You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: AssociationLDA2.m
    path of file: ./repos/CBIG/external_packages/matlab/non_default_packages/topictoolbox
    
    the code of the file until where you have to start completion: function [ probs ] = AssociationLDA2( WP , BETA , W1 )

    
function [ probs ] = AssociationLDA2( WP , BETA , W1 )
%% Function WriteTopics
%
% works on single samples as well as multiple samples
if iscell( WP )
    % we are dealing with multiple Gibbs samples. Need to average
    % predictions over these samples. Note that the WP samples do not have
    % to contain the same number of topics
    
    NS = length( WP ); % number of samples
    NW = size( WP{ 1 } , 1 ); % number of words
    NW1 = length( W1 ); % number of W1 cues
    probs = zeros( NW , NW1 );
    
    for s=1:NS 
        T  = size( WP{ s } , 2 ); % number of topics
        
        sumt  = full( sum( WP{ s } , 1 )) + NW * BETA;
        beta2 = BETA ./ sumt;

        WP2   = WP{ s }; % note WP2 stays sparse
        for z=1:T
            WP2( : , z ) = WP2( : , z ) / sumt( z );
        end