SearchIndex CreateStorageIndex()

in demo-dotnet/QuantizationAndStorageOptions/Program.cs [91:159]

• 65 lines of code
• 4 McCabe index (conditional complexity)

SearchIndex CreateStorageIndex(string indexName, bool useFloat16, bool noStored, bool useQuantization) 
{
    const string vectorSearchHnswProfile = "my-vector-profile";
    const string vectorSearchHnswConfig = "myHnsw";
    const int modelDimensions = 3072;

    SearchFieldDataType dataType;
    if(useFloat16)
    {
        dataType = SearchFieldDataType.Collection(SearchFieldDataType.Half);
    }
    else
    {
        dataType = SearchFieldDataType.Collection(SearchFieldDataType.Single);
    }

    SearchIndex searchIndex = new(indexName)
    {
        VectorSearch = new()
        {
            Profiles =
            {
                new VectorSearchProfile(vectorSearchHnswProfile, vectorSearchHnswConfig)
                {
                    CompressionConfigurationName = useQuantization ? "my-compression" : null
                }
            },
            Algorithms =
            {
                new HnswAlgorithmConfiguration(vectorSearchHnswConfig),
            }
        },
        SemanticSearch = new()
        {
            Configurations =
            {
                new SemanticConfiguration("semantic-config", new()
                {
                    TitleField = new SemanticField(fieldName: "title"),
                    ContentFields =
                    {
                        new SemanticField(fieldName: "chunk")
                    },
                })
            },
        },
        Fields =
        {
            new SearchableField("id") { IsKey = true, IsFilterable = true, IsSortable = true },
            new SearchableField("title"),
            new SearchableField("chunk"),
            new SearchField("embedding", dataType)
            {
                IsSearchable = true,
                IsHidden = noStored,
                IsStored = !noStored,
                VectorSearchDimensions = modelDimensions,
                VectorSearchProfileName = vectorSearchHnswProfile
            }
        },
    };

    if (useQuantization)
    {
        searchIndex.VectorSearch.Compressions.Add(new ScalarQuantizationCompressionConfiguration("my-compression"));
    }

    return searchIndex;
}