public IDictionary <string, double> CalculatePopularPosts(PopularPostsDTO popularPostsDTO, int maxPosts)
{
IDictionary <string, double> postsProbability = new Dictionary <string, double>();
if (maxPosts <= 0)
{
return(postsProbability);
}
PostStatisticsDTO[] postStatisticsDTOs = popularPostsDTO.PostsStatistics;
int allViews = postStatisticsDTOs.Sum(postStatistics => postStatistics.Views);
int allConversion = postStatisticsDTOs.Sum(postStatistics => postStatistics.Conversions);
double allReadTime = postStatisticsDTOs.Sum(postStatistics => postStatistics.ReadTime);
foreach (PostStatisticsDTO postStatitsticDTO in postStatisticsDTOs)
{
double postProbability = CalculatePostProbability(
allViews,
allConversion,
allReadTime,
postStatitsticDTO
);
postsProbability.Add(postStatitsticDTO.PostId, postProbability);
}
return(GetResultProbability(postsProbability, maxPosts));
}
public void TestResultOnePost()
{
PopularPostsDTO popularPostsDTO = new PopularPostsDTO();
popularPostsDTO.PostsStatistics = GetFullDataPostStatisticsDTOs();
IDictionary <string, double> result = calculatePopularPostsService.CalculatePopularPosts(popularPostsDTO, 1);
Assert.Equal(0.4816487859966121, result.First().Value);
Assert.Equal(HIGH_PROBABILITY_POST_ID, result.First().Key);
}
public void TestZeroReadTime()
{
PopularPostsDTO popularPostsDTO = new PopularPostsDTO();
popularPostsDTO.PostsStatistics = GetCustomDataPostStatisticsDTOs(1000, 250, 0);
IDictionary <string, double> result = calculatePopularPostsService.CalculatePopularPosts(popularPostsDTO, 2);
Assert.Equal(0, result.First().Value);
Assert.Equal(CUSTOM_POST_ID_1, result.First().Key);
Assert.Equal(0, result.Last().Value);
Assert.Equal(CUSTOM_POST_ID_2, result.Last().Key);
}
public void TestOnePopularPostStatistics()
{
string postId = "single";
Random random = new Random();
PostStatisticsDTO postStatisticsDTO = new PostStatisticsDTO();
postStatisticsDTO.PostId = postId;
postStatisticsDTO.Views = random.Next(1, 100000);
postStatisticsDTO.Conversions = random.Next(1, 100000);
postStatisticsDTO.ReadTime = (double)random.Next(1, 100000);
PostStatisticsDTO[] postsStatistics = { postStatisticsDTO };
PopularPostsDTO popularPostsDTO = new PopularPostsDTO();
popularPostsDTO.PostsStatistics = postsStatistics;
IDictionary <string, double> result = calculatePopularPostsService.CalculatePopularPosts(popularPostsDTO, 1);
Assert.Equal(0.7333333333333334, result.First().Value);
Assert.Equal(postId, result.First().Key);
}
public JsonResult Calculate([FromBody] PopularPostsDTO popularPostsDTO, int maxPosts)
{
return(Json(calculateSimilarPostsService.CalculatePopularPosts(popularPostsDTO, maxPosts)));
}
