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General Technical Questions (125)
| Discussions | Replies | Latest Activity |
|---|---|---|
 Computation of Weight of Evidence when either the number of bads or goods in a class of a variable is 0Hi All! I want to understand the ways in which Weight of Evidence (WoE) is computed or adjusted in the following scenarios: 1. When numbe… Started by Sharath Dandamudi |
3 |
Dec 11, 2012 Reply by kiran chapidi |
 Weight statement and oversampling or undersamplingI need an understanding of the usage of Weight statement. Background - I had to build a logistic regression response model on rare event… Started by RockyRambo |
2 |
Oct 25, 2012 Reply by RockyRambo |
WOE v/s using continuous variables as suchWhat are the advantages/disadvantages of using WOE approach viz-a-viz. using continuous variables in their original form..For e.g. Making b… Started by RockyRambo |
2 |
Oct 24, 2012 Reply by RockyRambo |
Hadoop and Data MiningHadoop and Big Data are buzzwords these days. How does it affect data mining workers? Should it be completely transparent for people only u… Started by Jason Monte |
4 |
Aug 15, 2012 Reply by Ingo Mierswa |
 How do you estimate the proportion of bogus accounts on Facebook?Facebook has 800MM users. Out of these 800MM "users", how many are duplicate (or triplicate), fake, dummy, inactive, decoy, stolen IDs, non… Started by Capri |
11 |
Jul 24, 2012 Reply by Lynne Mysliwiec |
How To Determine If A Sample Is RepresentativeIf the sample is obtained through simple random sampling, would it be automatically representative of the population? If not, what is the w… Started by Jason Monte |
5 |
Jul 24, 2012 Reply by Lynne Mysliwiec |
Independent variables need to be normally distributed in multiple regression?Below is a quote regarding logistic regression. It seems it is saying OLS regression requires independent variables to be normally distribu… Started by Jason Monte |
5 |
Jul 20, 2012 Reply by Sean Flanigan |
 How are database joins optimized? How can you do better to handle big data?Joins are typically Cartesian products and in many database systems, can be very slow. What are the best solutions to optimize joins From… Started by Vincent Granville |
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Jul 15, 2012 Reply by Ralph Winters |
How do your quantify data as large, big, or huge?How big your data is depends on the quantity of information that it contains (measured using entropy metrics), rather than the number of te… Started by Vincent Granville |
4 |
Jul 1, 2012 Reply by Rex Pruitt |
Weekly Seasonal Adjustment factors for Annualized Sales?I know that for a monthly series of data, there are 2 well known programs that are free and reliable enough to use:1) TRAMO-SEATS2) X-12 A… Started by Dane Sorensen |
1 |
Jun 12, 2012 Reply by Dane Sorensen |
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