5 releases (3 breaking)
0.27.1 | Aug 25, 2023 |
---|---|
0.27.0 | Jul 10, 2023 |
0.26.0 | Jul 7, 2023 |
0.25.0 | May 25, 2023 |
0.24.0 | Apr 30, 2023 |
#968 in Text processing
471 downloads per month
Used in lindera-cli
585KB
14K
SLoC
Lindera
A morphological analysis library in Rust. This project fork from kuromoji-rs.
Lindera aims to build a library which is easy to install and provides concise APIs for various Rust applications.
The following products are required to build:
- Rust >= 1.46.0
Usage
Put the following in Cargo.toml:
[dependencies]
lindera_analyzer = { version = "0.24.0", features = ["ipadic", "ipadic-filter"] }
Basic example
This example covers the basic usage of Lindera Analysis Framework.
It will:
- Apply character filter for Unicode normalization (NFKC)
- Tokenize the input text with IPADIC
- Apply token filters for removing stop tags (Part-of-speech) and Japanese Katakana stem filter
use std::{fs, path::PathBuf};
use lindera_analyzer::analyzer::Analyzer;
use lindera_core::LinderaResult;
fn main() -> LinderaResult<()> {
let path = PathBuf::from(env!("CARGO_MANIFEST_DIR"))
.join("../resources")
.join("lindera_ipadic_conf.json");
let config_bytes = fs::read(path).unwrap();
let analyzer = Analyzer::from_slice(&config_bytes).unwrap();
let mut text = "Linderaは形態素解析エンジンです。ユーザー辞書も利用可能です。".to_string();
println!("text: {}", text);
// tokenize the text
let tokens = analyzer.analyze(&mut text)?;
// output the tokens
for token in tokens {
println!(
"token: {:?}, start: {:?}, end: {:?}, details: {:?}",
token.text,
token.byte_start,
token.byte_end,
token.details
);
}
Ok(())
}
The above example can be run as follows:
% cargo run --features=ipadic,ipadic-filter --example=analysis
You can see the result as follows:
text: Linderaは形態素解析エンジンです。ユーザー辞書も利用可能です。
token: Lindera, start: 0, end: 21, details: Some(["UNK"])
token: 形態素, start: 24, end: 33, details: Some(["名詞", "一般", "*", "*", "*", "*", "形態素", "ケイタイソ", "ケイタイソ"])
token: 解析, start: 33, end: 39, details: Some(["名詞", "サ変接続", "*", "*", "*", "*", "解析", "カイセキ", "カイセキ"])
token: エンジン, start: 39, end: 54, details: Some(["名詞", "一般", "*", "*", "*", "*", "エンジン", "エンジン", "エンジン"])
token: ユーザ, start: 0, end: 26, details: Some(["名詞", "一般", "*", "*", "*", "*", "ユーザー", "ユーザー", "ユーザー"])
token: 辞書, start: 26, end: 32, details: Some(["名詞", "一般", "*", "*", "*", "*", "辞書", "ジショ", "ジショ"])
token: 利用, start: 35, end: 41, details: Some(["名詞", "サ変接続", "*", "*", "*", "*", "利用", "リヨウ", "リヨー"])
token: 可能, start: 41, end: 47, details: Some(["名詞", "形容動詞語幹", "*", "*", "*", "*", "可能", "カノウ", "カノー"])
API reference
The API reference is available. Please see following URL:
Dependencies
~12–25MB
~343K SLoC