are available, for example, in iBoogie.

Insights

At the moment there are several hundred resources, which is a metasearch engine. Every year the Internet is developing at a fast pace. As for individual choice, often it depends on subjective factors, for example, a good range of colors, or the presence of comfort of use of the interface. It is worth noting that some metapoiskoviki originally partially created, their functionality is not able to improve search and in some cases even exacerbate the process. Therefore the best users to pick out the appropriate resource.hotel metasearch engine vivisimo

Of Course, the Western search engine is largely ahead of domestic, and many use them as a tool for search. But not to mention the quality and usability of Rambler and Yandex not. These metapoiskoviki perfectly do their job and help you find the best results even for complex and rare queries. I would also like to draw attention to Nygma.of the Russian Federation. She very first appeared on the web in an intelligent system for metasearch. Also at the moment gaining popularity system for search in social networks under the name yoname.com.

In any case, the search information using metasearch engines are much more efficient classic the use of various PS. Because they show much more results and cover a large base of information in the network. And given how quickly the growing amount of content on the Internet, such systems will be very handy for normal Network operation.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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