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https://issues.apache.org/jira/browse/OFBIZ-5928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14259111#comment-14259111 ]
Divesh Dutta edited comment on OFBIZ-5928 at 12/27/14 6:22 AM:
---------------------------------------------------------------
Hello [~golja],
First of all congratulations for the great work and thanks for uploading prototype of a Product Association recommender.
I didn't get chance to run the service "getProductAssociationRecommendations" but I got chance to look into the code of service. I have a question in method "compareConditionalProbabilities" . In this method, when you are calculating probability of Y given not X,
{code}
double conditionalProbabilityGivenNotProductId;
if (occurrences[1][0] + occurrences[1][1] > 0) {
conditionalProbabilityGivenNotProductId = (double) occurrences[1][0] / (double) (occurrences[1][0] + occurrences[1][1]);
} else {
conditionalProbabilityGivenNotProductId = (double) occurrences[1][0] / (double) (occurrences[1][0] + occurrences[1][1]);
}
{code}
Could you please explain, what this if condition is handling ? Also code in both the conditions are same. I suspect that, this should not be the case.
I will run the service and tests and give my feedback on this.
was (Author: diveshdut):
Hello Anahita,
First of all congratulations for the great work and thanks for uploading prototype of a Product Association recommender.
I didn't get chance to run the service "getProductAssociationRecommendations" but I got chance to look into the code of service. I have a question in method "compareConditionalProbabilities" . In this method, when you are calculating probability of Y given not X,
{code}
double conditionalProbabilityGivenNotProductId;
if (occurrences[1][0] + occurrences[1][1] > 0) {
conditionalProbabilityGivenNotProductId = (double) occurrences[1][0] / (double) (occurrences[1][0] + occurrences[1][1]);
} else {
conditionalProbabilityGivenNotProductId = (double) occurrences[1][0] / (double) (occurrences[1][0] + occurrences[1][1]);
}
{code}
Could you please explain, what this if condition is handling ? Also code in both the conditions are same. I suspect that, this should not be the case.
I will run the service and tests and give my feedback on this.
> Prototype of a Product Association recommender
> ----------------------------------------------
>
> Key: OFBIZ-5928
> URL:
https://issues.apache.org/jira/browse/OFBIZ-5928> Project: OFBiz
> Issue Type: New Feature
> Reporter: Anahita Goljahani
> Priority: Minor
> Attachments: recommender.zip
>
>
> Hi all, as anticipated in my ApacheCon Europe presentation 'Introduction to a Recommender System for Apache OFBiz' (downloadable from
https://cwiki.apache.org/confluence/x/OYPfAg), I have developed a prototype of a Product Association recommender for OFBiz. Product Association recommendations are suggestions of the type 'Customers who bought this item also bought:', that are provided to online shoppers to help them in the selection of products to buy.
> Attached to this Jira ticket you will find a zip archive containing a component named 'recommender', which implements the logic to generate Production Association recommendations. The component contains a short guide to its functionalities in the main folder. The guide also includes a short paragraph that explains how to run a recommender demo.
> I would really appreciate any review, feedback and suggestion by anyone interested in this topic.
> Thank you
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