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1 parent 28194d6 commit ff28adfb155d2f85a87203feae4a92ec28efd7af @lemire lemire committed Feb 10, 2012
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@@ -1,10 +1,12 @@
CSharpEWAH
-(c) Kemal Erdogan and Daniel Lemire,
-
+(c) 2012 Kemal Erdogan and Daniel Lemire,
+This code is licensed under the Apache
+License, Version 2.0 (ASL2.0)
This is a word-aligned compressed variant of
the Java Bitset class. It uses a 64-bit RLE-like
-compression scheme.
+compression scheme. It can be used to implement
+bitmap indexes.
The goal of word-aligned compression is not to
achieve the best compression, but rather to
@@ -15,16 +17,15 @@ is always more efficient storage-wise than an
uncompressed bitmap (as implemented in the java
BitSet class by Sun).
-Among other possible open source licenses, this
-code is licensed under Apache License, Version 2.0 (ASL2.0).
-For more details, see the following paper:
+For more details regarding the compressed format, see Section 3
+of the following paper:
Daniel Lemire, Owen Kaser, Kamel Aouiche, Sorting improves word-aligned bitmap indexes.
Data & Knowledge Engineering 69 (1), pages 3-28, 2010.
http://arxiv.org/abs/0901.3751
-
+(The PDF file is freely available on the arXiv site.)
Note: This is a port of JavaEWAH from Java
to C# by Kemal Erdogan.
@@ -57,4 +58,4 @@ This will run unit tests.
See example.cs.
-
+
@@ -1,7 +1,7 @@
namespace Ewah
{
/*
- * Copyright 2009-2012, Daniel Lemire
+ * Copyright 2012, Kemal Erdogan and Daniel Lemire
* Licensed under APL 2.0.
*/
@@ -7,7 +7,7 @@
namespace Ewah
{
/*
- * Copyright 2009-2012, Daniel Lemire
+ * Copyright 2012, Kemal Erdogan and Daniel Lemire
* Licensed under APL 2.0.
*/
@@ -1,7 +1,7 @@
namespace Ewah
{
/*
- * Copyright 2009-2012, Daniel Lemire
+ * Copyright 2012, Kemal Erdogan and Daniel Lemire
* Licensed under APL 2.0.
*/
@@ -1,7 +1,7 @@
namespace Ewah
{
/*
- * Copyright 2009-2012, Daniel Lemire
+ * Copyright 2012, Kemal Erdogan and Daniel Lemire
* Licensed under APL 2.0.
*/
@@ -8,7 +8,7 @@
namespace Ewah
{
/*
- * Copyright 2009-2012, Daniel Lemire
+ * Copyright 2012, Kemal Erdogan and Daniel Lemire
* Licensed under APL 2.0.
*/
public static class Ext

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