chaos_kiyono https://blog.hatena.ne.jp/chaos_kiyono/ Ken-Chaos’s Random Notes on R https://chaos-r.hatenadiary.jp/ linear algebra time series analysis In recent years, statistical analysis and time-series analysis have become widely used as “tools” 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… 190 <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’s 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> https://cdn-ak.f.st-hatena.com/images/fotolife/c/chaos_kiyono/20260122/20260122142929.png Hatena Blog https://hatena.blog 2026-01-23 09:48:06 rich https://chaos-r.hatenadiary.jp/entry/2026/01/23/094806 1.0 100%