Karteikarten
IntroBAI
Karten in diesem Stapel (10)
- 1What is Analytics?Finding the Trend and determine what it means to Business
- 2Elements of BAIBusiness context : Problems
Analytics : Insights for decision making
Technology : Computational Intensity - 3Why analytics - FlipKart?-Forecast demand for each SKU
-Predict customer cancellations and returns
-Predict which customer is likely to buy in future
-How to optimize delivery system? - 4what are 3 types of analytics?descriptive : data synthesis and visualization
predictive : predict future events
prescriptive : optimize decision making - 5framework for data-driven decision makingproblem identification:
Collection of relevant data
Data pre-processing
Model building
Communication of data analysis - 6what is big datahuge data that current technology cannot handle
- 7ways to define big datavolume : exabytes
velocity : sub-second
variety : 25+ formats
veracity : accuracy of data - 8Steps for Logistic regression1. Solve the classification problem
2. Binary : P(Y=1) = exp(z)/(1+exp(z)
z= beta-0 + beta1*x1 + beta2*x2 + .... - 9steps for Logistic regression3. use MLE : estimate Betas
4. validate models :
wald's test;
omnibus test - 10steps for Logistic regression5.how good model is :
classification table : sensitivity, specificity
Area under ROC
youden's method
ROC method
Informationen
- Beschreibung
- asd Business Analytics Karteikarten am IntroBAI, erstellt von Mukundhan Srinivasan am 28/03/2016.
- Erstellt von
- Mukundhan Srinivasan
- Aufrufe
- 3
- Bewertung