creating fractals in javascript

Just found out about the Context Free Art project through it’s javascript port, ContextFree.js done by Aza Raskin, the same guy involved in the development of Firefox. Raskin developed a lovely playful site, Algorithm Ink. I actually showed it to a friend who’s not a developer and she started playing right away : )

Here’s an example: http://azarask.in/projects/algorithm-ink/#aa486456 . Click browse to see lots more.

NLP e Língua Portuguesa

Desde há algum tempo que tenho alguma curiosidade sobre NLP (natural language processing) tanto a nível teórico (como funcionam os algoritmos que usam) como a nivel prático. Não existe por exemplo, um serviço semelhante ao Apture para português. Assim, derivados das minhas pesquisas aqui vão alguns links que achei interessantes:

LXSuite - um conjunto de webservices para a análise linguística de texto desenvolvido pela Universidade Lisboa. Na LxSuite estão todos juntos mas podem ser vistos em separado no LxCenter. Infelizmente, o serviço não tem api e é necessário consentimento para o seu uso.

LXService:  Web Services of Language Technology for Portuguese - artigo a descrever o desenvolvimento dos webservices acima.

Linguateca - todo um conjunto de recursos de NLP para a língua portuguesa. O HAREM - NER for portuguese e respectivo livro está aqui. Eles também disponibilizam vários corpus para português aqui, inclusivé o CETEMPúblico (disponível para download gratuitamente).

Portuguese Language Processing Service - um artigo sobre o desenvolvimento dum conjunto de webservices de NLP para língua portuguesa desenvolvido no Brasil. De acordo com os próprios:

In this paper, we describe F-EXT-WS, a Portuguese Language Processing Service that is now available at the Web. The first version of this service provides Part-of-Speech Tagging, Noun Phrase Chunking and Named Entity Recognition. All these tools were built with the Entropy Guided Transformation Learning algorithm, a state-of-the-art Machine Learning algorithm for such tasks.

Este artigo parece interessante e pode ser um ponto de partida para outras explorações (ex. ETL/Entropy Guided Transformation Learning - ver Portuguese corpus-based learning using ETL). Fui ver o F-EXT-WS mas é necessário registo e deu erro.

Alguém conhece outros recursos interessantes dentro desta àrea?

Standalone cache according to http requests

Maybe this already exists but since my searches didn’t turn up anything, i thought i’d post this.

You have an app coded more or less rest style. Every post request implies there was a data change (-> cache becomes stale), every get request implies there was no change in the data (-> cache stays fresh). So you know that if a post request was made to domain.com/admin/news, the news cache becomes stale. I won’t go really deep here, in that if you change item 8 of the news table, you might only have 2 stale caches, the one that lists the news and the one that shows item 8 of the news table ( ie. domain.com/news and domain.com/news/8 or domain.com/news/title-of-article) and not every cache belonging to the news group but let’s keep it simple here.

I would like to know if there’s anything out there that parses the apache logs for post requests and if there was a post/put/delete in any url, according to a few configurable rules, it will automatically do a get to the correspondent url. For example, if a post was made to domain.com/admin/news/8 then it would be able to, upon parsing of the apache logs, do a get request to domain.com/news/8, generating the cache for the next user that comes along instead of waiting for the next user to generate a fresh cache - keeping him waiting . It would just increase the cache hit ratio per user. It would of course run as a cron job.

I like this solution because it really keeps the caching code (if cache exists, expire cache, use cache, etc) outside the app, becoming simply another layer, where it really should be.

I really think that this makes sense from a rest perspective so i suspect it’s already out there..

So anyone know of anything? Preferably in php, but python or ruby is ok too.

Thanx :=)