Format: application/x-python-code
⬇ Download File (3.0 KB)
   1  o
   2  
   3  ?�h��@sddlZGdd�d�ZdS)�Nc@sreZdZdefdd�Zdejdejfdd�Zdejdejfdd	�Zdejdejfd
   4  d�Z	dejdejfdd
   5  �Z
   6  dS)�Sampler�sampling_configcCs
   7  ||_dS)N)r)�selfr�r�<C:\Users\shubh\Videos\recall\recall_audit_sampler\sampler.py�__init__s
   8  zSampler.__init__�df�returncCsP|j�d�}|dkr|�|�S|dkr|�|�S|dkr!|�|�Std|����)N�type�random�
   9  stratifiedzstratified-proportionalzUnsupported sampling strategy: )r�get�
  10  random_sample�stratified_sample�stratified_proportional_sample�
  11  ValueError)rr�strategyrrr�samples
  12  
  13  
  14  zSampler.samplecCs4|j�d�}|durtd��|jt|t|��dd�S)N�sample_sizez4`sample_size` must be specified for random sampling.�*��n�random_state)rr
  15  rr�min�len)rrrrrrrszSampler.random_samplecCs@|j�d�}|j�d�}|std��|�|�}g}|durI|j�dd�}td|�d��|D]\}}t|t|��}	|	dkrG|�|j|	d	d
  16  ��q.nG|D]D\}}t	|t
  17  �r\d�tt
  18  |��nt
  19  |�}
  20  t	|t�rk|�|
  21  d�n|}t|t|��}	|	dkr�|�|j|	d	d
  22  ��td|
  23  �d
  24  |�d|	���qK|r�tj|dd�Stj|jd�S)N�by�ratioz/`by` must be specified for stratified sampling.Zdefault_per_group�
  25  z1[INFO] No ratio provided. Using default ratio of z per group.rrr�:z
  26  [STRATIFIED] u → requested: z, sampled: T��ignore_index��columns)rr
  27  r�groupby�printrr�appendr�
  28  isinstance�tuple�join�map�str�dict�pd�concat�	DataFramer")rrrr�grouped�sampled_groupsZ
  29  default_ratio�	group_key�group_dfr�
  30  lookup_keyZgroup_nrrrrs0
  31  ��"� zSampler.stratified_samplecCsN|j�d�}|j�d�}|std��|�|�}g}|durMdt|�}tdt|d��d��|D]\}}tt|�|�}	|	dkrK|�|j	|	d	d
  32  ��q1nJ|D]G\}}t
  33  |t�r`d�t
  34  t|��nt|�}
  35  t
  36  |t�ro|�|
  37  d�n|}tt|�|�}	|	dkr�|�|j	|	d	d
  38  ��td|
  39  �d
  40  |d�d|	���qO|r�tj|dd�Stj|jd�S)Nr�
  41  proportionz<`by` must be specified for stratified-proportional sampling.�z+[INFO] No proportion provided. Using equal �dz% per group.rrrrz
  42  [STRAT-PROP] u → u% → sampled: Trr!)rr
  43  rr#rr$�round�intr%rr&r'r(r)r*r+r,r-r.r")rrrr4r/r0Zequal_pr1r2rr3�prrrr6s0
  44  ��"� z&Sampler.stratified_proportional_sampleN)�__name__�
  45  __module__�__qualname__r+rr,r.rrrrrrrrrsr)�pandasr,rrrrr�<module>s