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The Ultimate Guide to Top Local Business Directories for Boosting Visibility in 2024
Local business directories are the lifeblood of online visibility for businesses today. They not only help drive organic traffic but also bolster your SEO, boost
Ten Years Later, a Political Exile Returns to a Syria in Transition
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Natalie ‘Samantha’ Rupnow, the 15-year-old who killed a student and teacher in Wisconsin, was brand-new at the school but raised no red flags
The school was working with her family on attendance, but teachers had no significant concerns. Read More Source link
Fearing another travel ban, universities and colleges are urging international students to return to campus before Trump is inaugurated
Trump issued an executive order in January 2017 banning travel to the U.S. by citizens of seven predominantly Muslim countries. Read More Source link
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Bitcoin dips to $92K in 'optimal dip-buying' move as PCE boosts crypto
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BMW has been testing an electric M2 since 2018
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Italy's data regulator fines OpenAI €15M after its probe found that the startup processed users' personal data to train ChatGPT without an adequate legal basis (Reuters)
Reuters: Italy’s data regulator fines OpenAI €15M after its probe found that the startup processed users’ personal data to train ChatGPT without an adequate legal
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Instagram hashtags are a powerful tool when it comes to discoverability, finding your audience, and increasing your reach on the platform. Knowing which hashtags to
時間依存性治療(Time-varying treatments)の因果推論:周辺構造モデルにおけるIPTW法 – SAS Japan
注) 本コラムは『経時的に変化する治療(Time-varying treatments)に対する因果推論』と題した以前のコラムを、時間依存性治療に関する部分と周辺構造モデルにおけるIPTW法に関する部分に分割し、内容の追加と修正を行い再構成したものの一部となります。 以前のコラムでは、「時間依存性治療とはなにか」、「時間依存性治療の因果効果はどのように定義されるのか」、「定義した因果効果はどう推定すれば良いか」について紹介しました。時間依存性治療の因果効果の推定にあたっては、一般に条件付けに基づく手法(e.g., 回帰、層別化、マッチング)は不適であり、g-methods※1と総称される推定手法が広く用いられています。本コラムでは、それらの中でも直感的な理解や実装が最も容易である「周辺構造モデルにおけるIPTW法(inverse probability of treatment weighting (IPTW) of marginal structural models (MSMs)」の理論とSASでの実装方法について簡単に紹介します。コラム全体の流れは以下の通りです。 時間固定性治療(time-fixed treatments)※2に対する周辺構造モデルとIPTW法の紹介 IPTW法の概要 周辺構造モデルの設定がなぜ必要か 時間依存性治療(time-varying treatments)に対する周辺構造モデルとIPTW法の紹介 SASでの実装 まとめ なお、本コラムは統計的因果推論に関する基本的な理解があることを前提としております。また、文献や書籍によっては、IPTW(Inverse probability