1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
### README
#### Project name
marisa-trie
#### Project summary
MARISA: Matching Algorithm with Recursively Implemented StorAge
#### Latest version
0.2.6
#### Description
Matching Algorithm with Recursively Implemented StorAge (MARISA) is a static and space-efficient trie data structure. And libmarisa is a C++ library to provide an implementation of MARISA. Also, the package of libmarisa contains a set of command line tools for building and operating a MARISA-based dictionary.
A MARISA-based dictionary supports not only lookup but also reverse lookup, common prefix search and predictive search.
* Lookup is to check whether or not a given string exists in a dictionary.
* Reverse lookup is to restore a key from its ID.
* Common prefix search is to find keys from prefixes of a given string.
* Predictive search is to find keys starting with a given string.
The biggest advantage of libmarisa is that its dictionary size is considerably more compact than others. See below for the dictionary size of other implementations.
* Input
* Source: enwiki-20121101-all-titles-in-ns0.gz
* Contents: all page titles of English Wikipedia (Nov. 2012)
* Number of keys: 9,805,576
* Total size: 200,435,403 bytes (plain) / 54,933,690 bytes (gzipped)
|Implementation|Size (bytes)|Remarks |
|:-------------|-----------:|--------------------------:|
|darts-clone | 376,613,888|Compacted double-array trie|
|tx-trie | 127,727,058|LOUDS-based trie |
|marisa-trie | 50,753,560|MARISA trie |
#### Documentation
* README (English): https://s-yata.github.io/marisa-trie/docs/readme.en.html
* README (Japanese): https://s-yata.github.io/marisa-trie/docs/readme.ja.html
#### Build instructions
You can get the latest version via `git clone`. Then, you can generate a `configure` script via `autoreconf -i`. After that, you can build and install libmarisa and its command line tools via `configure` and `make`. For details, see also documentation in `docs`.
```
$ git clone https://github.com/s-yata/marisa-trie.git
$ cd marisa-trie
$ autoreconf -i
$ ./configure --enable-native-code
$ make
$ make install
```
#### Source code license
* The BSD 2-clause License
* The LGPL 2.1 or any later version
|
