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    ä tc¢  ã                   @   s*   d g fdd„Z dd„ Zdd„ Zdd„ Zd S )	Nc                 C   s  dd„ |D ƒ}|}d}d}	t t|ƒƒD ]¾}
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  ||
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< qò||	fS )a—  
        ## given a point, look for a better one nearby
        one coord at a time
        
        f is a function that takes a list of floats (of the same length as point) as an input
        args is a dict of any additional arguments to pass to f
        delta, and point are same-length lists of floats
        prevbest is a float
        
        point and delta are both modified by the function
    c                 S   s   g | ]}|‘qS © r   )Ú.0Úxr   r   úI/home/sensei/ce-5319-webroot/MLBE4CE/chapters/optimization/hookejeeves.pyÚ
<listcomp>   s     z&_hooke_best_nearby.<locals>.<listcomp>g        é    é   )ÚrangeÚlenÚ_value_in_bounds)ÚfÚdeltaÚpointZprevbestÚboundsÚargsÚzZminfZftmpZfevÚir   r   r   Ú_hooke_best_nearby   s(    ,,r   c                 C   s`   t t| ƒƒD ]N}| | || d k r6|| d | |< q| | || d kr|| d | |< qdS )z?
        shifts the point so it is within the given bounds
    r   r   N©r   r	   )r   r   r   r   r   r   Ú_point_in_bounds-   s
    r   c                 C   sL   d}t t| ƒƒD ]6}| | || d k r.d}q| | || d krd}q|S )z<
        true if the point is in the bounds, else false
    Tr   Fr   r   )r   r   Úoutr   r   r   r   Ú_is_point_in_bounds7   s    r   c                 C   s    | |k r|S | |krt S | S d S )N)Zhight)ÚvalÚlowÚhighr   r   r   r
   C   s
    r
   )r   r   r   r
   r   r   r   r   Ú<module>   s   +
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