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Jack Armstrong's user avatar
Jack Armstrong's user avatar
Jack Armstrong's user avatar
Jack Armstrong
  • Member for 9 years, 2 months
  • Last seen this week
6 votes
1 answer
5k views

Small dataset and optimal parameters for XGboost

5 votes
1 answer
12k views

Difference between GBTree and GBDart

4 votes
1 answer
2k views

OOB vs CV for Random Forest

3 votes
1 answer
532 views

Scaling Variables in PCA, yet all on the same scale

3 votes
1 answer
2k views

Setting up a Dickey Fuller Test

3 votes
1 answer
802 views

Dickey Fuller Test and checking Hypothesis Tests

2 votes
2 answers
1k views

Checking the Assumptions for T-tests?

2 votes
2 answers
924 views

Interpreting SPSS Cohen's Kappa output

2 votes
1 answer
4k views

How to Cluster with Non-normal data

2 votes
1 answer
167 views

Elastic Net Regression in R formula

2 votes
1 answer
1k views

Tuning for Naive Bayes

2 votes
1 answer
134 views

Categorical Variable and Logistic Regression

2 votes
2 answers
3k views

Do Neural Networks suffer from high bias or high variance

2 votes
1 answer
234 views

Interpreting RMSE and MAE

2 votes
0 answers
47 views

Finding Marginal Effects of Logistic Regression Coefficents

2 votes
1 answer
1k views

Decision trees and Feature Scaling for regularization

1 vote
1 answer
364 views

Identify Poisson or Exponential Distribution and determine lambda

1 vote
1 answer
1k views

The number of variables for each split declined significantly once increased the number of trees

1 vote
0 answers
90 views

Kaiser Criterion after Rotation

1 vote
1 answer
186 views

Cohen's Kappa in R versus SPSS

1 vote
2 answers
818 views

Test of Signficiance for Win Percentage

1 vote
1 answer
718 views

Determing whether to use NbClust or Information Criteron to find optimal number of clusters

0 votes
0 answers
21 views

Performing PCA on properly scaled data [duplicate]

0 votes
0 answers
552 views

Check if time series has drift or drift and trend [duplicate]

0 votes
0 answers
2k views

Interpreting Lagged First Differences Linear Regression Coefficents

0 votes
1 answer
991 views

Survival Regression with Cox, right censoring

0 votes
1 answer
276 views

Calculating Metropolis-Hastings algorithm correction term