ANÁLISE DA POSSIBILIDADE DE RIVALIDADE NO MERCADO BANCÁRIO BRASILEIRO ENTRE 2000-2012
Bibliographic record
Abstract
A crise financeira mundial de 2008 alterou a arquitetura do setor bancário brasileiro através de grandes fusões e aquisições, que proporcionaram um aumento da concentração. Essa mudança causa preocupação sobre os níveis de concorrência do setor. A metodologia abordada envolve a análise da parcela de mercado apropriada pelos cinco maiores bancos no período e a sua oscilação. Associa, portanto, através de testes de raiz unitária, a instabilidade das séries temporais de market shares à possibilidade de rivalidade e de exercício de poder de mercado. Pode-se dizer que para o mercado de depósito total existe possível rivalidade para os bancos estudados, o que reduz a possibilidade do exercício de poder de mercado devido a um aumento da concentração.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.003 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.047 | 0.026 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".