public List <SearchResult> Search(HashedSearchQuery search)
{
var minHasher = new MinHasher <Guid>(_db.LSHConfig.LSHHashSeed);
var lshSearcher = new LSHSearch <Guid>(minHasher, SimilarityMeasures.Jaccard);
var searchSpace = _db.HashedProducts
.ToDictionary(p => p.Id, p => (IWeightedHashed)p);
var res = lshSearcher.GetClosest(searchSpace, search.SearchTerm, search.MaxResults, search.MinimumSimilarity);
var results = res.Select(r =>
new SearchResult
{
Product = new ProductBase()
{
Id = r.Id
},
Similarity = r.Similarity,
Store = _db.HashedProducts
.Include(p => p.Store)
.FirstOrDefault(p => p.Id == r.Id).Store
}
).ToList();
return(results);
}
public void Setup()
{
minHasher = new MinHasher <int>(hashSeeds.Take(50).ToArray());
lshSearcher = new LSHSearch <int>(minHasher, SimilarityMeasures.Jaccard);
}
