Sunday, May 10, 2015

education: courses, classes or lessons?

meaning - What is the difference between taking courses, classes or lessons? - English Language & Usage Stack Exchange
  • Course is the broadest term for the study of a subject. It could be used to refer to an entire degree program, but it is most appropriately applied to a specific subject such as First Year English Literature.
  • Class is more specific and is most properly applied to a section of a course taught by one instructor to one group of students at a certain scheduled time.
  • Lesson is the most specific and implies a particular unit of instruction, such as would be delivered by a particular instructor to a particular class on a given day.

Azure "Data Lake"

data lake - Wiktionary
"If you think of a datamart as a store of bottled water – cleansed and packaged and structured for easy consumption – the data lake is a large body of water in a more natural state. The contents of the data lake stream in from a source to fill the lake, and various users of the lake can come to examine, dive in, or take samples."

Data lake @ Microsoft Azure
"A hyper scale repository for big data analytic workloads
  • A Hadoop Distributed File System for the Cloud
  • No fixed limits on file size
  • No fixed limits on account size
  • Unstructured and structured data in their native format
  • Massive throughput to increase analytic performance
  • High durability, availability and reliability
  • Azure Active Directory access control
  • Intuitive management console"

Microsoft Build 2015: Data Lake - YouTube

Introducing Azure Data Lake | Microsoft Azure Blog

Microsoft announces Azure SQL Data Warehouse and Azure Data Lake in preview | VentureBeat | Cloud | by Jordan Novet

"The data lake strategy is part of a greater movement toward data liberalization. It started with the printing press and moving the books out of the monastery. Sure, there was confusion and a schism, but did we really want to wait for the monks to decide who gets the handwritten books?"
It continues with the Internet...
Now Gartner has aligned itself with the data monks who sit over the data and horde it in usually expensive, proprietary technologies..."

A/B testing

online free course (or class?):

A/B Testing - Udacity (+Google)

A/B testing - Wikipedia, the free encyclopedia
"In marketing and business intelligence, A/B testing is jargon for a randomized experiment with two variants, A and B, which are the control and treatment in thecontrolled experiment .[1] It is a form of statistical hypothesis testing with two variants leading to the technical term, Two-sample hypothesis testing, used in the field of statistics
As the name implies, two versions (A and B) are compared, which are identical except for one variation that might affect a user's behavior. Version A might be the currently used version (control), while Version B is modified in some respect (treatment)."

IoT: $9 computer "CHIP" (!)

The World's First $9 Computer: Meet Chip by Next Thing Co.
"...Oakland, CA is Next Thing Co. a team of nine artists and engineers who are pursuing the dream of a lower cost single board computer. Today they’ve unveiled their progress on Kickstarter, offering a $9 development board called Chip.

The board is Open Hardware, runs a flavor of Debian Linux, and boasts a 1Ghz R8 ARM processor, 512MB of RAM, and 4GB of eMMC storage. It is more powerful than a Raspberry Pi B+ and equal to the BeagleBone Black in clock speed, RAM, and storage. Differentiating Chip from Beagle is its built-in WiFi, Bluetooth, and the ease in which it can be made portable, thanks to circuitry that handles battery operation."

Meet Chip, the $9 computer

"spend an additional $10 (VGA) or $15 (HDMI) if you want high-resolution video, but as-is, it's an amazing price for a complete system capable of running Linux out of the box."