902624f557
"In fact, the f(void) style has been called an "abomination" by Bjarne Stroustrup, the creator of C++, Dennis Ritchie, the co-creator of C, and Doug McIlroy, head of the research department where Unix was born."
431 lines
8.7 KiB
C++
431 lines
8.7 KiB
C++
#ifndef YAP_PACKAGES_CLPBN_HORUS_UTIL_H_
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#define YAP_PACKAGES_CLPBN_HORUS_UTIL_H_
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#include <cmath>
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#include <cassert>
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#include <vector>
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#include <queue>
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#include <set>
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#include <unordered_map>
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#include <algorithm>
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#include <limits>
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#include <string>
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#include <iostream>
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#include <sstream>
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#include "Horus.h"
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namespace Horus {
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namespace {
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const double NEG_INF = -std::numeric_limits<double>::infinity();
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}
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namespace Util {
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template <typename T> void
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addToVector (std::vector<T>&, const std::vector<T>&);
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template <typename T> void
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addToSet (std::set<T>&, const std::vector<T>&);
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template <typename T> void
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addToQueue (std::queue<T>&, const std::vector<T>&);
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template <typename T> bool
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contains (const std::vector<T>&, const T&);
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template <typename T> bool contains
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(const std::set<T>&, const T&);
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template <typename K, typename V> bool
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contains (const std::unordered_map<K, V>&, const K&);
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template <typename T> size_t
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indexOf (const std::vector<T>&, const T&);
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template <class Operation> void
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apply_n_times (Params& v1, const Params& v2, unsigned reps, Operation);
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template <typename T> void
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log (std::vector<T>&);
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template <typename T> void
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exp (std::vector<T>&);
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template <typename T> std::string
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elementsToString (const std::vector<T>& v, std::string sep = " ");
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template <typename T> std::string
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toString (const T&);
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template <> std::string
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toString (const bool&);
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double logSum (double, double);
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unsigned maxUnsigned();
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unsigned stringToUnsigned (std::string);
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double stringToDouble (std::string);
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double factorial (unsigned);
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double logFactorial (unsigned);
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unsigned nrCombinations (unsigned, unsigned);
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size_t sizeExpected (const Ranges&);
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unsigned nrDigits (int);
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bool isInteger (const std::string&);
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std::string parametersToString (
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const Params&, unsigned = Constants::precision);
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std::vector<std::string> getStateLines (const Vars&);
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bool setHorusFlag (std::string option, std::string value);
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void printHeader (std::string, std::ostream& os = std::cout);
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void printSubHeader (std::string, std::ostream& os = std::cout);
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void printAsteriskLine (std::ostream& os = std::cout);
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void printDashedLine (std::ostream& os = std::cout);
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} // namespace Util
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template <typename T> void
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Util::addToVector (std::vector<T>& v, const std::vector<T>& elements)
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{
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v.insert (v.end(), elements.begin(), elements.end());
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}
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template <typename T> void
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Util::addToSet (std::set<T>& s, const std::vector<T>& elements)
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{
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s.insert (elements.begin(), elements.end());
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}
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template <typename T> void
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Util::addToQueue (std::queue<T>& q, const std::vector<T>& elements)
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{
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for (size_t i = 0; i < elements.size(); i++) {
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q.push (elements[i]);
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}
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}
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template <typename T> bool
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Util::contains (const std::vector<T>& v, const T& e)
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{
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return std::find (v.begin(), v.end(), e) != v.end();
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}
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template <typename T> bool
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Util::contains (const std::set<T>& s, const T& e)
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{
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return s.find (e) != s.end();
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}
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template <typename K, typename V> bool
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Util::contains (const std::unordered_map<K, V>& m, const K& k)
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{
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return m.find (k) != m.end();
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}
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template <typename T> size_t
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Util::indexOf (const std::vector<T>& v, const T& e)
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{
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return std::distance (v.begin(),
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std::find (v.begin(), v.end(), e));
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}
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template <class Operation> void
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Util::apply_n_times (
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Params& v1,
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const Params& v2,
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unsigned repetitions,
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Operation unary_op)
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{
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Params::iterator first = v1.begin();
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Params::const_iterator last = v1.end();
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Params::const_iterator first2 = v2.begin();
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Params::const_iterator last2 = v2.end();
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while (first != last) {
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for (first2 = v2.begin(); first2 != last2; ++first2) {
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std::transform (first, first + repetitions, first,
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std::bind1st (unary_op, *first2));
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first += repetitions;
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}
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}
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}
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template <typename T> void
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Util::log (std::vector<T>& v)
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{
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std::transform (v.begin(), v.end(), v.begin(), ::log);
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}
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template <typename T> void
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Util::exp (std::vector<T>& v)
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{
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std::transform (v.begin(), v.end(), v.begin(), ::exp);
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}
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template <typename T> std::string
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Util::elementsToString (const std::vector<T>& v, std::string sep)
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{
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std::stringstream ss;
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for (size_t i = 0; i < v.size(); i++) {
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ss << ((i != 0) ? sep : "") << v[i];
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}
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return ss.str();
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}
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template <typename T> std::string
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Util::toString (const T& t)
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{
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std::stringstream ss;
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ss << t;
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return ss.str();
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}
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inline double
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Util::logSum (double x, double y)
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{
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// std::log (std::exp (x) + std::exp (y)) can overflow!
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assert (std::isnan (x) == false);
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assert (std::isnan (y) == false);
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if (x == NEG_INF) {
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return y;
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}
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if (y == NEG_INF) {
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return x;
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}
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// if one value is much smaller than the other,
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// keep the larger value
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const double tol = 460.517; // log (1e200)
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if (x < y - tol) {
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return y;
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}
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if (y < x - tol) {
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return x;
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}
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assert (std::isnan (x - y) == false);
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const double exp_diff = std::exp (x - y);
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if (std::isfinite (exp_diff) == false) {
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// difference is too large
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return x > y ? x : y;
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}
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// otherwise return the sum
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return y + std::log (static_cast<double>(1.0) + exp_diff);
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}
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inline unsigned
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Util::maxUnsigned()
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{
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return std::numeric_limits<unsigned>::max();
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}
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namespace LogAware {
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inline double one() { return Globals::logDomain ? 0.0 : 1.0; }
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inline double zero() { return Globals::logDomain ? NEG_INF : 0.0; }
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inline double addIdenty() { return Globals::logDomain ? NEG_INF : 0.0; }
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inline double multIdenty() { return Globals::logDomain ? 0.0 : 1.0; }
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inline double withEvidence() { return Globals::logDomain ? 0.0 : 1.0; }
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inline double noEvidence() { return Globals::logDomain ? NEG_INF : 0.0; }
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inline double log (double v) { return Globals::logDomain ? ::log (v) : v; }
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inline double exp (double v) { return Globals::logDomain ? ::exp (v) : v; }
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void normalize (Params&);
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double getL1Distance (const Params&, const Params&);
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double getMaxNorm (const Params&, const Params&);
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double pow (double, unsigned);
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double pow (double, double);
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void pow (Params&, unsigned);
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void pow (Params&, double);
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} // namespace LogAware
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template <typename T> void
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operator+=(std::vector<T>& v, double val)
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{
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std::transform (v.begin(), v.end(), v.begin(),
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std::bind2nd (std::plus<double>(), val));
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}
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template <typename T> void
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operator-=(std::vector<T>& v, double val)
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{
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std::transform (v.begin(), v.end(), v.begin(),
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std::bind2nd (std::minus<double>(), val));
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}
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template <typename T> void
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operator*=(std::vector<T>& v, double val)
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{
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std::transform (v.begin(), v.end(), v.begin(),
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std::bind2nd (std::multiplies<double>(), val));
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}
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template <typename T> void
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operator/=(std::vector<T>& v, double val)
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{
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std::transform (v.begin(), v.end(), v.begin(),
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std::bind2nd (std::divides<double>(), val));
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}
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template <typename T> void
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operator+=(std::vector<T>& a, const std::vector<T>& b)
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{
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assert (a.size() == b.size());
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std::transform (a.begin(), a.end(), b.begin(), a.begin(),
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std::plus<double>());
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}
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template <typename T> void
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operator-=(std::vector<T>& a, const std::vector<T>& b)
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{
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assert (a.size() == b.size());
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std::transform (a.begin(), a.end(), b.begin(), a.begin(),
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std::minus<double>());
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}
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template <typename T> void
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operator*=(std::vector<T>& a, const std::vector<T>& b)
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{
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assert (a.size() == b.size());
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std::transform (a.begin(), a.end(), b.begin(), a.begin(),
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std::multiplies<double>());
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}
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template <typename T> void
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operator/=(std::vector<T>& a, const std::vector<T>& b)
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{
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assert (a.size() == b.size());
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std::transform (a.begin(), a.end(), b.begin(), a.begin(),
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std::divides<double>());
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}
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template <typename T> void
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operator^=(std::vector<T>& v, double exp)
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{
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std::transform (v.begin(), v.end(), v.begin(),
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std::bind2nd (std::ptr_fun<double, double, double> (std::pow), exp));
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}
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template <typename T> void
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operator^=(std::vector<T>& v, int iexp)
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{
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std::transform (v.begin(), v.end(), v.begin(),
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std::bind2nd (std::ptr_fun<double, int, double> (std::pow), iexp));
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}
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template <typename T> std::ostream&
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operator<< (std::ostream& os, const std::vector<T>& v)
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{
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os << "[" ;
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os << Util::elementsToString (v, ", ");
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os << "]" ;
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return os;
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}
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namespace FuncObj {
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template<typename T>
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struct max : public std::binary_function<T, T, T> {
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T operator() (const T& x, const T& y) const {
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return x < y ? y : x;
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}};
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template <typename T>
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struct abs_diff : public std::binary_function<T, T, T> {
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T operator() (const T& x, const T& y) const {
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return std::abs (x - y);
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}};
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template <typename T>
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struct abs_diff_exp : public std::binary_function<T, T, T> {
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T operator() (const T& x, const T& y) const {
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return std::abs (std::exp (x) - std::exp (y));
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}};
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} // namespace FuncObj
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} // namespace Horus
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#endif // YAP_PACKAGES_CLPBN_HORUS_UTIL_H_
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