double partial_fit(const IntegerVector x_irow,
const IntegerVector x_icol,
const NumericVector x_val,
const IntegerVector iter_order) {
this->adaGradIter.init(x_irow, x_icol, x_val, iter_order, gloveFit);
parallelReduce(0, x_irow.size(), adaGradIter, GRAIN_SIZE);
return (this->adaGradIter.global_cost);
}
// [[Rcpp::export]]
List make_index_parallel( DataFrame data, CharacterVector by ){
int n = data.nrows() ;
Visitors visitors(data, by) ;
IndexMaker indexer(visitors) ;
parallelReduce(0, n, indexer) ;
return indexer.get() ;
}
// [[Rcpp::export]]
List detail_make_index_parallel( DataFrame data, CharacterVector by ){
int n = data.nrows() ;
Timers timers(n);
Visitors visitors(data, by) ;
IndexMaker indexer(visitors) ;
TimedReducer<IndexMaker, Timer, tbb::mutex, tbb::mutex::scoped_lock> timed_indexer(indexer, timers) ;
parallelReduce(0, n, timed_indexer, 100) ;
return timed_indexer.get() ;
}