/** * * @return the percentage of none zero elements as a decimal percent. * @since 2.2 */ public double getSparsity() { return (double)entries.size()/(double)getDimension(); }
/** * Optimized method to add two OpenMapRealVectors. * It copies the larger vector, then iterates over the smaller. * * @param v Vector to add. * @return the sum of {@code this} and {@code v}. * @throws DimensionMismatchException if the dimensions do not match. */ public OpenMapRealVector add(OpenMapRealVector v) throws DimensionMismatchException { checkVectorDimensions(v.getDimension()); boolean copyThis = entries.size() > v.entries.size(); OpenMapRealVector res = copyThis ? this.copy() : v.copy(); Iterator iter = copyThis ? v.entries.iterator() : entries.iterator(); OpenIntToDoubleHashMap randomAccess = copyThis ? entries : v.entries; while (iter.hasNext()) { iter.advance(); int key = iter.key(); if (randomAccess.containsKey(key)) { res.setEntry(key, randomAccess.get(key) + iter.value()); } else { res.setEntry(key, iter.value()); } } return res; }
/** * * @return the percentage of none zero elements as a decimal percent. * @since 2.2 */ public double getSparsity() { return (double)entries.size()/(double)getDimension(); }
/** * * @return the percentage of none zero elements as a decimal percent. * @since 2.2 */ public double getSparsity() { return (double)entries.size()/(double)getDimension(); }
/** * Optimized method to add two OpenMapRealVectors. * It copies the larger vector, then iterates over the smaller. * * @param v Vector to add. * @return the sum of {@code this} and {@code v}. * @throws DimensionMismatchException if the dimensions do not match. */ public OpenMapRealVector add(OpenMapRealVector v) throws DimensionMismatchException { checkVectorDimensions(v.getDimension()); boolean copyThis = entries.size() > v.entries.size(); OpenMapRealVector res = copyThis ? this.copy() : v.copy(); Iterator iter = copyThis ? v.entries.iterator() : entries.iterator(); OpenIntToDoubleHashMap randomAccess = copyThis ? entries : v.entries; while (iter.hasNext()) { iter.advance(); int key = iter.key(); if (randomAccess.containsKey(key)) { res.setEntry(key, randomAccess.get(key) + iter.value()); } else { res.setEntry(key, iter.value()); } } return res; }
/** * Optimized method to add two OpenMapRealVectors. * It copies the larger vector, then iterates over the smaller. * * @param v Vector to add. * @return the sum of {@code this} and {@code v}. * @throws DimensionMismatchException if the dimensions do not match. */ public OpenMapRealVector add(OpenMapRealVector v) throws DimensionMismatchException { checkVectorDimensions(v.getDimension()); boolean copyThis = entries.size() > v.entries.size(); OpenMapRealVector res = copyThis ? this.copy() : v.copy(); Iterator iter = copyThis ? v.entries.iterator() : entries.iterator(); OpenIntToDoubleHashMap randomAccess = copyThis ? entries : v.entries; while (iter.hasNext()) { iter.advance(); int key = iter.key(); if (randomAccess.containsKey(key)) { res.setEntry(key, randomAccess.get(key) + iter.value()); } else { res.setEntry(key, iter.value()); } } return res; }