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It is common to use R language to group and summarize data of files. Sometimes we may find ourselves processing comparatively big files which have smaller computed result and bigger source data. We cannot load them wholly to the memory when we need to compute them. The only solutions could be batch importing and computing as well as result merging. We’ll use an example in the following to illustrate the way of R language to group and summarize data from big text files.
Here is a file,…Continue
We all know the constant struggle between IT and business users when it comes to BI software: Business users want to access data in order to make fast decisions independently, without having to use IT as a middle man every time a new requirement arises, query is run, or data is added. Yet, IT is overwhelmed by constantly changing requests and requirements, and struggle to deliver data in an actionable time-frame. The…Continue
Added by Elana Roth on August 19, 2014 at 2:30am — No Comments
Global Energy Forecasting Competition 2014 by IEEE - Power Energy Society launches on CrowdANALYTIX platform. Check out the 4 tracks of your choice: Electric Load, Electric Price, Wind Power and Solar Power.
IEEE, the world’s largest professional organization dedicated to advancing technology for humanity, today announced the start of the Global Energy Forecasting Competition 2014 (GEFCom2014)—sponsored by the IEEE Power & Energy Society (PES) and organized by the IEEE Working…Continue
Added by mohans on August 19, 2014 at 1:45am — No Comments
Originally posted on sctr7.com.
Network analysis is a rapidly growing analytics domain propelled by the explosion of interest in social networking. The methods rest upon much older foundations in the realms of statistics and social science. Euler’s graph theory was proposed in the early 18th century and Moreno established the foundations for…Continue
Added by Scott Mongeau on August 15, 2014 at 1:30am — No Comments
If I told you all of our modern activities–posts to social media sites, transaction records, online activities, digital pictures and videos, and mobile GPS signals to name a few– leave a trail of data behind that is estimated to produce about 2.5 quintillion bytes of data each day, would you have a real feel for how much data that is? Even if I defined that number more clearly as 1 followed by 18 zeros, many tech veterans and savvy business leaders still have trouble digesting the scope of…Continue
Added by Elana Roth on July 31, 2014 at 4:30am — No Comments
The computing power of SQL for mass structured data is complete, that is to say, it is impossible to find anything that SQL cannot compute. But its support layer is too low, which can lead to over-elaborate operation in practical application.…Continue
Added by Jessica May on July 27, 2014 at 9:30pm — No Comments
With elevating popularity for smartphones and other mobile devices, there is also increasing demand for mobile accessories like covers etc. A recent study showed that smartphone owners spend roughly $56 on accessories per device, nearly double the amount of feature phone owners. Smartphone case market is one of the latest examples of products that were originally intended to be functional and evolved into fashion statements and spurred an industry to make devices unique and…Continue
Added by mohans on July 24, 2014 at 11:06pm — No Comments
Both esProc and R language are typical data processing and analysis languages with two-dimension…Continue
Added by Jessica May on July 21, 2014 at 1:36am — No Comments
Digital content has gone through significant changes in past couple of decades. From DVDs to internet streaming, from Blu-ray to 4k, HD and from TVs to desktops to mobile, viewing patterns have transformed and so has the economics of the industry.
For example: Netflix’s business model of On-demand streaming is a whopping 4.7 billion USD business with over 10 million subscribers.…Continue
Added by mohans on July 17, 2014 at 12:01am — No Comments
Text files often brings headache for data analysts, are there any more convenient way for text files process? I prepare a case on how esProc deal with it, including import various text files; process big text files; visit text files of hdfs; as well as general operations, such as, file moving, deleting and checking whether a file exists. The following will illustrate these functions through examples. …Continue
Added by Jessica May on July 14, 2014 at 1:30am — No Comments
The application of network analysis to the growing challenge of fraud and financial crime is a fast emerging advanced data analytics frontier. As any good fraud investigation knows, fraud and financial crime are as much…Continue
Added by Scott Mongeau on July 10, 2014 at 1:01pm — No Comments
Added by Phuoc Do on July 1, 2014 at 5:30pm — No Comments
We’ve just wrapped up another eventful season of the annual phenomenon that is the Indian Premier League. Records were broken, trophies and caps won, and careers and fortunes made in a span of 6 high-octane weeks. Fans, being the lifeblood of any successful sporting event, were given extra-special attention this time around. The millions of tweets that social-media savvy fans across India tweeted during the tournament formed a veritable growing corpus of social content that was used through…Continue
Added by Farid Jalal on June 27, 2014 at 12:42am — No Comments
Each county within a state in the US maintains strict accounting standards with regards to cash inflows and outflows namely revenue and expenses. There are various funds institutionalized to serve this purpose for various categories such as education, energy, environment, health and human services, housing and community development etc. The governmental fund concept means that:
Added by mohans on June 20, 2014 at 3:00am — No Comments
Sharing a lecture introducing business analytics to agroup of MBA and MIS students at Erasmus Rotterdam School of Management:
Part 1 of 4: https://www.youtube.com/watch?v=KFYYDrEV4wI
Part 2 of 4: …Continue
Added by Scott Mongeau on May 19, 2014 at 9:37am — No Comments
Data is everywhere (that's indisputable). What I didn't realize was how often--and how subtly--personal big trails get created every day.
Case in point, I went to Kohl's to use up a free $10 rewards coupon card last weekend. While I was checking out, the cashier asked me for my phone number. I paused. I didn't understand why he needed…Continue
Added by Mar on May 5, 2014 at 8:49pm — No Comments
All of us at some point in the process of examining…Continue
Added by aatash shah on February 27, 2014 at 5:36am — No Comments
How do you know that the candidate that you're going hire will become a high performer? Should you choose the candidate with 3.5 GPA and reject the candidate with 2.5 GPA? However, how do you know for sure that higher GPA will have better performance compared to those with lower GPA? And why company like Google and AT&T start choose candidate with less academic records or from non prestigious schools?
On the other hand, if you are a job seeker, with your current strength…Continue
Added by Eka Aulia on February 22, 2014 at 7:02pm — No Comments
What do we predict for the Indian Analytics Industry this year? Here is what we put together at IVY after talking with our analytics recruiters, alumni, clients, and industry associates:…Continue
Added by Ivy Pro School on February 1, 2014 at 10:53pm — No Comments
check out our post on optimizing natural gas supply to Boston
Added by Parag Patil on December 10, 2013 at 8:12am — No Comments