Benki → Bookmarks

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“Incanter is a Clojure-based, R-like platform for statistical computing and graphics.

“Incanter can be used as a standalone, interactive data analysis environment or embedded within other analytics systems as a modular suite of libraries.

“Features:

  • Charting & visualization functions
  • Mathematical functions
  • Statistical functions
  • Matrix & linear algebra functions
  • Data manipulation functions”

“Today I will talk about an elegant way of answering rank queries on sequences over larger alphabets. The structure is called the Wavelet Tree, which organises a string into a hierarchy of bit vectors. A rank query has time complexity is O(log_2 A), where A is the size of the alphabet. It was introduced by Grossi, Gupta and Vitter in their 2003 paper High-order entropy-compressed text indexes.”

“I thought I’d documment how to generate a server TLS certificate using CACert. This can be useful if you are running a mail or web server and easily (and cost free) want to support TLS for integrity/confidentiality. I just re-installed my secondary mail server, and tested this recipe with Exim4 with Debian. See below for a step-by-step howto.”

„Elementarfragen ist, wie der Titel bereits vermuten lässt, ein Podcast über Fragen. Fragen, deren Behandlung den Hörern ein Kennenlernen bestimmter Personen und einen Zugang zu bestimmten Themengebieten ermöglichen können. In Interviews wird versucht, derartige Fragen zu stellen. Naivität soll hierbei ein Grundprinzip sein. Klare Fragen ergeben klare Antworten.“

„Haben Sie sich in der Dauerkrise schon häuslich eingerichtet? Können Sie noch den Überblick behalten, bei all den über uns zusammenbrechenden Schuldenbergen? Für alle, die endlich im Krisendickicht durchblicken wollen, hier nun ein ganz besonderer Service: Werden Sie in wenigen Minuten zum Krisenexperten und Bescheidwisser, mit den großen FAQ zur Krise – diesmal mit verbesserter Kapitalismuskritikformel!“

„Eine neue Dolchstoßlegende macht die Runde: „unsere Wirtschaft“ soll der grenzenlosen Habgier einer Handvoll Banker und Spekulanten zum Opfer gefallen sein. Gefüttert durch das billige Geld der US-Zentralbank und unterstützt durch unverantwortliche Politiker hätten sie die Welt an den Rand des Abgrunds geführt, während ‚die Ehrlichen mal wieder die Dummen‘ seien.

Nichts ist sachlich so falsch und ideologisch so gemeingefährlich wie diese auf allen Kanälen der öffentlichen Meinung verbreitete Vorstellung. Umgekehrt wird ein Schuh daraus.“

“Frink is a calculating tool and programming language designed by Alan Eliasen. It incorporates features similar to PerlLanguage, RubyLanguage, JavaLanguage, SmalltalkLanguage, and various BasicLanguage implementations. Its primary focus is on the fields of science, engineering, physics, text processing, and education. …

“One of the distinguishing characteristics of Frink is that it tracks units of measure through all calculations. This allows all values to contain a quantity and its units of measure. Frink understands how different units of measure interrelate, such as a length cubed is a volume, or power multiplied by time is energy. Different units of measure can be mixed in calculations, and Frink automatically ensures that the calculations lead to a result with the expected dimensions.”

““Sintel” is an independently produced short film, initiated by the Blender Foundation as a means to further improve and validate the free/open source 3D creation suite Blender. With initial funding provided by 1000s of donations via the internet community, it has again proven to be a viable development model for both open 3D technology as for independent animation film. This 15 minute film has been realized in the studio of the Amsterdam Blender Institute, by an international team of artists and developers. In addition to that, several crucial technical and creative targets have been realized online, by developers and artists and teams all over the world.”

“Frink is a practical calculating tool and programming language designed to make physical calculations simple, to help ensure that answers come out right, and to make a tool that’s really useful in the real world. It tracks units of measure (feet, meters, kilograms, watts, etc.) through all calculations, allowing you to mix units of measure transparently, and helps you easily verify that your answers make sense. It also contains a large data file of physical quantities, freeing you from having to look them up, and freeing you to make effortless calculations without getting bogged down in the mechanics.”

“This paper will attempt to get a sense of how difficult it is to write computer program in various languages. We develop a model of a computer programmer and estimate the likelihood of the programmer developing a syntactically correct program.”

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