Robert A. Uhl

One year of Linux

No, not me (I’ve been using Linux for almost nine years now); Mark Pilgrim recently completed one year of using Linux (he switched from Mac OS). His verdict? Well, he prefers Linux to Mac OS and Windows. No real surprise there … 05 February 2018: updated URLs Read more →

One year of Linux

No, not me (I’ve been using Linux for almost nine years now); Mark Pilgrim recently completed one year of using Linux (he switched from Mac OS). His verdict? Well, he prefers Linux to Mac OS and Windows. No real surprise there … 05 February 2018: updated URLs Read more →

What are capabilities?

EROS was a nifty operating system project which implemented some excellent ideas; one of these was capabilities — a novel approach to handling security and access controls. One of the developers of EROS wrote an introduction to capabilities which is useful to understand this intriguing concept. Read more →

What are capabilities?

EROS was a nifty operating system project which implemented some excellent ideas; one of these was capabilities — a novel approach to handling security and access controls. One of the developers of EROS wrote an introduction to capabilities which is useful to understand this intriguing concept. Read more →

A guide tour of emacs

The GNU project now have a guided tour of emacs which shows many of the neat features of the world’s best text editor/web browser/mail reader/news client/integrated development environment/scheduler/task planner/personal organiser/kitchen sink. If you don’t already use emacs, take a peek to see what a real text manipulation environment is like. If you do already use emacs, take a look to see what features it offers which you may not yet use. Read more →

A guide tour of emacs

The GNU project now have a guided tour of emacs which shows many of the neat features of the world’s best text editor/web browser/mail reader/news client/integrated development environment/scheduler/task planner/personal organiser/kitchen sink. If you don’t already use emacs, take a peek to see what a real text manipulation environment is like. If you do already use emacs, take a look to see what features it offers which you may not yet use. Read more →

Hyperspatial text classification

Hyperspatial Text Classification While reading the docs for CRM114 (a text classification engine; text classification can be used to determine if email is spam; if a log entry is important; or if a newspaper article is worth reading) I discovered that it supports a hyperspatial classifier. It’s a pretty neat idea: a document is broken into its component features (e.g. phrases and individual words; this step is pretty standard for classifiers); each feature is then hashed to a 32-bit integer value; the document is then considered to be a point in a 232-dimensional space — if a feature is present once, then the value of that dimension is one; if twice, then two and so forth. Read more →

Hyperspatial text classification

Hyperspatial Text Classification While reading the docs for CRM114 (a text classification engine; text classification can be used to determine if email is spam; if a log entry is important; or if a newspaper article is worth reading) I discovered that it supports a hyperspatial classifier. It’s a pretty neat idea: a document is broken into its component features (e.g. phrases and individual words; this step is pretty standard for classifiers); each feature is then hashed to a 32-bit integer value; the document is then considered to be a point in a 232-dimensional space — if a feature is present once, then the value of that dimension is one; if twice, then two and so forth. Read more →

How one man became a music ‘pirate’

Read on to learn how the music industry’s insanity turned a man with upwards of $20,000 in records and CDs into a music ‘pirate.’ Make a quality product at a reasonable price, and people will buy it. Make a rotten product at an insane price, and they won’t. Is that so hard to understand? Read more →

How one man became a music ‘pirate’

Read on to learn how the music industry’s insanity turned a man with upwards of $20,000 in records and CDs into a music ‘pirate.’ Make a quality product at a reasonable price, and people will buy it. Make a rotten product at an insane price, and they won’t. Is that so hard to understand? Read more →