{"categories":["linear algebra","time series analysis"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fchaos-r.hatenadiary.jp%2Fentry%2F2026%2F01%2F23%2F094806\" title=\"Why Matrices Matter in Statistics and Time-Series Analysis (Part 1): The Role of Matrix Representations and Linear Algebra - Ken-Chaos\u2019s Random Notes on R\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","type":"rich","blog_url":"https://chaos-r.hatenadiary.jp/","title":"Why Matrices Matter in Statistics and Time-Series Analysis (Part 1): The Role of Matrix Representations and Linear Algebra","version":"1.0","description":"In recent years, statistical analysis and time-series analysis have become widely used as \u201ctools\u201d across many fields. At the same time, I also feel that an increasing number of students and practitioners are using such methods without sufficiently understanding what kinds of structures they assume a\u2026","width":"100%","blog_title":"Ken-Chaos\u2019s Random Notes on R","author_url":"https://blog.hatena.ne.jp/chaos_kiyono/","url":"https://chaos-r.hatenadiary.jp/entry/2026/01/23/094806","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/c/chaos_kiyono/20260122/20260122142929.png","height":"190","author_name":"chaos_kiyono","published":"2026-01-23 09:48:06","provider_name":"Hatena Blog"}