# \[ANN\] acts\_as\_classifiable plugin **URL:** \ **Category:** Rails\ **Created:** [May 18, 2006, 10:52pm UTC](https://www.ruby-forum.com/t/ann-acts-as-classifiable-plugin/60966 "2006-05-18T22:52:54Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![surendra\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ad7895/32.png) [@surendra\_s](https://www.ruby-forum.com/u/surendra_s)\ **Post date:** [May 18, 2006, 10:52pm UTC](https://www.ruby-forum.com/t/ann-acts-as-classifiable-plugin/60966/1 "2006-05-18T22:52:54Z")
Hello, I am pleased to announce the availability of the plugin acts\_as\_classifier which allows using the ‘classifier’ gem in a Rails application. This plugin can be downloaded from [http://opensvn.csie.org/sksinghi/acts\_as\_classifiable/](http://opensvn.csie.org/sksinghi/acts_as_classifiable/) This plugin is useful in scenarios where you want to distinguish between spam or non-spam comments, Or maybe you want to track the preferences of each user and then based on that make suggestions to them, etc. More information + example on this can be found at: [http://cuttingtheredtape.blogspot.com/2006/05/actsasclassifiable.html](http://cuttingtheredtape.blogspot.com/2006/05/actsasclassifiable.html) Any issues/questions let me know. – Surendra S. [http://ssinghi.kreeti.com](http://ssinghi.kreeti.com), [http://www.kreeti.com](http://www.kreeti.com) Read my blog at: [http://cuttingtheredtape.blogspot.com/](http://cuttingtheredtape.blogspot.com/) ,---- | “War is Peace! Freedom is Slavery! Ignorance is Strength!” | – Orwell, 1984, 1948 `---- ---
**Author:** ![surendra\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ad7895/32.png) [@surendra\_s](https://www.ruby-forum.com/u/surendra_s)\ **Post date:** [May 19, 2006, 5:01am UTC](https://www.ruby-forum.com/t/ann-acts-as-classifiable-plugin/60966/2 "2006-05-19T05:01:40Z")
Published at [http://agilewebdevelopment.com/plugins/](http://agilewebdevelopment.com/plugins/) acts\_as\_classifiable 🙂 – Benjamin C. [http://www.bencurtis.com/](http://www.bencurtis.com/) [http://www.tesly.com/](http://www.tesly.com/) – Collaborative test case management [http://www.agilewebdevelopment.com/](http://www.agilewebdevelopment.com/) – Resources for the Rails community ---
**Author:** ![surendra\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ad7895/32.png) [@surendra\_s](https://www.ruby-forum.com/u/surendra_s)\ **Post date:** [May 19, 2006, 5:28pm UTC](https://www.ruby-forum.com/t/ann-acts-as-classifiable-plugin/60966/3 "2006-05-19T17:28:34Z")
That’s great Surendra. (having read your posted information) For those of us not familiar with Bayesian classifiers, I’m don’t understand how it would be used to classify. You mention training - are we required to implement methods to do the classification? I definetly have some requirements for such a gem, but am unsure how I’d go about actually using it. Thanx again. Jodi ---
**Author:** ![surendra\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ad7895/32.png) [@surendra\_s](https://www.ruby-forum.com/u/surendra_s)\ **Post date:** [May 19, 2006, 6:13pm UTC](https://www.ruby-forum.com/t/ann-acts-as-classifiable-plugin/60966/4 "2006-05-19T18:13:54Z")
grin. thanx Peter (i’m the one to usually suggest obvious references. lol) . I think that wp entry gave me enough info to start. ie. the specific application of training and initial classification are the keys to usage. cheers, J ---
**Author:** ![surendra\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ad7895/32.png) [@surendra\_s](https://www.ruby-forum.com/u/surendra_s)\ **Post date:** [May 19, 2006, 5:57pm UTC](https://www.ruby-forum.com/t/ann-acts-as-classifiable-plugin/60966/5 "2006-05-19T17:57:13Z")
> (having read your posted information) For those of us not familiar > with Bayesian classifiers, I’m don’t understand how it would be > used to classify > **[Recursive Bayesian estimation](https://en.wikipedia.org/wiki/Bayesian_filter)** > > In probability theory, statistics, and machine learning, recursive Bayesian estimation, also known as a Bayes filter, is a general probabilistic approach for estimating an unknown probability density function (PDF) recursively over time using incoming measurements and a mathematical process model. The process relies heavily upon mathematical concepts and models that are theorized within a study of prior and posterior probabilities known as Bayesian statistics. > A Bayes filter is an algorithm used... Best regards Peter De Berdt ---
**Author:** ![surendra\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ad7895/32.png) [@surendra\_s](https://www.ruby-forum.com/u/surendra_s)\ **Post date:** [May 19, 2006, 8:06pm UTC](https://www.ruby-forum.com/t/ann-acts-as-classifiable-plugin/60966/6 "2006-05-19T20:06:22Z")
Jodi S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) writes: > grin. thanx Peter (i’m the one to usually suggest obvious references. > lol) . I think that wp entry gave me enough info to start. > > ie. the specific application of training and initial classification > are the keys to usage. The current Bayesian classifier gem can do with some sprucing up[1]. Right now, it doesn’t uses prior probabilities, no classification threshold, cost-sensitive learning, etc. But, it should be good for general usage. Also, tuning it do better will require some experience with the domain where you are using it. [1]I posted a message on the classifier gem forum, but haven’t got a reply so far, maybe I should try sending them a personal email. Cheers. – Surendra S. [http://ssinghi.kreeti.com](http://ssinghi.kreeti.com), [http://www.kreeti.com](http://www.kreeti.com) Read my blog at: [http://cuttingtheredtape.blogspot.com/](http://cuttingtheredtape.blogspot.com/) ,---- | “War is Peace! Freedom is Slavery! Ignorance is Strength!” | – Orwell, 1984, 1948 `----