
Revisão AV2 - Machine Learning
Authored by Samara Souza
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22 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na matriz de confusão de um modelo de classificação binária, onde são representados os verdadeiros negativos (TN)?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que a soma dos elementos de uma linha na matriz de confusão representa?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a principal função de uma matriz de confusão em avaliação de modelos de classificação?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como a acurácia é calculada em um problema de classificação binária?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Em um problema de classificação com três classes, como a acurácia é calculada?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Em um cenário onde as classes estão desbalanceadas, por que a acurácia pode não ser uma métrica ideal para avaliar o desempenho do modelo?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se um modelo de classificação tem uma acurácia de 90%, o que isso significa em termos percentuais de erro?
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