This document summarizes information about a person named Takeshi Arabiki. It includes: 1. Their Twitter handle is @a_bicky and ID is id:a_bicky. 2. A link to their blog on Hatena is provided. 3. They have written books and slides about using R and SciPy. 4. Links are provided to their slideshare presentations about using Twitter and R.Read less
![Rデータフレーム自由自在](https://cdn-ak-scissors.b.st-hatena.com/image/square/da7dd9030f793ca0a4b617262f2bc87ede2986a2/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Frdataframemanupilation-111112012754-phpapp01-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)