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Fundamentals of Bayesian Data Analysis in R

Rasmus Bååth

Data Scientist

O distribuție de probabilitate peste un parametru de interes

Fundamentals of Bayesian Data Analysis in R

O distribuție de probabilitate peste un parametru de interes

Fundamentals of Bayesian Data Analysis in R

O distribuție de probabilitate peste un parametru de interes

Fundamentals of Bayesian Data Analysis in R

O distribuție de probabilitate peste un parametru de interes

Fundamentals of Bayesian Data Analysis in R

Motivele pentru a folosi analiza bayesiană a datelor

  1. Puteți include surse de informații suplimentare față de date.
  2. Puteți face orice comparații între grupuri sau seturi de date.
  3. Puteți folosi rezultatul unei analize bayesiene pentru Analiza Decizională.
  4. Puteți modifica modelul statistic de bază.
Fundamentals of Bayesian Data Analysis in R

Fundamentals of Bayesian Data Analysis in R

Fundamentals of Bayesian Data Analysis in R

O analiză decizională simplă

video_cost <- 0.25
text_cost <- 0.05
visitor_spend <- 2.53
Fundamentals of Bayesian Data Analysis in R
video_cost <- 0.25
text_cost <- 0.05
visitor_spend <- 2.53
posterior

   video_prop text_prop 
1        0.08      0.10 
2        0.10      0.07 
3        0.16      0.05 
4        0.09      0.05  
5        0.18      0.03 
6        0.13      0.05  
7        0.12      0.10  
8        0.10      0.04 
9        0.11      0.09
10       0.18      0.05
11       0.12      0.04
12       0.13      0.07
Fundamentals of Bayesian Data Analysis in R
video_cost <- 0.25
text_cost <- 0.05
visitor_spend <- 2.53  
posterior$video_profit <- posterior$video_prop * visitor_spend - video_cost
posterior

   video_prop text_prop video_profit 
1        0.08      0.10        -0.04 
2        0.10      0.07         0.00  
3        0.16      0.05         0.15 
4        0.09      0.05        -0.02 
5        0.18      0.03         0.21
6        0.13      0.05         0.08 
7        0.12      0.10         0.06
8        0.10      0.04         0.01
9        0.11      0.09         0.02
10       0.18      0.05         0.21
11       0.12      0.04         0.06
12       0.13      0.07         0.08
Fundamentals of Bayesian Data Analysis in R
video_cost <- 0.25
text_cost <- 0.05
visitor_spend <- 2.53
posterior$video_profit <- posterior$video_prop * visitor_spend - video_cost
posterior$text_profit <-posterior$text_prop * visitor_spend - text_cost
posterior

   video_prop text_prop video_profit text_profit 
1        0.08      0.10        -0.04        0.21
2        0.10      0.07         0.00        0.12
3        0.16      0.05         0.15        0.09
4        0.09      0.05        -0.02        0.08
5        0.18      0.03         0.21        0.02
6        0.13      0.05         0.08        0.09
7        0.12      0.10         0.06        0.20
8        0.10      0.04         0.01        0.05
9        0.11      0.09         0.02        0.17
10       0.18      0.05         0.21        0.09
11       0.12      0.04         0.06        0.05
12       0.13      0.07         0.08        0.12
Fundamentals of Bayesian Data Analysis in R
video_cost <- 0.25
text_cost <- 0.05
visitor_spend <- 2.53
posterior$video_profit <- posterior$video_prop * visitor_spend - video_cost
posterior$text_profit <-posterior$text_prop * visitor_spend - text_cost
posterior$profit_diff <- posterior$video_profit - posterior$text_profit
posterior
   video_prop text_prop video_profit text_profit profit_diff
1        0.08      0.10        -0.04        0.21       -0.26
2        0.10      0.07         0.00        0.12       -0.12
3        0.16      0.05         0.15        0.09        0.07
4        0.09      0.05        -0.02        0.08       -0.10
5        0.18      0.03         0.21        0.02        0.18
6        0.13      0.05         0.08        0.09        0.00
7        0.12      0.10         0.06        0.20       -0.14 
8        0.10      0.04         0.01        0.05       -0.04 
9        0.11      0.09         0.02        0.17       -0.15
10       0.18      0.05         0.21        0.09        0.12
11       0.12      0.04         0.06        0.05        0.00
12       0.13      0.07         0.08        0.12       -0.04
Fundamentals of Bayesian Data Analysis in R

Luați o decizie bazată pe date!

Fundamentals of Bayesian Data Analysis in R

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