前編はこちら 第4章: 形態要素解析 前編に加え、グラフ表示用にgnuplotを用いております。 36. 単語の出現頻度 文章中に出現する単語とその出現頻度を求め,出現頻度の高い順に並べよ. まず、単語の出現頻度を求めるための関数です。 pub fn appearence(data: &Vec<Vec<HashMap<String, String>>>) -> HashMap<String, usize> { let mut appearence = HashMap::new(); data.iter() .for_each(|sentence| { sentence.into_iter().for_each(|elements| { *appearence.entry(elements["surface"].clone()).or_insert(0) += 1; }) }); appea
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