Examples of org.apache.commons.math3.util.OpenIntToDoubleHashMap.Iterator

Package org.apache.commons.math3.util.OpenIntToDoubleHashMap

Examples of org.apache.commons.math3.util.OpenIntToDoubleHashMap.Iterator

org.apache.commons.math3.util.OpenIntToDoubleHashMap.Iterator
Weight matrix of the residuals between model and observations.
Immutable class. @version $Id: Weight.java 1416643 2012-12-03 19:37:14Z tn $ @since 3.1

        int result = 1;
        long temp;
        temp = Double.doubleToLongBits(epsilon);
        result = prime * result + (int) (temp ^ (temp >>> 32));
        result = prime * result + virtualSize;
        Iterator iter = entries.iterator();
        while (iter.hasNext()) {
            iter.advance();
            temp = Double.doubleToLongBits(iter.value());
            result = prime * result + (int) (temp ^ (temp >>32));
        }
        return result;
    }

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        }
        if (Double.doubleToLongBits(epsilon) !=
            Double.doubleToLongBits(other.epsilon)) {
            return false;
        }
        Iterator iter = entries.iterator();
        while (iter.hasNext()) {
            iter.advance();
            double test = other.getEntry(iter.key());
            if (Double.doubleToLongBits(test) != Double.doubleToLongBits(iter.value())) {
                return false;
            }
        }
        iter = other.getEntries().iterator();
        while (iter.hasNext()) {
            iter.advance();
            double test = iter.value();
            if (Double.doubleToLongBits(test) != Double.doubleToLongBits(getEntry(iter.key()))) {
                return false;
            }
        }
        return true;
    }

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        int result = 1;
        long temp;
        temp = Double.doubleToLongBits(epsilon);
        result = prime * result + (int) (temp ^ (temp >>> 32));
        result = prime * result + virtualSize;
        Iterator iter = entries.iterator();
        while (iter.hasNext()) {
            iter.advance();
            temp = Double.doubleToLongBits(iter.value());
            result = prime * result + (int) (temp ^ (temp >>32));
        }
        return result;
    }

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        }
        if (Double.doubleToLongBits(epsilon) !=
            Double.doubleToLongBits(other.epsilon)) {
            return false;
        }
        Iterator iter = entries.iterator();
        while (iter.hasNext()) {
            iter.advance();
            double test = other.getEntry(iter.key());
            if (Double.doubleToLongBits(test) != Double.doubleToLongBits(iter.value())) {
                return false;
            }
        }
        iter = other.getEntries().iterator();
        while (iter.hasNext()) {
            iter.advance();
            double test = iter.value();
            if (Double.doubleToLongBits(test) != Double.doubleToLongBits(getEntry(iter.key()))) {
                return false;
            }
        }
        return true;
    }

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     */
    public OpenMapRealVector add(OpenMapRealVector v) {
        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;
    }

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     * @param v vector to append
     * @return The result of appending {@code v} to self
     */
    public OpenMapRealVector append(OpenMapRealVector v) {
        OpenMapRealVector res = new OpenMapRealVector(this, v.getDimension());
        Iterator iter = v.entries.iterator();
        while (iter.hasNext()) {
            iter.advance();
            res.setEntry(iter.key() + virtualSize, iter.value());
        }
        return res;
    }

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     * if the dimensions do not match.
     */
    public double dotProduct(OpenMapRealVector v) {
        checkVectorDimensions(v.getDimension());
        boolean thisIsSmaller  = entries.size() < v.entries.size();
        Iterator iter = thisIsSmaller  ? entries.iterator() : v.entries.iterator();
        OpenIntToDoubleHashMap larger = thisIsSmaller  ? v.entries : entries;
        double d = 0;
        while(iter.hasNext()) {
            iter.advance();
            d += iter.value() * larger.get(iter.key());
        }
        return d;
    }

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    /** {@inheritDoc} */
    @Override
    public OpenMapRealVector ebeDivide(RealVector v) {
        checkVectorDimensions(v.getDimension());
        OpenMapRealVector res = new OpenMapRealVector(this);
        Iterator iter = entries.iterator();
        while (iter.hasNext()) {
            iter.advance();
            res.setEntry(iter.key(), iter.value() / v.getEntry(iter.key()));
        }
        return res;
    }

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    /** {@inheritDoc} */
    @Override
    public OpenMapRealVector ebeMultiply(RealVector v) {
        checkVectorDimensions(v.getDimension());
        OpenMapRealVector res = new OpenMapRealVector(this);
        Iterator iter = entries.iterator();
        while (iter.hasNext()) {
            iter.advance();
            res.setEntry(iter.key(), iter.value() * v.getEntry(iter.key()));
        }
        return res;
    }

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    public OpenMapRealVector getSubVector(int index, int n) {
        checkIndex(index);
        checkIndex(index + n - 1);
        OpenMapRealVector res = new OpenMapRealVector(n);
        int end = index + n;
        Iterator iter = entries.iterator();
        while (iter.hasNext()) {
            iter.advance();
            int key = iter.key();
            if (key >= index && key < end) {
                res.setEntry(key - index, iter.value());
            }
        }
        return res;
    }

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