An Overview of Search Engines
Search engines are used all over the world, everyday, by millions of people. These devices are websites that collect and compile data from the internet so that other web pages, links, and different information can be found more easily. There are an unfathomable number of search engines on the internet. Some popular ones include Google, Yahoo, Dogpile, Infoseek, Lycos, Alta Vista, Excite, MSN Search and Hotbot. With so many websites to choose from, it makes it hard to decide which search engine is the best fit for your task at hand.
Each search engine gathers their listings in fundamentally two different ways. One system uses a crawler-based search engine that creates their listings automatically. In order to operate, the crawler-based search engine consists of three major elements; spider, index, and search engine software. The first element, spider, which is also called the crawler, is used to visit the web page, read it, and then follow the links to other pages within the site. When someone refers to a site as being “spidered” or “crawled”, this is what that means. In case of change in a web site, the spider returns frequently to look for these changes that may have occurred. The second part of the search engine is known as the index, which is basically a storage unit containing a copy of every web page that the spider had found. When the webpage ever changes, the index will be updated with the new information that had been found. In some cases when a website had made changes, the index may not store the new changes as fast as the spider did. In this case, until the information is updated, this web site is unable to access those searching with the search e...
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...ing and the advances that are being made day by day, search engines, along with many other materials, will only continue to improve. The future holds a lot for the people, and computers are doing wonders in our lifetime. Search Engines are the first place computer users start in order to find a specific topic they are looking for, and the information that is found by these search engines will only develop more and amplify our knowledge.
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"Calories in Marshmallows | Nutrition, Carbohydrate and Calorie Counter." Calories in Marshmallows | Nutrition, Carbohydrate and Calorie Counter. N.p., n.d. Web. 12 Jan. 2017
I think the main idea from the article “How Google, Wikipedia Have Changed Our Lives – For Better and Worse” who was written by Jennifer Woodard is how this generation of people rely entirely too much on the internet to find their answers for school and everyday life. When people used to research for information they were looking for they could spend hours in the library, reading countless books to find their answers and even find more then what they were looking for. Now when researching people are so used to finding out what they want to know it only takes seconds to type in in your phone and find on Google your answer. Learning before there was computers or google, you had to listen to the whole lecture to get an understanding of everything
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Various web-based companies have developed techniques to document their customer’s data, enabling them to provide a more enhanced web experience. One such method called “cookies,” employs Microsoft’s web browser, Internet Explorer. It traces the user’s habits. Cookies are pieces of text stored by the web browser that are sent back and forth every time the user accesses a web page. These can be tracked to follow web surfers’ actions. Cookies are used to store the user’s passwords making your life easier on banking sites and email accounts. Another technique used by popular search engines is to personalize the search results. Search engines such as Google sell the top search results to advertisers and are only paid when the search results are clicked on by users. Therefore, Google tries to produce the most relevant search results for their users with a feature called web history. Web history h...
In today’s fast paced technology, search engines have become vastly popular use for people’s daily routines. A search engine is an information retrieval system that allows someone to search the...
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First of all, where does the word “Google” come from? The name "Google" originated from a misspelling of "googol,” which refers to 10100, the number represented by a 1 followed by one hundred zeros. It found its way to the English language, now the verb "Google", was added to the Oxford English Dictionary in 2006, meaning, "to use the Google search engine to obtain information on the Internet." Their search engine was originally nicknamed "BackRub" because the system checked back links to estimate a site's importance. /// The start of Google was pretty much like the start of every website. It was a research project to these two Ph.D. Students where they hypothesized that a search engine that analyzed the relationships between websites would produce better ranking of results than existing techniques, which ranked results according to the number of times the search term appeared on a page. It was first related to the university’s domain, but then the traffic was so heavy that the university asked them to move their website to a domain outside the university. What made Google this popular was the speed it pulls out information, which is counted in parts of seconds. And also, the size of their data base, according to the instructor of our instructor in MIS class only 60% of data you found on Google are in other web search engines.
Search engines are not very complex in the way that they work. Each search engine sends out spiders to bots into web space going from link to link identifying all pages that it can. After the spiders get to a web page they generally index all the words on that page that are publicly available pages at the site. They then store this information into their databases and when you run a search it matches they key words you searched with the words on the page that the spider indexed. However when you are searching the web using a search engine, you are not searching the entire web as it is presently. You are looking at what the spiders indexed in the past.
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The Internet has made access to information easier. Information is stored efficiently and organized on the Internet. For example, instead of going to our local library, we can use Internet search engines. Simply by doing a search, we get thousands of results. The search engines use a ranking system to help us retrieve the most pertinent results in top order. Just a simple click and we have our information. Therefore, we can learn about anything, immediately. In a matter of moments, we can become an expert.