Benchmarking: Added utility functions for VPTree/KNN

2 files changed, 127 insertions, 4 deletions

diff --git a/benchmarks/include/bench_utility.h b/benchmarks/include/bench_utility.h
index cc926a3..a1a2773 100644
--- a/benchmarks/include/bench_utility.h
+++ b/benchmarks/include/bench_utility.h
@@ -15,6 +15,7 @@
 #include "shard/TrieSpline.h"
 #include "shard/WIRS.h"
 #include "ds/BTree.h"
+#include "shard/VPTree.h"
 
 #include <cstdlib>
 #include <cstdio>
@@ -37,11 +38,14 @@ typedef uint64_t weight_type;
 typedef de::WeightedRecord<key_type, value_type, weight_type> WRec;
 typedef de::Record<key_type, value_type> Rec;
 
+typedef de::Point<double, 300> Word2VecRec;
+
 typedef de::DynamicExtension<WRec, de::WSS<WRec>, de::WSSQuery<WRec>> ExtendedWSS;
 typedef de::DynamicExtension<Rec, de::TrieSpline<Rec>, de::TrieSplineRangeQuery<Rec>> ExtendedTSRQ;
 typedef de::DynamicExtension<Rec, de::PGM<Rec>, de::PGMRangeQuery<Rec>> ExtendedPGMRQ;
 typedef de::DynamicExtension<Rec, de::MemISAM<Rec>, de::IRSQuery<Rec>> ExtendedISAM_IRS;
 typedef de::DynamicExtension<Rec, de::MemISAM<Rec>, de::ISAMRangeQuery<Rec>> ExtendedISAM_RQ;
+typedef de::DynamicExtension<Word2VecRec, de::VPTree<Word2VecRec>, de::KNNQuery<Word2VecRec>> ExtendedVPTree_KNN;
 
 struct btree_record {
     key_type key;
@@ -140,6 +144,55 @@ static std::vector<QP> read_range_queries(std::string fname, double selectivity)
     return queries;
 }
 
+template <typename QP>
+static std::vector<QP> read_knn_queries(std::string fname, size_t k) {
+    std::vector<QP> queries;
+
+    FILE *qf = fopen(fname.c_str(), "r");
+    char *line = NULL;
+    size_t len = 0;
+
+    while (getline(&line, &len, qf) > 0) {
+        char *token;
+        QP query;
+        size_t idx = 0;
+
+        token = strtok(line, " ");
+        do {
+            query.point.data[idx++] = atof(token);
+        } while ((token = strtok(NULL, " ")));
+
+        query.k = k;
+        queries.emplace_back(query);
+    }
+
+    free(line);
+    fclose(qf);
+
+    return queries;
+}
+
+static bool next_vector_record(std::fstream &file, Word2VecRec &record, bool binary=false) {
+    std::string line;
+    if (std::getline(file, line, '\n')) {
+        std::stringstream line_stream(line);
+        for (size_t i=0; i<300; i++) {
+            std::string dimension;
+
+            std::getline(line_stream, dimension, ' ');
+            record.data[i] = atof(dimension.c_str());
+        }
+
+        g_reccnt++;
+
+        return true;
+    }
+
+    return false;
+
+}
+
+
 template <de::KVPInterface R>
 static bool next_record(std::fstream &file, R &record, bool binary=false)
 {
@@ -205,12 +258,22 @@ static bool build_insert_vec(std::fstream &file, std::vector<R> &vec, size_t n,
     vec.clear();
     for (size_t i=0; i<n; i++) {
         R rec;
-        if (!next_record(file, rec, binary)) {
-            if (i == 0) {
-                return false;
+        if constexpr (std::is_same_v<R, Word2VecRec>) {
+            if (!next_vector_record(file, rec)) {
+                if (i == 0) {
+                    return false;
+                }
+
+                break;
             }
+        } else {
+            if (!next_record(file, rec, binary)) {
+                if (i == 0) {
+                    return false;
+                }
 
-            break;
+                break;
+            }
         }
 
         vec.emplace_back(rec);
diff --git a/benchmarks/vptree_knn_bench.cpp b/benchmarks/vptree_knn_bench.cpp
new file mode 100644
index 0000000..1655209
--- /dev/null
+++ b/benchmarks/vptree_knn_bench.cpp
@@ -0,0 +1,60 @@
+#include "include/bench.h"
+
+int main(int argc, char **argv)
+{
+    if (argc < 5) {
+        fprintf(stderr, "Usage: vptree_knn_bench <filename> <record_count> <delete_proportion> <query_file>\n");
+        exit(EXIT_FAILURE);
+    }
+
+    std::string filename = std::string(argv[1]);
+    size_t record_count = atol(argv[2]);
+    double delete_prop = atof(argv[3]);
+    std::string qfilename = std::string(argv[4]);
+
+    size_t buffer_cap = 12000;
+    size_t scale_factor = 6;
+    double max_delete_prop = delete_prop;
+
+    double insert_batch = 0.1; 
+
+    init_bench_env(record_count, true);
+    auto queries = read_knn_queries<de::KNNQueryParms<Word2VecRec>>(qfilename, 50);
+
+    auto de_vp_knn = ExtendedVPTree_KNN(buffer_cap, scale_factor, max_delete_prop);
+
+    std::fstream datafile;
+    datafile.open(filename, std::ios::in | std::ios::binary);
+
+    std::vector<Word2VecRec> to_delete;
+
+    // warm up the tree with initial_insertions number of initially inserted
+    // records
+    size_t warmup_cnt = insert_batch * record_count;
+    warmup<ExtendedVPTree_KNN, Word2VecRec>(datafile, de_vp_knn, warmup_cnt, delete_prop, to_delete, true, true);
+
+    size_t insert_cnt = record_count - warmup_cnt;
+
+    insert_tput_bench<ExtendedVPTree_KNN, Word2VecRec>(de_vp_knn, datafile, insert_cnt, delete_prop, to_delete, true);
+    fprintf(stdout, "%ld\t", de_vp_knn.get_memory_usage());
+/*
+    query_latency_bench<ExtendedVPTree_KNN, Word2VecRec, de::KNNQueryParms<Word2VecRec>>(de_vp_knn, queries);
+    fprintf(stdout, "\n");
+
+    auto ts = de_vp_knn.create_static_structure();
+
+    fprintf(stdout, "%ld\t", ts->get_memory_usage());
+    static_latency_bench<de::VPTree<Word2VecRec>, Word2VecRec, de::KNNQueryParms<Word2VecRec>, de::KNNQuery<Word2VecRec>>(
+        ts, queries, 1
+    );
+    fprintf(stdout, "\n");
+
+    delete ts;
+    */
+
+    delete_bench_env();
+    fflush(stdout);
+    fflush(stderr);
+
+    exit(EXIT_SUCCESS);
+}