According to? research, 1997, 901801 collection of web document number more than most, so it is more outstanding, is the most comprehensive coverage of the search engine. The news of the company in the world is big news. When 901801 market director wear d-general Richard (3) catch Qu rainbow (remember Yang) have proudly say: “we provide the largest index a of the report doesn’t let us surprised.” in fact, they naturally have surprised place. The report says 901801 cover only the world wide web, this is not good news. 347. That is, the web page 667. It is invisible. The most popular search engine is 1 813, it ranked as the second, it is the only search machine sniffer to 28. Yi content like this. And the search engine, the cover only 27.. Imagine how their response, “in all fairness, I don’t believe this kind of report. 1 we do not quite the attention, we pay attention to the number of the quality this speech is 4 (3) 8 company rajiv ‘horse generation “of the harp said.

Broken the world wide web We thought, the XIX: research report published, each big search engine will add great strength, improve its coverage. The results are not. After a year, in February 1999, Lawrence and giles to calculate the scale of the world wide web, found that more than doubled, document the total to 800 million. However the search engine but didn’t keep up with this? Add long pace. In fact, their coverage be worse. This time, ranked first is oil, covering the 160/0 of the world wide web. 901801 and 1813 people in 11 “is now: their coverage rates were back at 11 less. And less. When 000 15. 16 coverage rate is 1. 8 . All these search engines can add up to cover only the network 40 less.. This means that the any search engine will ignore 6/10 and your Chad inquiry concerning results. In fact they haven’t seen these web pages.

But in the end the XIX: report or triggered the fierce competition in the search engine. The scale of the search engine finally become important factors. The new search engines? address is eight lamp to meet the continent vomit (3), a look at ‘claws that the company’s objective and eight force broke out between Fletcher in the struggle for Lenovo L410 battery control of the. In January 2000, the state will (3) claw index number hit the 30 million mark. Six “up soon. In June 2000, search engine nova only, when the tuen become important competitors, the sudden broke 20 50 million mark. soon reached the Numbers, another new search engine double will knock. 0001 also Fielding to follow. In June 2001, 000 of the new record, the first breakthrough 1 billion documents mark.

Until now, 0008, has been far ahead. Trying to cover the whole of the Internet with oil out. 00111 second, an index of 60 million document, there are 55 million copies. Search engine performance becomes more and more good, this is positive news. No, there is also the problems: the world wide web growth also more and more quickly.

Most search engines that there was no attempt to index the entire network. @ simple reason: with most of the search engine index document, not necessarily the best. Shaw, but if you’re looking for information very partial, then the engine of the high rate of effect will be good cheer. But, if the search is a common topic, more index does not necessarily bring better results. @ Most of us, see the search engine to return to thousands of thousands of search results, I have lost. We don’t want to see more in yue a search will bring millions of result. Therefore, after more than a certain point, change into the algorithm from the search engines database to select the best pages, than mere search results more beneficial to the increase.

Involve the world wide web browsing, whether artificial browse or network robot browsing, economic incentives (or lack of such incentive are no longer is the only limiting factor. The world wide web of topological structure limits we couldn’t see the whole network of the world wide web is a scale-free network, and the center of the 10000-by node, node and links to form. But, next we will note that this a large scale, and construct topology and countless small scale structure, they are serious impact on the us through the click can find the link. ability

Although the world wide web has 1 billion more documents, but the 19 degrees to the world wide web space, easy to browse. It is very great, also is very small. But the world wide web back after the small world but some misled effect. If there is a connection between two documents road, this path should normally be diameter is short. But in fact, not all pages can mutual links. Any a page from the start, we can only links to jump to 24. 4 other document. The rest of the document to us is not visible, can’t clear at to.

The results of generation, is due to technical reasons, the world wide web PA3285U-2BRS battery links in the direction of stomach stomach. In other words, along a particular 11 address, we only only

To travel. In a network, if the two nodes between no link, you

Through the other nodes will they even up: for example, if want from six to you can start from node to node, people begin to 8, and the 8 and node connected, and point to the link But fell back nodes cannot. In the network, you have to just can go, also can pour to go, six-if it is the, the yao in turn. being ok. However, in the network, but we can’t guarantee reverse path must exist. Most likely, you want to come back, they had to go in the path of the different: starting from 0, you may need to visit a lot of people to return to between nodes. The world wide web is full of the path to. This essentially decides the world wide webseaworthiness, or call can browse the sex.