//public readonly double LogicalScore;
public ProductLink(Engine engine, Product[] product1s, Product[] product2s)
{
this.Engine = engine;
Product1s = product1s;
Product2s = product2s;
MutualCompanyIds = (from p1 in product1s join p2 in product2s on p1.DbProduct.CompanyId equals p2.DbProduct.CompanyId where p1 != null && p2 != null select p1.DbProduct.CompanyId).ToList();
if (MutualCompanyIds.Count > 0)
{
MutualProductIds = (from p1 in product1s join p2 in product2s on p1.DbProduct.Id equals p2.DbProduct.Id where p1 != null && p2 != null select p1.DbProduct.Id).ToList();
if (MutualProductIds.Count < MutualCompanyIds.Count)//chains contain different products of the same company so cannot be linked
Score = -1.1;
else //chains contain the same products so should be considered linked
Score = 1.1;
return;
}
foreach (Product product1 in Product1s)
foreach (Product product2 in Product2s)
Set(product1.DbProduct.Id, product2.DbProduct.Id, new ProductPair(engine, product1, product2));
//word order
//word density
CategoryScore = (double)product1_id_product2_id_s2ProductPair.Values.Select(x => x.CategoryScore).Sum() / product1_id_product2_id_s2ProductPair.Count;
NameScore = (double)product1_id_product2_id_s2ProductPair.Values.Select(x => x.NameScore).Sum() / product1_id_product2_id_s2ProductPair.Count;
Score = 0.6 * CategoryScore + 0.4 * NameScore;
}
internal Product(Engine engine, Fhr.ProductOffice.Models.Product product)
{
this.engine = engine;
if (product == null)
throw new Exception("product is null");
DbProduct = product;
}
internal Company(Engine engine, Fhr.ProductOffice.Models.Company company)
{
this.engine = engine;
DbCompany = company;
List<string> categories = engine.Db.Products.Where(p => p.CompanyId == company.Id).GroupBy(p => p.Category).Select(c => c.Key).ToList();
this.categories = new HashSet<string>(categories);
initialize_settings();
}
public ProductPair(Engine engine, Product product1, Product product2)
{
this.engine = engine;
{
CategoryScore = engine.CompanyPairs.GetCategoryComparisonScore(product1, product2);
}
{
Dictionary<string, double> word2name_score = new Dictionary<string, double>();
foreach (string word in product1.Words(Field.Name))
{
if (product2.Words2Count(Field.Name).ContainsKey(word))
word2name_score[word] = .5 * engine.Companies.Get(product1.DbProduct.CompanyId).WordWeight(Field.Name, word)
+ .5 * engine.Companies.Get(product2.DbProduct.CompanyId).WordWeight(Field.Name, word);
}
//MatchedWords[Field.Name] = word2name_score.Keys.ToList();
if (word2name_score.Count > 0)
{
NameScore = .5 * ((double)word2name_score.Values.Sum() / word2name_score.Count)
+ .25 * ((double)word2name_score.Count / product1.Words(Field.Name).Count)
+ .25 * ((double)word2name_score.Count / product2.Words(Field.Name).Count);
}
}
// decimal p1 = product1.DbProduct.Price;
//HashSet<string> matched_words = new HashSet<string>();
//foreach (string word in product1.Words(Field.Description))
//{
// if (product2.Word2Count(Field.Description).ContainsKey(word))
// matched_words.Add(word);
//}
//foreach (string word in matched_words)
//{
// double score = get_word_score(word, product1, product2);
// SecondaryScore += score;
//}
}
internal CompanyPairs(Engine engine)
{
this.engine = engine;
}
internal Companies(Engine engine)
{
this.engine = engine;
}
internal Products(Engine engine)
{
this.engine = engine;
}