21 février 2019

‘Secret sharing’ system keeps your personal data safe

Stephen Downes PhotoBy Stephen Downes - Stephen's Web. ‘Secret sharing’ system keeps your personal data safe
Taylor Kubota-Stanford, Futurity, 2018/11/14
The article feels more like marketing than data but it does indicate a trend toward secure personal information online. And the Prio mechanism it proposes could work, I think. More...

Posté par pcassuto à 08:37 - - Permalien [#]


15 février 2019

5 Levels

Stephen Downes PhotoBy Stephen Downes - Stephen's Web. 5 Levels
Wired, YouTube, 2018/11/02
I'm enjoying the '5 Levels' series of videos from Wired. The idea is that a specialist explains the same concept at five distinct levels of complexity, beginning with an explanation to a young child, and progressive to discussing it with another specialist. More...

Posté par pcassuto à 18:18 - - Permalien [#]

On Distributing Distributed Technology, Long Tails, and Scaling

Stephen Downes PhotoBy Stephen Downes - Stephen's Web. On Distributing Distributed Technology, Long Tails, and Scaling
Ton Zijlstra, Interdependent Thoughts, 2018/11/01
In any technology cycle (including learning technology) "Long tail forming as an adoption pattern is a good way then to see if broad distribution is being achieved," writes Ton Zijllstra. This is the proposition he asserts of Mastodon, which has a big head (or a big spike) of a few very large instances, but only a stubby tail of very few small-scale adopters. More...

Posté par pcassuto à 18:16 - - Permalien [#]

IRUS-UK collaboration: consistent, comparable usage statistics to demonstrate the growth of OA

Stephen Downes PhotoBy Stephen Downes - Stephen's Web. IRUS-UK collaboration: consistent, comparable usage statistics to demonstrate the growth of OA
Hilary Jones, JISC, 2018/10/26

This article offers a brief overview and, more importantly, three case studies (quoted from the article):

  • CORE is an aggregation of open access content from UK and worldwide repositories and open access journals. View the case study here.
  • The OAPEN Foundation is dedicated to open access, peer-reviewed books and operates two platforms, the OAPEN Library, a central repository for hosting and disseminating OA books, and the Directory of Open Access Books (DOAB), View the case study here.
  • OpenAIRE is an initiative supported by the European Commission with the general remit to implement EC Open Access and Open Data policies and mandates. More...

Posté par pcassuto à 07:57 - - Permalien [#]

14 février 2019

Are digital technologies the new Holy Grail ?

https://oecdecoscope.files.wordpress.com/2016/02/cropped-blog-clouds.jpgBy . Digital innovations are everywhere, in our pockets, cars and homes. However, while digital technologies seem to offer great potential to enhance firm productivity, productivity growth has slowed sharply in most OECD countries over the past two decades. More...

Posté par pcassuto à 20:56 - - Permalien [#]


2018 Students and Technology Research Study

Stephen Downes PhotoBy Stephen Downes - Stephen's Web. 2018 Students and Technology Research Study
Dana C. Gierdowski, D. Christopher Brooks, Joseph Galanek, EDUCAUSE, 2018/10/25

From this report (47 page PDF) some of the the key findings (quoted):

  • Practically all college and university students (in the U.S.)  have access to the most important technologies for their academic success.
  • While laptops, hybrids, desktops, and smartphones continue to be rated as very to extremely important to student success, the importance of these devices differs considerably by student demographics. More...

Posté par pcassuto à 11:49 - - Permalien [#]

Here's What I Covered In My 4 DevLearn Presentations

Stephen Downes PhotoBy Stephen Downes - Stephen's Web. Here's What I Covered In My 4 DevLearn Presentations
Mel Milloway, Blog, 2018/10/29
Mel Milloway had a pretty busy conference. In his first session he has "the audience go through my Is It Edible? activity and guess what JavaScript was used." Thast's a nice way to do a "how do do it with Javacript" session. More...

Posté par pcassuto à 09:31 - - Permalien [#]

This robot co-taught a course at West Point

Stephen Downes PhotoBy Stephen Downes - Stephen's Web. This robot co-taught a course at West Point
Khorri Atkinson, Axios, 2018/10/24
"Bina48 co-taught two sessions of an introduction to ethics philosophy course — which covers ethical reasoning, just-war theory and the use of artificial intelligence in society. In the classroom were almost 100 students, along with Barry and Maj. Scott Parsons, an assistant professor at West Point." I think "taught" is a very generous statement of what probably actually happened. More...

Posté par pcassuto à 08:13 - - Permalien [#]

4 human-caused biases we need to fix for machine learning

Stephen Downes PhotoBy Stephen Downes - Stephen's Web. 4 human-caused biases we need to fix for machine learning
Glen Ford, TheNextWeb, 2018/10/28
The response to three of the four biases reported in this post is diversity. And I would add that just as machines need diversity in order to avoid bias, so do humans. That's why diversity is valuable. Anyhow here's the breakdown of the three (all quoted from the text):

  • Sample bias is a problem with training data... (we need a sample) both large enough and representative enough to mitigate sample bias.
  • Measurement bias happens when there’s an issue with the device used to observe or measure... best avoided by having multiple measuring devices (and I would add, multiple types of measuring devices)
  • Algorithm bias is a mathematical property of an algorithm. The counterpart to bias in this context is variance.

The fourth type of bias is prejudice bias, and "is a result of training data that is influenced by cultural or other stereotypes." More...

Posté par pcassuto à 08:13 - - Permalien [#]

The State of Video in Education 2018

Stephen Downes PhotoBy Stephen Downes - Stephen's Web. The State of Video in Education 2018
Kaltura, 2018/10/16

The website takes you through a spamwall but the direct link to the 31 page PDF should work (I tested it). It's a pretty brisk read pointing to the increased use of video in learning. More...

Posté par pcassuto à 08:08 - - Permalien [#]