Saturday, 1 October 2011

Data Mining - A Short Introduction


Data mining is an integral part of data analysis which contains a series of activities that goes from the 'meaning' of the ideas, to the 'analysis' of the data and up to the 'interpretation' and 'evaluation' of the outcome. The different stages of the technique are as follows:
Objectives for Analysis: It is sometimes very difficult to statistically define the phenomenon we wish to analyze. In fact, the business objectives are often clear, but the same can be difficult to formalize. A clear understanding of the crisis and the goals is very important setup the analysis correctly. This is undoubtedly, one of the most complex parts of the process, since it establishes the techniques to be engaged and as such, the objectives must be crystal clear and there should not be any doubt or ambiguity.
Collection, grouping and pre-processing of the data: Once the objectives of the analysis are set and defined, we need to gather or choose the data needed for the study. At first, it is essential to recognize the data sources. Usually data are collected from the internal sources as the same are economical and more dependable and moreover these data also has the benefit of being the outcome of the experiences and procedures of the business itself.

Investigative analysis of the data and their conversion: This stage includes a preliminary examination of the information available. It involves a preliminary assessment of the significance of the gathered data. An exploratory and / or investigative analysis can highlight the irregular data. An exploratory analysis is important because it lets the analyst choose the most suitable statistical method for the subsequent stage of the analysis.
Choosing statistical methods: There are multiple statistical methods that can be put into use for the purpose of analysis, so it is very essential to categorize the existing methods. The choice statistical method is case specific and depends on the problem and also upon the type of information available.

Data analysis on the basis of chosen methods: Once the statistical method is chosen, the same must be translated into proper algorithms for working out the results. Ranges of specialized and non-specialized software are widely available for data mining and as such it is not always required to develop ad hoc computation algorithms for the most 'standard' purpose. However, it is essential that the people managing the data mining method well aware and have a good knowledge and understanding of the various methods of data analysis and also the different software solutions available for the same, so that they may adapt the same in times of need of the company and can flawlessly interpret the results.
Assessment and contrast of the techniques used and selection of the final model for analysis: It is of utmost necessity to choose the best 'model' from the variety of statistical methods accessible. The selection of the model should be based in contrast with the results obtained. When assessing the performance of a specific statistical method and / or type, all other dependent and / or relevant criterions should also be considered. The other criterions may be the constraints on the company both in terms of time and resources or it may be in terms of quality and the accessibility of data.
Elucidation of the selected statistical model and its employment in the decision making process: The scope of data mining is not limited to data analysis rather it is also includes the integration of the results so as to facilitate the decision making process of the company. Business awareness, the pulling out of rules and their use in the decision process allows us to proceed from the diagnostic phase to the phase of decision making. Once the model is finalized and tested with an information set, the categorization rule can be generalized. But the inclusion of the data mining process in the business should not be done in haste; rather the same should always be done slowly, setting out sensible and logical aims. The final aim of data mining is to be an integral supporting part of the company's decision making process.


 

Web Mining


With the bang of the era of information technology, we have entered into an ocean of information. This information blast is strongly based on the internet; which has become one of the universal infrastructures of information. We can not deny the fact that, with every passing day, the web based information contents are increasing by leaps and bounds and as such, it is becoming more and more difficult to get the desired information which we are actually looking for. Web mining is a tool, which can be used in customizing the websites on the basis of its contents and also on the basis of the user interface. Web mining normally comprises of usage mining, content mining and structure mining.
Data mining, text mining and web mining, engages various techniques and procedures to take out appropriate information from the huge database; so that companies can take better business decisions with precision, hence, data mining, text mining and web mining helps a lot in the promotion of the 'customer relationship management' goals; whose primary objective is to kick off, expand, and personalize a customer relationship by profiling and categorizing customers.

However, there are numbers of matters that must be addressed while dealing with the process of web mining. Data privacy can be said to be the trigger-button issue. Recently, privacy violation complaints and concerns have escalated significantly, as traders, companies, and governments continue to gather and warehouse huge amount of private information. There are concerns, not only about the collection and compilation of private information, but also the analysis and use of such data. Fueled by the public's concern about the increasing volume of composed statistics and effective technologies; conflict between data privacy and mining is likely to root higher levels of inspection in the coming years. Legal conflicts are also pretty likely in this regard.
There are also other issues facing data mining. 'Erroneousness of Information' can lead us to vague analysis and incorrect results and recommendations. Customers' submission of incorrect data or false information during the data importation procedure creates a real hazard for the web mining's efficiency and effectiveness. Another risk in data mining is that the mining might get confused with data warehousing. Companies developing information warehouses without employing the proper mining software are less likely to reach to the level of accuracy and efficiency and also they are less likely to receive the full benefit from there. Likewise, cross-selling may pose a difficulty if it breaks the customers' privacy, breach their faith or annoys them with unnecessary solicitations. Web mining can be of great help to improve and line-up the marketing programs, which targets customers' interests and needs.
In spite of potential hurdles and impediments, the market for web mining is predicted to grow by several billion dollars in the coming years. Mining helps to identify and target the potential customers, whose information are "buried" in massive databases and to strengthen the customer relationships. Data mining tools can predict the future market trends and consumer behaviors, which can potentially help businesses to take proactive and knowledge-based resolutions. This is one of the causes why data mining is also termed as 'Knowledge Discovery'. It can be said to be the process of analyzing data from different points of view and sorting and grouping the identified data and finally to set up a useful information database, which can further be analyzed and exploited by companies to increase and generate revenue and cut costs. With the use of data mining, business organizations are finding it easier to answer queries relating to business aptitude and intelligence, which were very much complicated and intricate to analyze and determine earlier

 

Thursday, 29 September 2011

Windows 8



How Windows 8 Could Be “Windows Great”
 Before Microsoft's Windows Server 8 Reviewers Workshop, Mark Minasi had some definite ideas about what he wanted to see in the newest Windows OSs. more
Windows 8 and Windows Server 8 "Reimagining" and Whither Windows Phone?
 Windows Server 8 is a huge upgrade for businesses, one that will have ramifications a decade down the road. more
Tip: Improve Windows 8 with Third Party Utilities
 With developers now tearing up the Windows 8 developer preview and looking for hidden gems, we're going to soon see an amazing number of utilities aimed at improving the Windows 8 experience and, in some cases, making it work more like its predecessors. While I can't endorse or support that kind of thing, let alone recommend individual utilities quite yet, I figured it would be useful to collect what's out there in a single location. more
Mailbag: Windows 8 Developer Preview



 As you might imagine, my inbox is overflowing with questions about Windows 8, thanks to Microsoft's recent release of the first public Developer Preview. I don't have all the answers, but here are some of the more representative questions I've received in the past 10 days. more
Windows 8 Tip: Using a Mouse
 The new Windows 8 shell, as exemplified by the Start screen, works equally well with the keyboard and mouse, or with a Tablet PC-style stylus, as it does with touch. But because a mouse (or a similar device, like a laptop's trackpad) will be the most commonly used pointing device in Windows 8, it makes sense to investigate how you use one in this supposedly touch-centric UI. Shocker: It works just fine. more
Paul's Picks: Windows 8 Developer Preview and Small Business Server 2011 Essentials
 See why Windows 8’s UI is so successful that Microsoft is using it in other products; plus, learn why Small Business Server 2011 Essentials still needs Office 365 to ensure total SMB domination. more
Windows 8 Tip: Windows Key Shortcuts In the first in a series of articles about new keyboard shortcuts in Windows 8, I'll examine a new class of keyboard shortcuts that involve the Windows key, since this key is gaining new importance in this release. more
Reimagining Microsoft: How Windows 8 and Windows Server 8 Change the Rules
 Microsoft has put a lot of effort into Windows 8 and Windows Server 8, and that effort shows: The new and improved feature list for Windows Server 8 runs into the hundreds, with massive enhancements to existing features (like Hyper-V) and long-overdue upgrades to less flashy features -- like improvements to CHKDSK and IP address management -- that will make Windows System Administrators more efficient and give them back some precious time. more
Windows Weekly 226: Live From Anaheim and the BUILD Conference: Windows 8 Revealed In the latest episode of the Windows Weekly podcast, Mary Jo and I are joined by special guests Stephen Chapman, Travis Lowdermilk, Rafael Rivera, Sandro Villinger, Tom Warren, and Long Zheng live from the Expo show floor at BUILD in Anaheim, California. We discuss the Windows 8 Developer Preview, and shenanigans ensue. more
Windows 8 Developer Preview: Windows Explorer Screenshot Gallery



 Despite focusing quite heavily on the future with the new Windows shell and its Start screen and tailored, Metro-style apps in Windows 8, Microsoft is also investing in the classic and depreciated Windows desktop. This includes a new version of Windows Explorer.
Windows 8 Developer Preview: Client Hyper-V Screenshot Gallery
 Where Windows 7 includes the software-based virtualization solution called Windows Virtual PC, Windows 8 will usher in a new era with a true hypervisor-based virtualization platform called Client Hyper-V. Client Hyper-V utilizes the same Hyper-V Manager user experience as Hyper-V on Windows Server and offers dramatic performance, scalability, and compatibility improvements over Windows Virtual PC. more
Windows 8 Developer Preview: Explorer Auto-Personalization Screenshots
 As Rafael Rivera and I previously revealed, Windows 8 includes a new Aero auto-colorization feature that automatically configures the color of Aero glass elements--like Windows Explorer windows and the taskbar--based on the desktop wallpaper. Here's what it looks like. more
Windows 8 Developer Preview: Control Panel Screenshot Gallery
 Here's a screenshot gallery showing off each of the screens in the Windows 8 Developer Preview Control Panel. more
WinInfo Short Takes, September 16, 2011
 An often irreverent look at some of this week's other BUILD news, including Windows 8's fast start, the Windows 8 schedule, my top two Windows 8 questions (that I can answer) and the single most confusing thing about Windows 8, Microsoft's stand on Flash in Windows 8, Microsoft's new billion dollar business and a potentially huge ad partnership between AOL, Microsoft, and Yahoo! more
BUILD: Reimagining Windows Is Key to Microsoft Reimagining Itself
 In town for his company's annual meeting with financial analysts, Microsoft CEO Steve Ballmer surprised the crowd at the BUILD Conference this week in Anaheim, California, by closing out the day-two keynote on Wednesday. more
Windows 8 Refresh Your PC Screenshot Gallery
 Here are some screenshots of the new Refresh Your PC capability in Windows 8. more
Windows 8 PC Repair Screenshot Gallery
 Here are some screenshots of the new PC repair tools available in Windows 8. more
Windows 8 Developer Preview Setup Screenshot Gallery
 Here's a quick screenshot gallery showing off the process of installing the Windows 8 Developer Preview. more
BUILD Day Two Keynote Live Blog
 Today, Microsoft holds day two of its BUILD Conference with a keynote address that will unveil Windows Server 8 and its cloud strategy. I'm live blogging the event with fellow bloggers Ed Bott, Mary Jo Foley, Kip Kniskern, Rafael Rivera, Paul Thurrott, Tom Warren, Long Zheng. Join in! The event begins at 9:00 am PT/12 pm ET. more
BUILD: Microsoft to Detail Windows Server 8 On the second day of its inaugural BUILD Conference, Microsoft will detail the next major version of its server OS, Windows Server 8. more
Windows 8 Features and Terminology
 As the author of several books about Microsoft platforms--Windows Phone 7 Secrets most recently, and of course the coming Windows 8 Secrets--I'm very concerned about documenting both the features of these platforms--applications, services, and so on--but also the terminology that Microsoft uses to describe them. These things have names, and need to be referenced properly. Here's an early peek at where I'm at. more
Windows 8 Developer Preview: Samsung 700T Photo Gallery
 Microsoft this week provided reviewers with a very temporary loan of a specially made slate PC running the Windows 8 technical preview. And when I say temporary, I mean temporary: We have to give this machine back on Thursday evening before we leave BUILD. more
BUILD: Microsoft Announces Windows 8 Developer Preview Microsoft announced a developer-preview release of Windows 8 at its first-ever BUILD Conference, ushering in a new era for both PC users and developers. Windows 8 is a "reimagined" version of the world's most popular software, as Microsoft executives are fond of saying, offering both an iPad-like "touch-first" user experience as well as the traditional Windows desktop. more
Windows 8 Developer Preview Screenshots, Part 2
 Here's a collection of live screenshots from Windows 8 build 8102--the developer preview--running on a loaner slate PC. (Part 2 of 2)
Windows 8 Developer Preview Screenshots, Part 1 Here's a collection of live screenshots from Windows 8 build 8102--the developer preview--running on a loaner slate PC. (Part 1 of 2) more
Windows 8 Developer Preview Screenshot Gallery
 Here's a small collection of Windows 8 developer preview (build 8102) screenshots, courtesy of Microsoft. more
Windows 8 Developer Preview
 On Monday, I attended an all-day reviewer workshop for Windows 8, Microsoft's next desktop operating system. And while it may be a while before I can adequately describe my thoughts about Windows 8, for now it goes something like this... more
Windows 8: A Reimagined PC, But What About Businesses? At its first-ever BUILD conference this week in Anaheim, California, Microsoft is showing off its upcoming Windows 8 and Windows Server 8 releases to the public for the first time. more
BUILD: Live from Anaheim, CA This will serve as the central clearing house for all the Windows 8 articles, blog posts, screenshot galleries, and other content I create while attending BUILD in Anaheim, California this week. more
Heading Into BUILD, What We Know About Windows 8
 Next week, Microsoft will host its inaugural BUILD conference, which has one aim and one aim only: To reveal Windows 8 to the world.



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