Qbik

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visits	member for	1 year, 11 months
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21 Questions

votes activity newest

18	Is there any gold standard for modeling irregularly spaced time series?
6	How to incorporate costs (into logit model) of false positive, false negative, true positive, true negative if they are different costs?
3	How does extreme random forest differ from random forest?
3	What is distribution of $Z = X + Y$ where $X$ is Poisson distributed and $Y$ is normally distributed?
2	How to test for simultaneous equality of choosen coefficients in logit or probit model?

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262 Reputation

+10	How to test for simultaneous equality of choosen coefficients in logit or probit model?
+30	How to incorporate costs (into logit model) of false positive, false negative, true positive, true negative if they are different costs?
-2	How to transform correlation matrix into dissimilarity matrix for use in clustering?
+5	Is there any meta-approach for variable selection based of measures of similarity between each two variables?

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8 Answers

votes activity newest

2	Practical interpretation for $u_t = \log(x_t) - \log(x_{t-1})$
1	Correlating time stamps
1	kNN and unbalanced classes
1	For classification with Random Forests in R, how should one adjust for imbalanced class sizes?
0	High-Frequency Time-Series Forecast With A Lower Bound

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53 Tags

2 time-series × 3	1 k-nearest-neighbour × 3
1 clustering × 6	1 unbalanced-classes
1 r × 6	0 regression × 4
1 random-forest × 3	0 algorithms × 4
1 machine-learning × 3	0 logit × 3

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