otobrglez
/ jaccard_recommendation.rb
Last active
April 30, 2026 00:10
Simple recommendation system written in Ruby based on Jaccard index.
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| # Simple Recommendation Engine in Ruby | |
| # Visit: http://otobrglez.opalab.com | |
| # Author: Oto Brglez <otobrglez@gmail.com> | |
| class Book < Struct.new(:title) | |
| def words | |
| @words ||= self.title.gsub(/[a-zA-Z]{3,}/).map(&:downcase).uniq.sort | |
| end |
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| """Information Retrieval metrics | |
| Useful Resources: | |
| http://www.cs.utexas.edu/~mooney/ir-course/slides/Evaluation.ppt | |
| http://www.nii.ac.jp/TechReports/05-014E.pdf | |
| http://www.stanford.edu/class/cs276/handouts/EvaluationNew-handout-6-per.pdf | |
| http://hal.archives-ouvertes.fr/docs/00/72/67/60/PDF/07-busa-fekete.pdf | |
| Learning to Rank for Information Retrieval (Tie-Yan Liu) | |
| """ | |
| import numpy as np |
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