Thursday, September 15, 2011
Thursday, August 4, 2011
Google Pagerank Algorithm
Google Pagerank Algorithm
The most popular way for PageRank algorithm to rank websites. Algorithm developed and Sergey Brin and Larry Page of the 90s were published by Stanford University at the end. PageRank can be understood as a website's importance. Ranking algorithm is a function of factors on and off the page. - On page factors title, description, headings and plain text are, for example. PageRank and anchor text from off-page factors (incoming links) is. Neither the content nor the URL (such as off-page criteria, called factors) plays a role. In addition, there is no difference between internal and external links.
The citation (link) graph of the web is an important resource that has largely gone unused in existing web search engines. Google created maps containing as many as 518 million of these hyperlinks, a significant sample of the total. These maps allow rapid calculation of a web page's "PageRank", an objective measure of its citation importance that corresponds well with people's subjective idea of importance. Because of this correspondence, PageRank is an excellent way to prioritize the results of web keyword searches. For most popular subjects, a simple text matching search that is restricted to web page titles performs admirably when PageRank prioritizes the results (demo available at google.stanford.edu).
Assume page A has pages T1...Tn which point to it (i.e., are citations). The parameter d is a damping factor which can be set between 0 and 1. We usually set d to 0.85. There are more details about d in the next section. Also C(A) is defined as the number of links going out of page A. The PageRank of a page A is given as follows:
PR(A) = (1-d) + d (PR(T1)/C(T1) + ... + PR(Tn)/C(Tn))
Note that the PageRanks form a probability distribution over web pages, so the sum of all web pages' PageRanks will be one.
PageRank or PR(A) can be calculated using a simple iterative algorithm, and corresponds to the principal eigenvector of the normalized link matrix of the web.
Friday, July 15, 2011
Multiple Gmail Accounts
Multiple Gmail Accounts
At the risk of sounding greedy, I have five Gmail accounts. Hey, Google makes the rules, not me. Gmail accounts are free, and there's no limit on how many a single person can have. However, checking all those accounts gets to be pain, what with all the signing in and signing out. That's why I rely on one of my all-time favorite Firefox extensions: Multiple Gmail Manager.
True to its name, the add-on lets you manage multiple Gmail accounts from within the comfy confines of your browser. After installing it and configuring your accounts in the Preferences, you'll see a Gmail Manager status bar in the bottom-right corner of the browser window. Mouse over it for a pop-up listing your newest messages. Click it to open Gmail in a new tab. Or right-click it to select a different account.
Gmail Manager has loads of options you can tweak, like new-mail notifications, a numeric unread-mail count, and a pop-up "snippet" box. In short, it does everything you could want short of actually reading your mail for you. This is a killer extension and a must-have for anyone who uses multiple Gmail accounts.
Gmail Manager 0.6.4.1
Thursday, July 14, 2011
Ads in Gmail and your personal data
How Gmail Ads work
Ads that appear in Gmail are similar to the ads that appear next to Google search results and on content pages throughout the web. In Gmail, ads are related to the content of your messages. Our goal is to provide Gmail users with ads that are useful and relevant to their interests.
With features like Priority Inbox, we’ve been working hard to help sort through the ‘bacn’ in your messages -- the unimportant messages that get in your way. We use a similar approach with ads by using some of the same signals that help predict which messages are likely to be important to you, Gmail will better predict which ads may be useful to you. For example, if you’ve recently received a lot of messages about photography or cameras, a deal from a local camera store might be interesting. On the other hand if you’ve reported these messages as spam, you probably don’t want to see that deal.
Ad targeting in Gmail is fully automated, and no humans read your email in order to target advertisements or related information. This type of automated scanning is how many email services, not just Gmail, provide features like spam filtering and spell checking. Ads are selected for relevance and served by Google computers using the same contextual advertising technology that powers Google's AdSense program.
Privacy, Transparency and User Choice
Google does not and will never rent, sell or share information that personally identifies you for marketing purposes without your express permission. No email content or other personally identifiable information will be provided to advertisers. We provide advertisers only aggregated non-personal information such as the number of times one of their ads was clicked.
Only ads classified as Family-Safe are distributed through our content network and to your Gmail inbox. Also, we are careful about the types of content we serve ads against. For example, Google may block certain ads from running next to an email about catastrophic news. In addition, we will not target ads based on sensitive information, such as race, religion, sexual orientation, health, or sensitive financial categories.
You can control the use of these signals from the Gmail Settings page. If you don't want to see ads in Gmail you have the option of using the HTML interface, or POP1 or IMAP. We're also committed to data liberation: if you decide to switch to a new email provider, it's easy to set up automatic forwarding for all new messages that arrive in your Gmail account.
If you'd like to know more about how Google handles your information, please check out the Google Privacy Center.
Friday, July 8, 2011
Check Google PageRank Update History
Check Google PageRank* (PR) Update History |
| Google Toolbar PageRank (PR) Update in the year 2011 |
| Updated on Jan 20th 2011 |
| Google Toolbar PageRank (PR) Update in the year 2010 |
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| Updated on April 03rd 2010 |
| Google Toolbar PageRank (PR) Update in the year 2009 |
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| Updated on December 30th 2009 |
| Updated on October 30th 2009 |
| Updated on June 25th 2009 |
| Updated on May 27th 2009 |
| Updated on April 1st 2009 |
| Google Toolbar PageRank (PR) Update in the year 2008 |
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| Updated on December 31st 2008 |
| Updated on September 26th 2008 |
| Updated on July 25th 2008 |
| Updated on April 30th 2008 |
| Updated on February 29th 2008 |
| Google Toolbar PageRank (PR) Update in the year 2007 |
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| Updated on December 12th 2007 |
| Updated on October 28th 2007 |
| Updated on April 30th 2007 |
| Updated on January 25th 2007 |
| Updated on January10th 2007 |
| Google Toolbar PageRank (PR) Update in the year 2006 |
|
| Updated on September 28th 2006 |
| Updated on July 30th 2006 |
| Updated on April 4th 2006 |
| Updated on April 7th 2006 |
| Updated on February 18th 2006 |
| Updated on May 27th 2006 |
| Updated on January 30th 2006 |
| Updated on January 4th 2006 |
Facebook video chat
Last week, Facebook CEO Mark Zuckerberg promised “awesome” new updates to the ubiquitous social network. Now that the company has unveiled a new video chat feature, the blogosphere has a chance to ask, “Well, how 'awesome' is it, really?”
A quick recap: Facebook will launch the new feature in tandem with Skype, and they’ve integrated the two services closely. Skype already had some Facebook features – the latest Windows version showed your friends list, gave access to Facebook chat, and allowed you to “Like” a friend’s status – but it still inhabited its own program and required users to register for a separate Skype account.
Starting today, though, the services have effectively fused. You’ll see a little “call” button on each of your friends’ profile pages, as well as a video icon in your right-hand chat window. In the announcement this morning, Zuckerberg emphasized that the service requires only minimal setup to use, and it’s true: the applet takes just a few seconds to download and install.
RELATED: Beginner's guide to Skype
How does the new service stack up to Google’s offerings? The search engine giant has offered video, text chat, and free phone calls as part of Gmail. In addition, the Google+ social network that launched out of Mountain View last week includes a feature dubbed “Hangouts,” which allows group video chats with up to 10 members. For now, Facebook only allows one-on-one video chat (although Facebook did enable group text chat – for mobile devices as well as computers – as part of its announcement).
Generally speaking, pundits applauded the new Facebook features. MySpace founder Tom Anderson wrote on TechCrunch, “The challenge is to get the user base, and make it easy for them to use your product. Done and done for Facebook. The integration looks great.”
Over at TechCrunch, Michael Arrington pointed out that “If you want to have a one on one video chat, and your friend list is hosted at Facebook, the new Facebook video chat is a near perfect product.” However, Arrington also pointed to the lack of feature parity between Facebook’s and Google’s offerings – a complaint shared by many other pundits.
Ars Technica editor Paul Ryan pointed to the web-only interface as a stumbling block, saying, “[I] can't imagine ever using the new video chat service. A chat system that is tied entirely to a single website in a browser isn't particularly useful to me.” And AllThingsD reporter Liz Gannes pointed out that although Zuckerberg’s presentation repeatedly emphasized third-party apps and mobile traffic as key drivers of Facebook’s growth, the products announced Wednesday launched “without any support for apps and mobile.”
What’s your take? Will you be making frequent of Facebook video chat? If you’re one of the lucky ones currently using Google+, how do the services stack up? Drop us a line in the comments – we’re listening.
Tuesday, April 19, 2011
Google Panda Algorithm Update
Last week, Google launched its Panda update around the world in the English language, while also making some new adjustments to the U.S. algorithm, which the company said would impact 2% of queries (compared to the 12% impacted by the initial Panda update in the U.S.).
Demand Media’s eHow was reported to have been among the top sites negatively impacted by this new round of Panda, in the UK (which is likely indicative of impacts in other countries), and also in the U.S. We looked at data from SearchMetrics to this effect, and then Sistrix put out some data that seemed to back it up for all intents and purposes.
Over the weekend, Sistrix put out a new set of data. “As with our other analysis, the following data is based on observing ranking information before and after the update,” said Sistrix’s Johannes Beus. “The keywords are chosen to reflect an intersection of the local search behavior and we’re quite confident to have a highly reliable data set.”
“Ehow.com got hit this time,” he added. “They were among the sites at which the farmer [Panda] update was aiming but somehow survived the first round. Like in the UK, they lost massive visibility in the US since this week.”
Apparently in response to this report, Demand Media decided to put out a press release addressing the situation after staying quiet about it throughout the week. The company said it’s reaffirming its financial outlook for fiscal year 2011. Here’s a snippet of the release:
“Certain third parties that have published reports attempting to estimate the effect of recent search engine algorithm changes made by Google on traffic to the Company’s owned and operated websites have significantly overstated the negative impact of those changes on traffic to eHow.com, as compared to the Company’s directly measured internal data. Recent search engine algorithm changes have negatively impacted search driven traffic to some of our websites, including eHow.com, resulting in moderately lower year-to-date page view growth for the Company’s owned and operated Content & Media properties compared to page view growth rates before the algorithm changes. Nevertheless, the Company currently expects that its year-over-year page view growth across its owned and operated Content & Media properties in the second quarter of 2011 will be comparable to, or greater than, the year-over-year page view growth achieved in the second quarter of 2010.”
Larry Fitzgibbon, Demand Media’s EVP of Media and Operations, followed up the release with another Statement about the algorithm changes. “With respect to Panda’s mid-April update, some of our properties saw Google search referrals move up while other properties, including our largest property eHow.com, saw these referrals go down,” he wrote.
“Organic growth in visits from non-search sources to eHow continue to grow rapidly and Cracked.com is now the most visited humor site on the Internet with the majority of its page views coming from direct visits,” he said, adding that improvements have been registered from the recent eHow redesign and new video series. These have led to “significant growth in Facebook likes,” he said.
According to Fitzgibbons, Demand Media’s brand advertisers have been reporting “encouraging results” as well.
Beus did follow up Demand Media’s response with an update to the Sistrix report, saying, “Demand Media has published a statement where they point out that traffic to ehow.com hasn’t declined 66%. I’d like to emphasize that although our data usually correlates quite well with actual traffic numbers it is a view from the outside and Demand Media’s own data is of course correct.”
Still, the new algorithm changes must have caught the company off guard, particularly, since eHow had escaped and even benfited from the original Panda update. When Google announced the new changes, it also noted that it was using the domain-blocking feature as a ranking signal in “high confidence” situations. Given that eHow is arguably the most-referenced site in content farm discussions, it’s not hard to imagine it also being one of the most-blocked. It’s entirely possible that this played a major role in eHow’s search visibility decline.
Back in January, when Google started talking about tackling the content farm issue, Demand Media CEO Richard Rosenblatt talked about his company’s relationship with Google in an All Things Digital interview. “1) We help them fill the gaps in their index, where they don’t have quality content. 2) We’re the largest supplier of all video to YouTube, over two billion views and 3) we’re a large AdSense partner. So our relationship is synergistic, and it’s a great partnership. And it’s a partnership that we’re excited to continue to expand.”
Of course Google has made it clear that being an AdSense partner has absolutely no influence on search rankings. In fact, many of those negatively impacted by the updates used AdSense heavily.
Demand Media’s stock has been on the decline since the update. At the time of this writing, it’s down to $17.66 a share. The company will report its first quarter earnings on May 5.
Thursday, April 14, 2011
Firefox 5 is set for a June release
OPEN SOURCE SOFTWARE OUTFIT Mozilla will release version five of its Firefox browser on June 21, according to a developer road map.
The organisation will have a steady rollout schedule for the updated Firefox browser, which will see it released as a beta on May 17 and enter the final release stage approximately five weeks later. The rapid releases signal something of a change at Mozilla and sees it launch the next version just a couple of weeks after it released the well received Firefox 4. Downloads of Firefox 4 have already topped 75 million, as displayed on Mozilla's download counter website.
This shift also sees the organisation come up with some new names for its releases. Aurora, then, is an internal name for the web browser that precedes the beta release, but it follows a candidate described as Central, or Nightly, which is designed for hard core and in house users.
Nightly releases are early, as you might assume, and are what Mozilla has described as 'General development'. Aurora, the next stage and the new name for the early version of the browser, is more advanced and it fixes any remaining localisation issues as well as any recent bug problems, and it sees the developers carry out 'landing fixes' as it moves closer to the beta release.
Currently the Mozzarella crew has no Aurora users but it expects subscribers to top one million, and it will enroll them as necessary, apparently expecting a lot of interest.
"This is a new channel. We will discuss populating this channel artificially if need be. The hope is people will self-select into this channel (either by downloading a build or using the in-product channel switcher) due to the balance of new features and stability," Mozilla said.
Users are expected to be "Power users willing risk instability to see and test the latest fixes."
Thursday, February 3, 2011
Web Application Development
Some people often wonder why should I opt for a web application development company to develop online interfaces for my website. Well, this would be for the simple reason to ensure your site is more interactive and user friendly. Many web application companies offer superb online services at very competitive rates. This is why outsourcing your web development plans is not a bad idea at all. You or your team could be tied up in various other activities or may not have the technical expertise and that is why outsourcing web application development makes your job much quicker, easier and reliable.
Many online businesses are choosing to make their site more interactive by embedding certain applications. These applications not only help the visitor to be more engaged with the website but can also help in increasing more traffic. A typical web application development company would always engage with you to understand your basic requirements and then would develop a prototype of the kind of online application you would require for your site. Once approved, the company would upload the particular interface on your website so that it can be made accessible to the public or visitors who come to visit your website.
Online applications could be of various types. The most common are online forms that capture vital data of visitors like name, address or phone numbers etc. This form would be attached with a database which would save all vital data. The most complex online applications are like payment gateways, online shopping carts, mobile applications and keeping track of online inventories. Chat software and intranet applications are also commonly used interfaces that most companies require for their day to day business.
Online web applications are proven techniques of engaging online visitors and helping in increasing overall ROI. While choosing a web application development company you would need to keep various points in mind. Not all companies can offer the sort of online applications that you require hence making a comparative analysis is all the same imperative. In order to evaluate the company you can always ask for portfolios of the company and/or any recommendations or testimonials. You may want to go through the work done by the company by yourself and evaluate the quality. If satisfied then the next question you may want to ask is the Turn Around Time. How quickly can they develop and deliver the application to you. The application has to be free of bugs and should have the option to further expand in case you need to add more functionalities in the near future.
Although there are many companies that claim to offer the best of online and web application development services but only a handful can offer 100% reliability. If you are looking to outsource your web application needs and also to make huge savings then outsourcing your requirements to a country like India is not a bad idea. Companies like IT Chimes can deliver what you want and when you want it at prices that can easily fit into your budget. Such companies have hired professionals who come from various backgrounds and can deliver world class quality products that you and your customers would enjoy browsing through online.
Wednesday, January 12, 2011
Application Development Company
A typical web application facilitates business owners to engage with stakeholders in sharing important data and information. In other words be it employees, business partners, suppliers, investors or end customers, all can access the same information online at the same time.
In the competitive world we live in today web applications are becoming vital means of providing information at the right time. For the success of your business you would require certain applications that can offer connectivity across the globe and help various stakeholders and users to download information at their finger tips through the web platform.
Some of the common online applications used are online surveys, ticket reservation, event registration, payment gateways and online shop management. Open source web applications that are mostly platform independent can take care of such processes at minimal costs. All that you need to do is to engage a professional web application development company that can develop robust and scalable systems for you.
Certain online web applications like secure payment gateways have led to a significant rise in transactions over the web. This has facilitated various corporations to reduce overall costs and offering better discounts to customers. As a result, both the company and the end user benefit with the customer enjoying massive savings in money, time and efforts in going physically to the shop or market.
Most companies have benefitted from online applications in terms of streamlining their internal processes. Web applications have helped many organizations in automating payroll systems, employee attendance, HR practises and to assist employees in downloading any manual or form as they may require.
Certain online systems like Lead Management have taken a step further in ensuring better prospects for the company. Such systems offer inexpensive tools to help generate sales opportunities, process orders, and maintain a record of quotes. Such sub systems have helped companies in keeping track of sales, maintain records of customers, close tenders and deals and effectively manage overall sales processes.
Secure and scalable web applications are what many companies require if they want to make an impact in the market. In order to achieve this you must hire a dependable application development company that has experience in developing a variety of web applications for global companies. IT Chimes is one such company that has a proven track record of developing a variety of applications for companies of all sizes and multiple requirements. Not only do you land up in making huge savings but also increase the traffic towards your website.
