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Diffstat (limited to 'projectionobserver.cpp')
| -rw-r--r-- | projectionobserver.cpp | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/projectionobserver.cpp b/projectionobserver.cpp deleted file mode 100644 index 94f266a..0000000 --- a/projectionobserver.cpp +++ /dev/null @@ -1,210 +0,0 @@ -#include "projectionobserver.h" - -#include <algorithm> -#include <cmath> - -#include "mp.h" -#include "numericrange.h" - -ProjectionObserver::ProjectionObserver(const arma::mat &X, - const arma::uvec &cpIndices) - : m_type(ObserverCurrent) - , m_X(X) - , m_cpIndices(cpIndices) - , m_rpIndices(X.n_rows - cpIndices.n_elem) - , m_cpSelectionEmpty(true) - , m_rpSelectionEmpty(true) - , m_values(X.n_rows) - , m_prevValues(X.n_rows) - , m_firstValues(X.n_rows) - , m_hasFirst(false) - , m_hasPrev(false) -{ - m_distX = mp::dist(m_X); - - NumericRange<arma::uword> allIndices(0, m_X.n_rows); - std::set_symmetric_difference(allIndices.cbegin(), allIndices.cend(), - m_cpIndices.cbegin(), m_cpIndices.cend(), m_rpIndices.begin()); - - computeAlphas(); -} - -void ProjectionObserver::computeAlphas() -{ - m_influences.set_size(m_X.n_rows); - m_alphas.set_size(m_rpIndices.n_elem, m_cpIndices.n_elem); - - for (arma::uword i = 0; i < m_rpIndices.n_elem; i++) { - double sum = 0; - const arma::rowvec &x = m_X.row(m_rpIndices[i]); - for (arma::uword j = 0; j < m_cpIndices.n_elem; j++) { - double norm = arma::norm(x - m_X.row(m_cpIndices[j])); - m_alphas(i, j) = 1.0 / std::max(norm * norm, 1e-6); - sum += m_alphas(i, j); - } - - for (arma::uword j = 0; j < m_cpIndices.n_elem; j++) { - m_alphas(i, j) /= sum; - } - } -} - -void ProjectionObserver::undo() -{ - if (m_hasPrev) { - m_hasPrev = false; - m_distY = m_prevDistY; - m_values = m_prevValues; - - if (m_cpSelectionEmpty && m_rpSelectionEmpty) { - emitValuesChanged(); - } - } -} - -void ProjectionObserver::reset() -{ - if (m_hasFirst) { - m_hasPrev = false; - m_distY = m_firstDistY; - m_values = m_firstValues; - - if (m_cpSelectionEmpty && m_rpSelectionEmpty) { - emitValuesChanged(); - } - } -} - -void ProjectionObserver::addMap(const arma::mat &Y) -{ - if (m_hasFirst) { - m_hasPrev = true; - m_prevDistY = m_distY; - m_prevValues = m_values; - } - - m_distY = mp::dist(Y); - - mp::aggregatedError(m_distX, m_distY, m_values); - - if (!m_hasFirst) { - m_hasFirst = true; - m_firstDistY = m_distY; - m_firstValues = m_values; - } - - if (m_cpSelectionEmpty && m_rpSelectionEmpty) { - emitValuesChanged(); - } -} - -bool ProjectionObserver::setType(ObserverType type) -{ - if (m_type == type) { - return true; - } - - if ((type == ObserverDiffPrevious && !m_hasPrev) - || (type == ObserverDiffFirst && !m_hasFirst)) { - return false; - } - - m_type = type; - if (!m_cpSelectionEmpty || !m_rpSelectionEmpty) { - // We changed our type, but cannot emit values since we have non-empty - // selections - return true; - } - return emitValuesChanged(); -} - -void ProjectionObserver::setCPSelection(const std::vector<bool> &cpSelection) -{ - m_cpSelection.clear(); - for (int i = 0; i < cpSelection.size(); i++) { - if (cpSelection[i]) { - m_cpSelection.push_back(i); - } - } - m_cpSelectionEmpty = m_cpSelection.empty(); - - if (!m_cpSelectionEmpty) { - // compute the influence of CP selection on each RP - for (arma::uword rp = 0; rp < m_rpIndices.n_elem; rp++) { - m_influences[m_rpIndices[rp]] = 0; - const arma::rowvec &row = m_alphas.row(rp); - for (auto cp: m_cpSelection) { - m_influences[m_rpIndices[rp]] += row[cp]; - } - } - - emit rpValuesChanged(m_influences(m_rpIndices)); - } else { - emitValuesChanged(); - } -} - -void ProjectionObserver::setRPSelection(const std::vector<bool> &rpSelection) -{ - m_rpSelection.clear(); - for (int i = 0; i < rpSelection.size(); i++) { - if (rpSelection[i]) { - m_rpSelection.push_back(i); - } - } - m_rpSelectionEmpty = m_rpSelection.empty(); - - if (!m_rpSelectionEmpty) { - // compute how influent is each CP on RP selection - for (arma::uword cp = 0; cp < m_cpIndices.n_elem; cp++) { - m_influences[m_cpIndices[cp]] = 0; - for (auto rp: m_rpSelection) { - m_influences[m_cpIndices[cp]] += m_alphas(rp, cp); - } - } - - emit cpValuesChanged(m_influences(m_cpIndices)); - } else { - emit cpValuesChanged(arma::vec()); - } -} - -bool ProjectionObserver::emitValuesChanged() const -{ - switch (m_type) { - case ObserverCurrent: - emit rpValuesChanged(m_values(m_rpIndices)); - emit valuesChanged(m_values); - return true; - case ObserverDiffPrevious: - if (m_hasPrev) { - arma::vec diff = m_values - m_prevValues; - emit rpValuesChanged(diff(m_rpIndices)); - emit valuesChanged(diff); - return true; - } - return false; - case ObserverDiffFirst: - if (m_hasFirst) { - arma::vec diff = m_values - m_firstValues; - emit rpValuesChanged(diff(m_rpIndices)); - emit valuesChanged(diff); - return true; - } - return false; - default: - return false; - } -} - -void ProjectionObserver::setRewind(double t) -{ - if (!m_hasPrev || !m_cpSelectionEmpty || !m_rpSelectionEmpty) { - return; - } - - arma::vec values = m_values * t + m_prevValues * (1.0 - t); - emit cpValuesRewound(values(m_cpIndices)); - emit rpValuesRewound(values(m_rpIndices)); - emit valuesRewound(values); -} |