スーパーグローバル大学創成支援実証政治経済学拠点は、2023年1月30日と31日、ミラノ大学のLuigi Curini教授をお迎えし、特別ワークショップとセミナーを開催いたします。奮ってご参加ください。
概要
【発表者】 Luigi Curini教授（Professor of Political Science, Università degli Studi di Milano）
【言語】 英語
【対象】早稲田大学学部生、大学院生、教職員、一般 ※参加費無料
【登録】事前登録不要
【問合せ】日野 愛郎（[email protected]）
【主催】早稲田大学スーパーグローバル大学創成支援事業 実証政治経済学拠点
＜特別ワークショップ＞
【日時】１月30日（月）9:00-10:30/16:30−18:00
【場所】3号館903
【タイトル】A practical introduction to word embedding techniques – and why social scientists should be interested in them
【要旨】This seminar is divided in two parts. In the first one (held in 9:00-10:30 entitled “(Theory): Moving beyond the bag-of-words approach: Word Embeddings”), I will give an introduction to word embedding (WE) techniques, focusing in particular on GloVe (Global VEctors of words). The aim is a) to present the main ratio behind word embedding models; b) to explain why social scientists should care about them (as a method on their own for analyzing text as data – for example for studying word usage, meaning, stereotypes, but also as useful complements to other algorithms, such as machine learning algorithms, dictionaries, and so forth); and c) to give some advices to practitioners. The second part of the seminar (16:30-18:00 entitled “(Lab): How to implement Word Embeddings”) will offer a hands-on lab on how to fit a GloVe in R. A general knowledge of R (in particular of the Quanteda package) would be useful, as well as a general familiarity with machine learning algorithms.
＜セミナー＞
【日時】１月31日（火）16:30−18:00
【場所】3号館704
【タイトル】Covid Policy Diffusion among OECD Countries: when it happened, and when it did not
【要旨】To address the Covid pandemic, a set of unprecedented Non-Pharmaceutical Interventions were implemented across the world. We document patterns of policy diffusion across OECD countries in the period January 2020 to March 2022. By performing a diffusion analysis with spatially-weighted lags, we find evidence of a discernible association between policies adopted across OECD countries according in particular to their geographical proximity. Interestingly, we find that policy diffusion effects are stronger when other countries are, on average, increasing the stringency of the restrictions they adopt. Conversely, no statistically significant policy diffusion can be detected when other countries are relaxing their restriction. We suggest that this asymmetry, leading to biased diffusion, reflects political incentives linked, among other things, to the variance of the quality of governance across countries. We finally consider the implications of our findings.
