it said there were 132 000 results but only showed its 7 pages. i dont believe the conclusion that there were 20 000 results per page. do you believe that, baidu’s admins ?and the baidu’s fans?

Recommended Reading

• page
• Avery Internet Shipping Labels for Laser Printers with TrueBlock Technology, 5.5 x 8.5 Inches, White, Box of 200 (05126)
• The Jenson Sight Singing Course (Vol. I)

See how Presstek DI presses are designed to produce high-quality color printing in runs up to 20000 profitably—an area too low for conventional offset and too high for digital-toner devices. The average profit margin of a job printed on a Presstek DI press is over 40 percent.
Video Rating: 5 / 5

Recommended Reading

• page
• Kodak Glossy Photo Paper, 8.5 x 11 Inches, 100 Sheets per Pack (8209017)
• Save Printing Cost : Save Ink, Save Paper & Save Money – An Interview with ecoPrint’s Jack Momose
• Xerox Phaser 6500DN: High-Volume Features, but High-Priced Toner
• How to Calculate Printing Cost of Page for Ink Cartridges

Critical Analysis of Web Crawlers’ Algorithms

 Minou Parhizkar 0527553

Abstract- A web crawler is a program or automated script which browses the World Wide Web in a methodical, automated manner. The objective of the paper is to make a make a critical analysis of the algorithms used by Web Crawlers. It intends to review and evaluate the different and various approaches to the methods used by the different web search engines to catalog the information.

Index Terms-

Web Crawler, Search Engines, WWW, SEO

•I.     INTRODUCTION

The software that searches for information and returns sites which provide that information is referred to as a search engine or web crawler. Everyone uses web crawlers-indirectly, at least! Every time you search the Internet using a service such as Alta Vista, Excite, or Lycos, you’re making use of an index that’s based on the output of a web crawler. Web crawlers-also known as spiders, robots, or wanderers-are software programs that automatically traverse the Web. Search engines use crawlers to find what’s on the Web; then they construct an index of the pages that were found.

Search Engines use spiders to index websites. When you submit your website pages to a search engine by completing their required submission page, the search engine spider will index your entire site. A ‘spider’ is an automated program that is run by the search engine system. Spider visits a web site, read the content on the actual site, the site’s Meta tags and also follow the links that the site connects. The spider then returns all that information back to a central depository, where the data is indexed. It will visit each link you have on your website and index those sites as well. Some spiders will only index a certain number of pages on your site.

A spider is almost like a book where it contains the table of contents, the actual content and the links and references for all the websites it finds during its search, and it may index up to a million pages a day.

Example: Google spider

When you ask a search engine to locate information, it is actually searching through the index which it has created and not actually searching the Web. Different search engines produce different rankings because not every search engine uses the same algorithm to search through the indices.

One of the things that a search engine algorithm scans for is the frequency and location of keywords on a web page, but it can also detect artificial keyword stuffing or spamdexing. Then the algorithms analyze the way that pages link to other pages in the Web. By checking how pages link to each other, an engine can both determine what a page is about, if the keywords of the linked pages are similar to the keywords on the original page. Most of the top-ranked search engines are crawler based search engines while some may be based on human compiled directories. The people behind the search engines want the same thing every webmaster wants – traffic to their site. Since their content is mainly links to other sites, the thing for them to do is to make their search engine bring up the most relevant sites to the search query, and to display the best of these results first. In order to accomplish this, they use a complex set of rules called algorithms. When a search query is submitted at a search engine, sites are determined to be relevant or not relevant to the search query according to these algorithms, and then ranked in the order it calculates from these algorithms to be the best matches first.

Search engines keep their algorithms secret and change them often in order to prevent webmasters from manipulating their databases and dominating search results. They also want to provide new sites at the top of the search results on a regular basis rather than always having the same old sites show up month after month. An important difference to realize is that search engines and directories are not the same. Search engines use a spider to “crawl” the web and the web sites they find, as well as submitted sites. As they crawl the web, they gather the information that is used by their algorithms in order to rank your site.

This paper aims at critically analyzing various search engineers, how they work and comparing their algorithms.

•II.     Working of web crawlers – a detailed look up

Let us now look at a more detailed explanation on how Search Engines work. Crawler based search engines are primarily composed of three parts.

A search engine robot’s action is called spidering, as it resembles the multiple legged spiders. The spider’s job is to go to a web page, read the contents, connect to any other pages on that web site through links, and bring back the information. From one page it will travel to several pages and this proliferation follows several parallel and nested paths simultaneously. Spiders frequent the site at some interval, may be a month to a few months, and re-index the pages. This way any changes that may have occurred in your pages could also be reflected in the index. The spiders automatically visit your web pages and create their listings. An important aspect is to study what factors promote “deep crawl” – the depth to which the spider will go into your website from the page it first visited. Listing ‘submitting or registering’ with a search engine is a step that could accelerate and increase the chances of that engine “spidering” your pages.

The spider’s movement across web pages stores those pages in its memory, but the key action is in indexing. The index is a huge database containing all the information brought back by the spider. The index is constantly being updated as the spider collects more information. The entire page is not indexed and the searching and page-ranking algorithm is applied only to the index that has been created. Most search engines claim that they index the full visible body text of a page. In a subsequent section, we explain the key considerations to ensure that indexing of your web pages improves relevance during search. The combined understanding of the indexing and the page-ranking process will lead to developing the right strategies. The Meta tags ‘Description’ and ‘Keywords’ have a vital role as they are indexed in a specific way. Some of the top search engines do not index the keywords that they consider spam. They will also not index certain ‘stop words’ (commonly used words such as ‘a’ or ‘the’ or ‘of’” so as to save space or speed up the process. Images are obviously not indexed, but image descriptions or Alt text or “text within comments” is included in the index by some search engines.

The search engine software or program is the final part. When a person requests a search on a keyword or phrase, the search engine software searches the index for relevant information. The software then provides a report back to the searcher with the most relevant web pages listed first. The algorithm-based processes used to determine ranking of results are discussed in greater detail later.

These directories compile listings of websites into specific industry and subject categories and they usually carry a short description about the website. Inclusion in directories is a human task and requires submission to the directory producers. Visitors and researchers over the net quite often use these directories to locate relevant sites and information sources. Thus directories assist in structured search. Another important reason is that crawler engines quite often find websites to crawl through their listing and links in directories. Yahoo and The Open Directory are amongst the largest and most well known directories. LookSmart is a directory that provides results to partner sites such as MSN Search, Excite and others. Lycos is an example of a site that pioneered the search engine but shifted to the Directory model depending on AlltheWeb.com for its listings.

Hybrid Search Engines are both crawler based as well as human powered. In plain words, these search engines have two sets of listings based on both the mechanisms mentioned above. The best example of hybrid search engines is Yahoo, which has got a human powered directory as well as a Search toolbar administered by Google. Although, such engines provide both listings they are generally dominated by one of the two mechanisms. Yahoo is known more for its directory rather than crawler based search engine.

Search engines rank web pages according to the software’s understanding of the web page’s relevancy to the term being searched. To determine relevancy, each search engine follows its own group of rules. The most important rules are.

- The location of keywords on your web page; and – How often those keywords appear on the page ‘the frequency’

For example, if the keyword appears in the title of the page, then it would be considered to be far more relevant than the keyword appearing in the text at the bottom of the page. Search engines consider keywords to be more relevant if they appear sooner on the page (like in the headline) rather than later. The idea is that you’ll be putting the most important words – the ones that really have the relevant information – on the page first.

Search engines also consider the frequency with which keywords appear. The frequency is usually determined by how often the

Recommended Reading

• page
• The Road to Increased Web Traffic Starts Here

• Check paper refills compatible with all VersaCheck software products
• Secure protection with micro-print lines, security screens, and artificial watermarks, and more.
• Top Check: 3.5″ X 8 1/2″
• Middle Check: 3 1/2 X 8 1/2″
• Bottom Check: 3 1/2 X 8 1/2″

Blank Computer Check paper refills compatible with VersaCheck software. Also compatible with: Quicken, QuickBooks, MS Money, MAS90, MYOB, and all other financial softwares. Print your own custom checks using this blank computer check paper.

List Price: $ 19.99

Price: $ 19.99

Recommended Reading

• page
• how to get remainder with c#?
• Scavenger Hunt Party Game.
• Business Voucher Check Stock – Versacheck Refills – 3 Checks Per Page, 250 Sheets/750 Checks Blue Marble
• Rediform Extra Sheets for 4-Ring Ledger Binder, 5 x 8.5 Inches, 100 per Pack (14-055)
• What Went Wrong > Miami Herald, December 20, 1992 > Page 3
• just checking if this is appropriate?
• Ekonomik E20 Wirebound Form E20 Check Register W/20 Left Distribution Columns, 8-3/4X14-3/4
• Custom Photo Quickbooks 3-per-page Laser Checks

La Habra, CA (PRWEB) June 23, 2006

PictureSlide.com is taking a bold step and is now offering photo books for free.

According to Charles Bryant, PictureSlide.com marketing manager, “the reason for this unique and generous offering is that we want people to use our software and see a book first hand. It is our belief that once people see how easy the software is to use and the quality of the final book, they will come back again and again”.

PictureSlide.com is fast gaining the reputation as the “best of the best” in the photo book marketplace. The software is the easiest to use, yet has robust features that allows users to make truly unique and personalized photo books. Charles Bryant highlighted PictureSlide.com growth has truly been amazing. “We found that word of mouth was our best marketing tool. Essentially, seeing is believing. That is the reason we have decided to try this promotion. We think people will show others and word of mouth will continue to spread”.

The offer is limited to one 20 page, 6” x 4” book per customer, excluding shipping. “These books are great for carrying in your purse or wallet. We also think customers will be very impressed with the color reproduction and binding quality. They are library quality.” says Bryant.

These books are ideal for displaying your photographs. Many people are using them as special occassion presents. Customers are using the books to display weddings, sporting events, baby, and travel just to name a few.

The promotion is being test marketed and will be running until July 31, 2006. To get your free book, you simply log on to PictureSlide.com and click the free photo book link, fill out a form and PictureSlide.com will send you a code that allows to order a free book. The promotion is limited to one book per customer.

For additional information, or to get your free photo book log onto PictureSlide.com

###

©Copyright 1997-

, Vocus PRW Holdings, LLC.
Vocus, PRWeb, and Publicity Wire are trademarks or registered trademarks of Vocus, Inc. or Vocus PRW Holdings, LLC.

Recommended Reading

• page
• Rest stops for your soul
• Photography Posing Stools-With profession photos and lively words,you will find reading book is also interesting

Best answer:

Answer by Terra Nostra
In Sri Lanka, it is one small bowl of rice for a page. It might be a bit more in the States.

Add your own answer in the comments!

Recommended Reading

• page

Recommended Reading

• page
• Case da incubo – Uova marce scadute da un anno: puntata 01
• E scoprire che non c’è nessun motivo per vedersi da lontano
• DEWALT D26451K 3 Amp 5-Inch Random Orbit Sander with Cloth Dust Bag
• Da Pontormo & Per Pontormo (Centro Di cat) (Italian Edition)
• Maple At Midnight
• Colin Haley, alpinismo dall’Alaska alla Patagonia
• The Real Da Vinci Code: Leonardo’s Vitruvian Man is a Code for Greater Success
• Preghiera Per Un Figlio
• Atlantia: sottoscritto finanziamento BEI per 300 milioni di euro
• Da ‘La fabbrica illuminata’ : Finale (Per voce sola)

You?

Best answer:

Answer by fritteritter
About 2/3 the number of visits and pageviews, other stats are very close to mine.

Add your own answer in the comments!

Recommended Reading

• page
• Homes.com Ranks #2 in User Page Views and Time Spent on Website, Following Only Realtor.com.
• How much can a website earn if it gets 30,00,000(30 million) visits per month & 10 page views/user (avg)?
• Business Buzz: Nov. 21, 2010

In a smaller town with one main book, the Yellow Page ad usually proves to be a valuable investment for most business owners, but only if the ads are good! Let’s start off by looking at some of the common mistakes that are made in Yellow Page ads and how to avoid them.

1) Unless your business is almost totally dependent on the yellow pages, say like a rental car company, a self-storage facility, or a locksmith, do not spend all of your advertising money on yellow pages. Do not go in several different books either; it costs too much money. Pick the best book and spend the rest of your money on local print and direct mail advertising. Try to keep your yellow-page cost to a maximum of 30% of your monthly advertising budget, preferably less.

2) Do not waste space with useless information. The space costs too much money to waste. Every time you design a Yellow-Page ad, picture a square filled with hundred-dollar bills, because that’s what that ad really is — your money. Come up with the very best way to use this space to your advantage.

3) Do not, as many businesses do, put a big headline like AUTO SALES, when the yellow pages have already done that for you at the top of the page. If you are in the auto section, you don’t have to waste space telling people that.

4) Do not use reverse type for any more than a single line. While ad reps
will tell you that it makes your ad stand out, what it actually does is makes your ad 25% harder for the human eye to read. Now why would you want to do a thing like that?

5) Do not pay extra for several different colors — it’s not worth the extra money! Unless you get it thrown in as part of the deal, which you often can just by asking!

6) Do not let the Yellow Pages typeset your ad, they will screw up it up if they can. Take it to a graphics shop or print shop and have them do it for you. It will only cost a few bucks, and you will know that the phone number and ad are correct. Trust me on this one, it’s painful to wait 12 months for the phone to ring because they listed the wrong phone number. It’s happened to me, it won’t ever happen to me again!

7) If you were in ad sales you would take the trouble to learn something about ads, wouldn’t you? Most don’t! Do not let the advertising representative design your ad. They know nothing! They are there to sell you space, let them do that and nothing else.

Do not use a photograph unless it is perfect. That means a picture with excellent clarity and a contrasting background. When you print with high volume presses on low quality paper, the photograph will get 20%-30% darker. In many cases your photo ends up looking like a black cat in a coal cellar at midnight. Only use good, clean photos and drop out the background to make them even better.

9) Do not point the photograph off the page or at somebody else’s ad. This takes the reader’s eye with it. The picture or graphic should always be facing the information you want the reader to READ!

10) Do not make the ad so cluttered or the type so small that it is hard to read or people will just pass your ad over
and go to the next. Use 12-point or larger type, 55% of Americans can’t read anything smaller.

Yellow Pages Do’s

People who read the Yellow Pages are in a buying mood! Help them make the decision to choose your business by providing clear, simple and useful information about you and what you offer!

1) Use a benefit in your headline for your Yellow Page ads. Try to use the words YOU, YOUR, YOURSELF or

FREE in the headline.

Give your child a head start in life at XYX preschool!
You don’t pay unless we collect!
Family Pizza Centers are Fun!
Free estimates in writing!

2) Put a distinctive border around your ad to isolate it from the others and to make it Stand out. A bold black border is fine, although you can do a custom frame that ties in with your business. For example an art gallery might use a picture frame. Shadow the bottom line of your ad and the right side to give your ad a 3D look and make it stand out more.

3) Use a few and well chosen short buzz sentences that offer benefits:
* Family Pizza close, affordable & fun!
* Lose weight and Increase your fitness for a longer, healthier life!
* The Computer Doctor offers same-day repair or replacement on all hardware!

Notice that each of these sentences provides a clear and direct benefit to the reader as opposed to putting a bullet that tells them nothing.

4) Use a picture that appeals to all the groups you are trying to reach. By showing a man, women and children in an ad, you say that you offer something for each of these groups without having to use up valuable copy space to do so.

5) Make the phone number easy to find. That means putting it at the bottom of your ad in large type! Try to get a phone number that is easy to remember like 589-5000, 589-1234 or 555-GOLF. Then tell the readers what you want them to do, CALL NOW !!!!

6) When negotiating for space, remember that ad space is blue sky. Once you get the best price that you can for a plain display ad, start asking for more. Ask for free spot color, additional free boldface listings, or even a second ad. You don’t get anything by not asking, and you will often be surprised at what you do get!

7) If there are other similar businesses close to yours, put a small map in your ad and give a major landmark that the caller will recognize. Across from Wal Mart. Once you have gone to all the trouble of doing a good ad, the last thing you need is a prospect going to the wrong business.

Plan in advance, don’t wait until the last minute when you will be forced to settle for a less than perfect ad. Call your Yellow Pages today and find out what the deadline is for their next book. Then make your own deadline six weeks ahead of the final deadline. Always insist on seeing a final proof of your ad before it is printed. Once a phone number is printed wrong, it stays wrong all year!

9) Once you have gone to the trouble of designing a good Yellow Page ad, don’t blow it by having an answer machine on the other end of the phone. People who are using the yellow pages want answers now. If they get your answer machine, the chances are that they are simply going to call the next listing in the book, even if it is an inferior ad. To avoid this terrible fate, consider: Getting an answer service. Forwarding the number to your home. Or carrying a mobile phone around with you.

10) Last, but not least, make sure you train yourself and your staff on good telephone procedures. Over 50% of your potential clients can be lost on the first phone call.

Recommended Reading

• page
• Tattle Tales Magazine — Fall Edition 1937 — Mistaken Identity …..item 1..But $16 muffins, $5 sodas, and $8 cups of coffee are still pretty pricey for a government agency (September 20, 2011) …
• Cost per Acquisition Pricing
• One Buck Wiki Sells Over 700 Pages in Just 5 Days Since its Launch
• Inkjet vs Laser Printers
• The Cost of SEO – Planning an SEO Campaign
• HP CC533A Magenta Toner – This Is Our New Compatible Brand Magenta Toner Cartridge – 2,800 Pages Per Cartridge – For Use With HP Color LaserJet CM2320fxi, CM2320n, CM2320nf, CP2025dn, CP2025n and CP2025x Color Printers From HP
• Pay Per Fan: What Big Brands Are Paying For Facebook Fans

• Color cartridge for Hewlett-Packard printers
• Compatible with DeskJet 300/400/500 series, DeskWriter 300/500 series, DeskWriter C
• Superior 300 dpi color printing
• Advanced dye-based ink technology
• Faster color printing with lower cost per page

HP’s advanced inkjet technology is well suited to a wide range of applications, from printing simple text documents to producing vivid, complex graphics on all types and sizes of paper, film, fabric, and other media. The versatility and affordability of inkjet technology make it the ideal choice for today’s value-conscious consumers. With proprietary ink formulas, patented printheads, and a wide variety of compatible media, HP offers integrated inkjet printing solutions that produce low-cost, hi

List Price: $ 36.99

Price: $ 36.99

Recommended Reading

• page
• Epson WorkForce 545 Color Inkjet Wireless All-In-One Printer and Copier with Fax (C11CB88201)
• Preschool Activity Coloring Books to Download, Print and Bind
• How much does it cost per color page when you print something out?
• Epson B-310N Business Color Ink Jet Printer (C11CA67601)