neologd
いい形態素解析用の辞書
neologd/mecab-ipadic-neologd: Neologism dictionary based on the language resources on the Web for mecab-ipadic
週2回更新される、cronで自動アップデート可能
$ brew install mecab mecab-ipadic git curl xz
$ git clone --depth 1
https://github.com/neologd/mecab-ipadic-neologd.git
$ mecab -d build/mecab-ipadic-2.7.0-20070801-neologd-20180920/