Análise de sentimento do COPOM com R (parte 1: usando a base de dados)

Inspirado no artigo “Quando as palavras contam a história”, do Terraço Econômico, resolvi elaborar minha própria implementação do método, contribuindo para a comunidade. Vou mostrar então como eu fiz em alguns posts dessa série:

  1. Usando a base de dados
  2. Replicando a base de dados
  3. Analisando o sentimento

Resolvi começar pelo final, divulgando a base de dados já pronta, para que os colegas possam já começar a criar suas próprias análise, nuvem de termos, contagem de palavras, etc.

Continuar lendo

Extractivism and the Anatomy of AI

Sobre recursos naturais do mundo conectado.

Kevin's Blog

I found this fascinating website – the Anatomy of an AI System – which takes an Amazon Echo and attempts to map out the behind the scenes costs in terms of manual labour, material resources, and data required to power the ecosystem.

It is particularly telling how much it focuses on the raw material impact of our modern lifestyles, which when all said and done is not unique to the Echo, but a symptom of our continued fascination with electronic gadgetry in its totality.  It has a word, that was new to me, for the way much of the impact is continually hidden from end consumers by large companies – extractivism – and attempts to bring to the fore the continued extractivism going on in support of the huge technology base being created (and in some cases just as quickly obsoleted) by large technology companies.

It uses as one example,

Ver o post original 508 mais palavras

ARQUIVO: OCDE vs. Peer Review

Nosso método de divulgação já está ultrapassado.

Peer review has its place. But peer reviewers have blind spots. If you want to really review a paper, you need peer reviewers who can tell you if you’re missing something within the literature—and you need outside reviewers who can rescue you from groupthink. If you’re writing a paper on himmicanes and hurricanes, you want a peer reviewer who can connect you to other literature on psychological biases, and you also want an outside reviewer—someone without a personal and intellectual stake in you being right—who can point out all the flaws in your analysis and can maybe talk you out of trying to publish it.

Fonte: When does peer review make no damn sense? – Statistical Modeling, Causal Inference, and Social Science

80 Economic Bestsellers before 1850: A Fresh Look at the History of Economic Thought

Lista interessante de livros clássicos de economia, famosos no seu tempo (antes de 1850), mas negligenciados hoje.

Developing Economics

This new Working Paper studies the economics books which – judged by the number of editions – were the most influential between 1500 and 1849, and compares these to what is represented in accounts of the history of economic thought today. The most interesting outcome of this work is that if we assume some degree of correlation between the influence of a text and the number of editions published, the publication history we present here suggests that some authors who were once influential are now being neglected.

Ver o post original 3.410 mais palavras

ARQUIVO: Hierarquia de Necessidades: Nain vs Marlow (2013)

Nessa época eu estava interessado em achar uma nova forma de representar a demanda por bens, sem usar as elasticidades.

This article gives reasons as to why Maslow’s & ERG Theory of Needs is inaccurate. It also gives reasons why the same is inaccurate in an organizational perspective. The author also gives a alternative model of needs, namely the Nain Model, which is particularly applicable in an organizational perspective. This article has been written for those interested in Organizational Behaviour.

via Nain’s Hierarchy of Needs: An Alternative to Maslow’s & ERG’s Hierarchy of Needs – Munich Personal RePEc Archive.

ARQUIVO: O que sabemos sobre organização das firmas (2013)

Artigo interessante e antigo do vox sobre caixas pretas, ambiente determinando design (evolução ou ECD?), focado em política de comérico externo.

Increasingly, people are pointing the finger of blame for economic woe at large firms. This column argues that organisation design is often affected by government trade policy. If firm organisation design has implications for consumer welfare in terms of prices and quality of product, evidence suggests that governments should make sure that in future, trade policy and corporate governance policy are more complementary.

via Firm organisation: What we know and why we should care | vox.