improved comments

about.go

@@ -3,7 +3,7 @@ package hyper
 // Package hyper allows fast approximate search of nearest
 // neighbour vectors in n-dimensional space.
 // Package functions discretize a vector and generate a set
-// of fuzzy hashes, as described in the following paper:
+// of fuzzy hashes, as described in the following document:
 // https://vitali-fedulov.github.io/algorithm-for-hashing-high-dimensional-float-vectors.html
 
 // A typical sequence of functions when using the package is:

hashes.go

@@ -6,7 +6,7 @@ import (
 	"hash/fnv"
 )
 
-// Hash64 can be any function of this kind.
+// Hash64 can be any function (user defined, for example).
 type Hash64 func(buckets []int) uint64
 
 // FVN1a is the default hash in this package.

hashes_test.go

@@ -10,7 +10,7 @@ func TestDefault(t *testing.T) {
 	hash := FVN1a(buckets)
 	want := uint64(13992349377752315208)
 	if hash != want {
-		t.Errorf(`Got %v, want %v`, hash, want)
+		t.Errorf(`Got %v, want %v.`, hash, want)
 	}
 }
 
@@ -27,6 +27,6 @@ func TestHashes64(t *testing.T) {
 		7065940388079601005,
 		13953051952027146823}
 	if !reflect.DeepEqual(hs, want) {
-		t.Errorf(`Got %v, want %v`, hs, want)
+		t.Errorf(`Got %v, want %v.`, hs, want)
 	}
 }

hypercubes.go

@@ -1,25 +1,19 @@
 package hyper
 
-// Params returns discretization parameters.
-// numBuckets represents number of discretization buckets into
-// which all values will fall. Ids of those buckets will be used
-// to create hashes.
-// min and max are minimum and maximum possible values
-// of discretized variable.
-// bucketWidth is width of the discretization bucket.
-// bucketPct is percentage of bucketWidth to allow for an error
-// of discretized variable (a specific value of a discretized
-// variable may fall into 2 buckets simultaneosly).
-// eps is actual width corresponding to the bucketWidth bucketPct
-// on the discretized variable axis.
+// Params helps with discretization parameters.
+// numBuckets is number of buckets per dimension.
+// min and max are value limits per dimension.
+// epsPercent is the uncertainty interval expressed as fraction
+// of bucketWidth.
+// eps is the absolute value of the uncertainty interval epsilon.
 func Params(
-	numBuckets int, min, max, bucketPct float64) (bucketWidth, eps float64) {
-	if bucketPct >= 0.5 {
-		panic(`Error: bucketPct must be less than 50%.
+	numBuckets int, min, max, epsPercent float64) (bucketWidth, eps float64) {
+	if epsPercent >= 0.5 {
+		panic(`Error: epsPercent must be less than 50%.
 			Recommendation: decrease numBuckets instead.`)
 	}
 	bucketWidth = (max - min) / float64(numBuckets)
-	eps = bucketPct * bucketWidth
+	eps = epsPercent * bucketWidth
 	return bucketWidth, eps
 }
 

hypercubes_test.go

@@ -10,10 +10,10 @@ func TestParams(t *testing.T) {
 	bucketWidth, eps := Params(numBuckets, min, max, bucketPct)
 	wantBucketWidth, wantEps := 25.5, 6.375
 	if bucketWidth != wantBucketWidth {
-		t.Errorf(`Got bucketWidth %v, want %v`, bucketWidth, wantBucketWidth)
+		t.Errorf(`Got bucketWidth %v, want %v.`, bucketWidth, wantBucketWidth)
 	}
 	if eps != wantEps {
-		t.Errorf(`Got eps %v, want %v`, eps, wantEps)
+		t.Errorf(`Got eps %v, want %v.`, eps, wantEps)
 	}
 }