基于Apache Mahout框架实现的具有协同过滤功能的推荐系统源码+数据+项目操作说明.zip

# Recommender Systems for Last.fm ## Authors - Created by Andrés Segura Tinoco - Created on May 29, 2019 ## Program Description The program has 4 classes. Each of them is described below: File class: **LastfmRecommender.java** - Description: Program Main Class of Lastfm Recommender. - Main methods: - **main**: Input function of the main class. - **userRecommendation**: Function that makes the recommendation by users. - **itemRecommendation**: Function that makes the recommendation by items. - **getUserBasedItems**: Returns recommended items using User-based similarity methods. - **getItemBasedItems**: Returns recommended items using Item-based similarity methods. File class: **Utilities.java** - Description: This class contains static utility functions. - Main methods: - **createDataModel**: Function that create a data model if file exists. - **showItemList**: Show the list of recommended items in the console. - **saveItemList**: Save into a plain file the list of recommended items. - **showMessage**: Show an audit message in the console. File class: **LastfmValidation.java** - Description: Main class to calculate the accuracy of the models. - Main methods: - **main**: Input function of the main class. File class: **CFRecommenderBuilder.java** - Description: Collaborative Filtering Recommender builder. Classes container. - Main classes: - **UserJaccardRecommender**: Interface User-based Recommender with Jaccard similarity. - **UserCosineRecommender**: Interface User-based Recommender with Cosine similarity. - **UserPearsonRecommender**: Interface User-based Recommender with Pearson similarity. - **ItemJaccardRecommender**: Interface Item-based Recommender with Jaccard similarity. - **ItemCosineRecommender**: Interface Item-based Recommender with Cosine similarity. - **ItemPearsonRecommender**: Interface Item-based Recommender with Pearson similarity.