sample_cpc | R Documentation |
Adds 2 new nested columns to the input_df: 'gamma_params' and 'samples'
'gamma_params' in each row should be a tibble of length 2 (k
and \theta
parameters)
'samples' in each row should be a tibble of length 'n_samples'
sample_cpc(input_df, priors, n_samples = 50000)
input_df |
Dataframe containing option_name (str), sum_clicks (dbl), sum_cost (dbl). |
priors |
Optional list of priors k0, theta0 for Gamma.
Default |
n_samples |
Optional integer value. Defaults to 50,000 samples. |
See update_rules vignette for a mathematical representation.
cpc_i ~ Exponential(\lambda)
\lambda ~ Gamma(k, \theta)
Average CPC is sampled from a Gamma distribution with an Exponential likelihood of an individual cost.
input_df with 2 new nested columns 'gamma_params' and 'samples'
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