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How PNR accuracy percentage calculation works ?  
1 Answers
Nov 01 2012 (22:11)

Entry# 1336     
सचिन शर्मा سچن شرما*^~
How PNR accuracy percentage calculation works ?

Nov 01 2012 (20:03)
Blog Post# 566744-22     
The Rail Mail™*^~   Added by: सचिन शर्मा سچن شرما*^~  Nov 01 2012 (22:11)
Posting Reply got from Mod sir in pvt, to let others also know this query.
PNR Accuracy = No. of Correct Predictions/Total Predictions. Cancelled tickets don't count.
PNR Predictions are separated into 3 slabs:
(< 30 days),
Recent (30 - 60 days) and
Old (> 60 days) predictions.
Each of the 3 slabs have their independent PNR Accuracies calculated using the simple formula shown above.
To get the Aggregate accuracy, we average out all 3 of the above numbers, but provide different weightages.
Recent Predictions get twice the weight of Old Predictions.
Current Predictions get twice the weight of Recent Predictions.
We have done this because people's PNR Accuracy usually improves with time, as they get more experience, and we do not want their old bad predictions to reduce their overall accuracy %.
Say you have made 200 total predictions out of which 100 were correct.
100 Tot Predictions/60 correct were made before 60 days - OLD
70 Tot Predictions/30 correct within 30-60 days - RECENT
30 Tot Predictions/10 correct within 30 days - CURRENT
Your accuracy % is:
(60*1 + 30*2 + 10*4)/(100*1 + 70*2 + 30*4) = 44%
In the example, you have made 50% total correct predictions 100/200. But in the past 30 days, you only got 10/30 correct. Since we give more weight to current predictions, your overall accuracy is only 44%."
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