Examples with ImproveSlopeOne com.recommender.ImproveSlopeOne used on opensource projects

Example 1 with ImproveSlopeOne

use of com.recommender.ImproveSlopeOne in project Movie by batsqd.

the class MovieController method getRecommendedMoviesByOurAlgorithm.

/////////////////////////////////////////////////////
@RequestMapping("getRecommendedMoviesByOurAlgorithm.action")
public ModelAndView getRecommendedMoviesByOurAlgorithm(HttpSession session) throws Exception {
    User user = (User) session.getAttribute("user");
    int user_id = user.getUserid();
    int recommend_movie_num = Configs.recommend_movie_num;
    ApplicationContext ac = ApplicationContextUtil.getApplicationContext();
    WatchMovieMapper watchMovieMapper = (WatchMovieMapper) ac.getBean("watchMovieMapper");
    int numsOfRatedMoviesByUserId = watchMovieMapper.numsOfRatedMoviesByUserId(user_id);
    ModelAndView modelAndView = new ModelAndView();
    if (numsOfRatedMoviesByUserId < 5) {
        modelAndView.addObject("numsOfRatedMoviesByUserId", numsOfRatedMoviesByUserId);
        modelAndView.setViewName("/WEB-INF/jsp/guessYouLike.jsp");
        return modelAndView;
    } else {
        //超过5人评价，才做预测
        ImproveSlopeOne improveSlopeOne = new ImproveSlopeOne();
        List<RecommendedMovie> recommendedMovieslist = improveSlopeOne.getPredictMovies(user_id, recommend_movie_num);
        //System.out.println("=========================================");
        //System.out.println("推荐电影的数量："+recommendedMovieslist.size());
        //System.out.println(recommendedMovieslist.toString());
        //System.out.println("==========================================");
        MovieMapper movieMapper = (MovieMapper) ac.getBean("movieMapper");
        RecommendMapper recommendMapper = (RecommendMapper) ac.getBean("recommendMapper");
        ArrayList<Movie> moviesList = new ArrayList<Movie>();
        for (int i = 0; i < recommendedMovieslist.size(); i++) {
            double movie_recommend_value = recommendedMovieslist.get(i).getRecommend_vale();
            int recommendedMovie_id = recommendedMovieslist.get(i).getMovie_id();
            HashMap<String, Object> parameter = new HashMap<String, Object>();
            parameter.put("movie_id", recommendedMovie_id);
            parameter.put("user_id", user_id);
            parameter.put("recommend_value", movie_recommend_value);
            //最好处理下异常
            //只是保存user_id movie_id recommend_value timestamp
            recommendMapper.saveRecommendedMovies(parameter);
            Movie movie = movieMapper.selectMovieById(recommendedMovie_id);
            if (movie != null) {
                moviesList.add(movie);
            }
        }
        modelAndView.addObject("moviesList", moviesList);
        modelAndView.setViewName("/WEB-INF/jsp/guessYouLike.jsp");
        return modelAndView;
    }
}

Example 2 with ImproveSlopeOne

use of com.recommender.ImproveSlopeOne in project Movie by batsqd.

the class TestImprovedSlopOne method main.

public static void main(String[] args) {
    // TODO Auto-generated method stub
    ImproveSlopeOne improveSlopeOne = new ImproveSlopeOne();
    List<RecommendedMovie> list = improveSlopeOne.getPredictMovies(1, 5);
    for (int i = 0; i < list.size(); i++) {
        System.out.println("movie_id:" + list.get(i).getMovie_id() + " recommended_value:" + list.get(i).getRecommend_vale());
    }
    System.out.println("=========list=============");
    System.out.println(list.size());
    System.out.println("=========list=============");
}