Jan 01, · Google Is The Most Widely Used Search Engine Marketing Essay. Info: words (6 pages) Essay Published: 1st Jan in Marketing. Reference this Share this: Facebook. Twitter. Reddit. LinkedIn. WhatsApp Google is the most widely used search engine and is the most successful company in online business today Essay Finder lets you search for essays by keyword OR by subject! Using our search engine to find an essay is fast and easy! Essay Delivery is available to students worldwide via email or fax! Custom Essays Even if you can't find your essay topic among our 50, examples, you can opt to have a customized essay written from scratch on any topic you need! Ordering Essays Apr 02, · Google is a vital component of the internet which makes the two more or less the same, thus most of its benefits are attributed to the internet hence Google’s importance as a search engine is not fully recognized. Although Google nowadays is a powerful search engine it had to reform in many ways which form part of its history
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And the most efficient way to solve the problem nowadays is using the search engine, which is a software system that could search information from the Internet automatically and provide query services for the users. Aims - Essay on search engine first purpose of the project is to implement a search engine, which essay on search engine a crawler, an inverted index, a graphical user interface, and a reporting facility.
And the second purpose essay on search engine to test which ranking algorithm more satisfies the needs of users in the essay on search engine engine of the project. Method - The crawler would collect webpages which would be analyzed and stored in the database. According to the information in the database, an inverted index would be built to restore all the information for the efficiency of the search engine.
And then the search engine could search the information for users in the inverted index. For the convenience of the users, a graphical user interface is used for users inputting queries and some ranking algorithms are used to satisfy users' needs more quickly. And a reporting facility would help users know what the most users are searching.
To test the search engine, the test case of the search engine in the essay on search engine would be the webpages of 'Durham University'.
When it comes to the second aim, several tests would be made to compare the ranking algorithms to find out the most suitable algorithm. Results ' The search engine would be evaluated using the unique general method which is based on the traditional famous evaluation method, and the method evaluates the search engine according to the capability, indexing method, indexing results, essay on search engine, and user burden.
Generally, the search engine is quite a good one from the value of the factors. And the differences between PAGERANK and HITS algorithms are also essay on search engine that the response time of PAGERANK is less while the HITS is a query-dependence algorithm. So the user would decide the algorithm based on their queries.
Conclusion ' In the project, a search engine has been made and as a platform, the ranking algorithms PAGERANK and HITS have been compared to let the search engine get the better results. Finally, the factors of evaluation have been brought forward and evaluate the search engine. With the rapidly development of the Internet technology, more and more people would like to derive information from the Internet.
There are four main characters of the information in the web Wei, : hugeness, heterogeneity, dynamics, and semi-structured. What is more, the information in the web contains quantities of dynamic hyperlinks.
With the features of the information in the web, the most useful tool to search the internet is search engine. Inthe earliest search engine 'World Wide Web Worm' indexed about thousand webpages, essay on search engine.
However, there have been million documents in the Internet, and the number of documents still increased by 1 million per day Yibing, According to the research by China Essay on search engine Network Information Center CNNIC in'The 33rd Statistics Report for China Internet Developing Situation', by December inthe number of Chinese webpages has been up to billion, up However, the Chinese webpages are just the tip of the submerged iceberg.
As a result, essay on search engine, people could only use the search engines to access the information they want among such a large amount of information. The report also says that by December inessay on search engine, the number of search engine users in China essay on search engine raised to million, up over 38 million on last year's same period, essay on search engine, and the increasing rate is 8. Therefore, how to search the useful and valuable information from essay on search engine a plenty of information has been an important issue in the field of information retrieval and data mining.
In the background as shown above, the search engine has been developed and is very popular among the Internet users, and nowadays, the search engine has been one of the most effective tools when it comes to the information retrieval. A search engine is a software system which merges almost every aspect of advanced technology, such as analysis of user behavior, natural language processing, data mining, information essay on search engine, and robot learning.
The search engine would provide query services for the users after it crawls, indexes and ranks the webpages Shuling, The query services include webpages, pictures, videos, or other types of documents. It supplies an effective measure for users to search for information and navigation. Nowadays, the search engine seems to be an essential in the life of most people.
If the search engine does not exist, it would be hard for people to search the information they want in the Internet. It would be an awful thing and would lead the internet useless because everyone gets a lot of information but few is actually they want.
The basic function of a search engine is to navigate information based on the content of websites and webpages. It crawls all kinds of resources and information, analyzes them automatically, gets the key words, essay on search engine, and builds database using index, essay on search engine.
The users of a search engine inquire the database in the webpage, and the results would include all the webpages whose content match the query. What is more, the search results would be sorted according to the importance of webpage and matching algorithm of key words Xuesong, According essay on search engine 'Knowledge Management' which is written by Jawadekar and Waman'a search engine works as the following order: webpage crawling, indexing, and searching'.
First of all, automated web crawler which follows every link on the web essay on search engine would retrieve and store information from the HTML markup of the webpages. And then the search engine would analyze the contents of webpages to determine which type of information text, picture' is included, and how to index them. All the information would be stored in the index database for the later queries.
Once the essay on search engine inputs the query in the webpage of search engine, the essay on search engine helps find information matching queries in the database as soon as possible. At the same time, it returns a list of best-matching webpages which contain the title and parts of text according to its criteria, essay on search engine.
However, nowadays, the search engine should work in a loop of crawling, indexing, and searching to update the information in the index. The data from the report of 'The 33rd Statistics Report for China Internet Developing Situation' shows that several most frequent Internet service are communication The above data proves that the four Internet services have been the essential part of most people's lives.
And because of the specific feature of the search engine, essay on search engine, it solves the problems of how to search the valuable and useful information for the users, which is the main reason why people are interested in it, and the search engine become the necessary tool in the people's daily life.
In the early age of the search engine technology development, the users pay more essay on search engine to whether the searched results are relevant to the query. Essay on search engine a result, the information could only be classified as relevant or not when it comes to the keywords in the query.
Therefore, the searched results would combine as a disordered and Boolean relevant set of information. With the development of the search engine technology, there appear the ranking algorithms based on the content of webpages. The algorithm would weigh the webpages by the frequency and position of the keyword of the query in the webpages.
Specifically, if a keyword appears more times, the relevance between the webpage and the query would be higher; and if the position of the keyword is more important, the authority of the webpage is essay on search engine. Therefore, the rank of the webpage in the result set would be higher.
Then, the ranking algorithms based on the hyperlinks analysis appear. The kind of algorithms takes the methodology of citation analysis in the traditional information index theory, which considers the hyperlinks as the quotation of the webpage, and if the times of a webpage is cited more, the authority value would be higher; and if a webpage is quoted by an authority webpage, the authority value of the webpage would be higher, and finally the rank of the webpage would be higher.
Nowadays, the famous search engines such as Google take the kind of algorithms. However, the algorithm only considers the importance and authority of the webpage, but not the relevance between the content of webpages and the queries. Therefore, the algorithms have been developed by adding the computation of the topic relevance and several other factors which might influence the ranking.
Nowadays, the ranking algorithms would exert influence on the evaluation of a search engine whether they could put the valuable and useful information essay on search engine the first of the results list, which is the core problem of the search engines for the users. The first purpose of the project is to implement a search engine, which includes a web crawler which could get all the resources and information of the webpages, an index which could save data from the crawler, essay on search engine, a graphic user interface which is convenient for users to input a query and return the result list to the users, essay on search engine, and several ranking algorithms which rank the search results.
The second purpose of the project is to compare the ranking algorithms PAGERANK and HITS to find their advantages and disadvantages and which ranking algorithm would be more suitable for the search engine in the project. Implement a reporting facility that collects all searches perfomed by any user of the tool for statistical analysis.
According to the criterion of ranking the results, the search engine could be classified as three generations Lina et al. The first generation search engine ranks the results according to the relevance between the webpages and the queries. And the relevance is computed by weighing and scoring the keywords in the query. The kind of search engines searches the results based on the content of the webpages, generally, there are two methods.
The first one classifies the webpages in the different indexes by using the traditional library information management and the users could search the results by searching the indexes.
The most representative search engine is Yahoo and becomes the foundation of other websites of search engines, essay on search engine. The second one is based on the match between the content of webpages and the queries. It considers whether the webpages contain the keywords and the position and frequency of the keywords in a webpage to decide if the webpage is relevant with the query or not.
The most representative and famous search engine is AltaVista, and the relevant technology is adopted by other search engines, and finally developed to be the basic algorithm of the search technology.
However, the first generation search engines has the obvious drawbacks, the first method promises the relevance, essay on search engine, but it is not automatic, as a result, it is not convenient for the users to use the search engine. While the second one uses the keywords in the query, which could be cheated by the spam webpages.
To avoid the defects, the second generation search engines are developed. Actually, the second generation search engines scores the importance of the webpage by whether it is clicked by the users and how long the users would like to spend in the webpage or the number of the in-hyperlinks in the webpage. Sincethe researchers have started to use the method of the hyperlinks which is originated by the method of citation analysis.
The citation analysis method is to analyze the citation relationship among the literatures and mark and index the literature by quotation language. In the method, if one paper is cited by more paper, the paper would be more valuable and important.
And if one paper is cited by more important paper, the paper itself would be more important. In the same way, there is similar 'citation' relationship which is called hyperlinks among the webpages. The signification of the hyperlink method is not only just a novel ranking algorithm, but also the algorithm is automatic, as a result, the algorithm allows users to search the big scale of the webpages, essay on search engine, at the same time, the algorithm also considers the relevance of the results and the speed of searching.
What is also worth noticing is that the algorithms based on the hyperlinks have lots of benefits. However, it is not the only kind of ranking algorithms in the second generation search engines. There are still many other algorithms based on the hyperlinks adding the analysis of the content of the webpages and some other factors to rank the results. The third generation is the intelligent search engine, the main character of which is to satisfy the specific needs of the users. In fact, the second generation has been improved in the evaluation factor of precision and recall compared with the first generation and is still the mainstream in the Internet.
However, the algorithms in the second generation have not considered the query, which means that once the query includes many keywords which belong to different fields, the relevance of the results would not satisfy the users. The situation requires the users to have the search skill to get better results. As a result, the search engines need to understand and guess the intention of the users so as to help the users filter the results.
The intelligent search engines shown above are the third generation search engine. Nowadays, essay on search engine, there are some search engines which are essentially different with the second search engines.
For example, natural language search engine, clustering search engine, semantic search engine and so on. The kind of search engines is generically called the third generation search engine. According to 'Search Engines Information Retrieval in Practice' W. Bruce,there are three 'big issues' in the field of information retrieval in the s, and the problems have not been solved nowadays. The major core problem is relevance, which is a basic conception of essay on search engine retrieval.
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