Jason Carreira

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since Oct 25, 2005
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Recent posts by Jason Carreira

Thanks very much! It sounds like an excellent book, and it's timely for me as I'm getting into this area right now.
13 years ago
Take a look at this post from long long ago:

GUIDs without Singletons and Databases

I've had an implementation of this that I've brought with me ever since. It's very fast (like my test harness took most of the time when I tried to measure it) and you can easily generate 100's of thousands of GUIDs per second per node.
13 years ago
After you crawl with Nutch, do you do anything with the created indexes? Do you look at the term vector from Lucene and build up correlations between documents?
13 years ago
Satnam, In your sections on Nutch, do you tie into Nutch to do pre-calculations using the indexed values (for instance the term vector) as the pages are finished? I've been trying to go through their docs for any event callback points, but it's not very obvious.
13 years ago
Hi Satnam,

I'm very interested in your book because I'm working on a recommender system right now... It's my first foray into Collective Intelligence / Recommender systems and there's a lot of theory out there to digest.

I'm wondering what algorithms you cover for neighborhood detection, as I've seen some studies showing that the most popular one, the kMeans algorithm, seems to do a pretty poor job on a lot of data sets. Also, what algorithms are there for understanding people having multiple interests and being part of multiple neighborhoods. For example, I'm a Java programmer (obviously) but I'm also a photographer, father, etc. and each of those are separate interest neighborhood groupings.

Thanks!

Jason Carreira
13 years ago

Originally posted by Karthik Guru:
Hello Authors,

I dont know much about WebWork except that its like Struts / Spring MVC.
The book TOC talks about WW IOC. How does that compare with say Spring IOC?. Can the WW IOC container be used independent of WW?

thanks..



WebWork's IoC is very simple compared to those other IoC containers. It makes the simple things very very simple. WebWork IoC has been deprecated in the current release candidates for WebWork 2.2, however, because we don't want to maintain and extend an IoC container when there are more mature and powerful containers out there. Instead, we're going to focus our attention on bringing the simplicity we strive for to using WebWork with Spring and making that integration as transparent and low-effort as possible.

Originally posted by muinsh sharif:
Hi all,
I am developing this web based application which uses struts as the web framework.I hav been hit by the ajax bug and i want to use that tech in my application.Wanted to know the support of ajax in the different availabe web frameworks.

thnx.



WebWork 2.2 has an Ajax theme for our UI widgets. This lets you do things like have a DIV which is automatically refreshed from the server every 10 seconds, for example. We use the Dojo toolkit and make heavy use of the dojo.event.topic functionality which lets you set up publish/subscribe topics in your page. This lets you have some parts of your page generate events and have n other parts of the page get the event and update themselves or do some other action, all without having to hard-wire the pieces together. It makes for a nice, loosely coupled way of building in-page AJAX applications with reusable components.