def _sum_item(value, border=""): item = QStandardItem() item.setData(value, Qt.DisplayRole) item.setTextAlignment(Qt.AlignRight | Qt.AlignVCenter) item.setFlags(Qt.ItemIsEnabled) item.setFont(bold_font) item.setData(border, BorderRole) item.setData(QColor(192, 192, 192), BorderColorRole) return item
def show_results(self): minimize = self.SCORING_METHODS[self.scoring][2] k_scores = [(k, self.SCORING_METHODS[self.scoring][1](run)) for k, run in self.optimization_runs] scores = list(zip(*k_scores))[1] if minimize: best_score, worst_score = min(scores), max(scores) else: best_score, worst_score = max(scores), min(scores) best_run = scores.index(best_score) score_span = (best_score - worst_score) or 1 max_score = max(scores) nplaces = min(5, np.floor(abs(math.log(max(max_score, 1e-10)))) + 2) fmt = "{{:.{}f}}".format(int(nplaces)) model = self.table_model model.setRowCount(len(k_scores)) for i, (k, score) in enumerate(k_scores): item = model.item(i, 0) if item is None: item = QStandardItem() item.setData(k, Qt.DisplayRole) item.setTextAlignment(Qt.AlignCenter) model.setItem(i, 0, item) item = model.item(i, 1) if item is None: item = QStandardItem() item.setData(fmt.format(score) if not np.isnan(score) else 'out-of-memory error', Qt.DisplayRole) bar_ratio = 0.95 * (score - worst_score) / score_span item.setData(bar_ratio, gui.TableBarItem.BarRole) model.setItem(i, 1, item) self.table_view.resizeRowsToContents() self.table_view.selectRow(best_run) self.table_view.show() if minimize: self.table_box.setTitle("Scoring (smaller is better)") else: self.table_box.setTitle("Scoring (bigger is better)") QTimer.singleShot(0, self.adjustSize)
def _create_value_item(text): item = QStandardItem() item.setData(text, Qt.DisplayRole) item.setTextAlignment(Qt.AlignRight | Qt.AlignVCenter) item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable) return item
def update_stats_model(self): # Update the results_model with up to date scores. # Note: The target class specific scores (if requested) are # computed as needed in this method. model = self.score_table.model # clear the table model, but preserving the header labels for r in reversed(range(model.rowCount())): model.takeRow(r) target_index = None if self.data is not None: class_var = self.data.domain.class_var if self.data.domain.has_discrete_class and \ self.class_selection != self.TARGET_AVERAGE: target_index = class_var.values.index(self.class_selection) else: class_var = None errors = [] has_missing_scores = False names = [] for key, slot in self.learners.items(): name = learner_name(slot.learner) names.append(name) head = QStandardItem(name) head.setData(key, Qt.UserRole) results = slot.results if results is not None and results.success: train = QStandardItem("{:.3f}".format( results.value.train_time)) train.setTextAlignment(Qt.AlignRight | Qt.AlignVCenter) train.setData(key, Qt.UserRole) test = QStandardItem("{:.3f}".format(results.value.test_time)) test.setTextAlignment(Qt.AlignRight | Qt.AlignVCenter) test.setData(key, Qt.UserRole) row = [head, train, test] else: row = [head] if isinstance(results, Try.Fail): head.setToolTip(str(results.exception)) head.setText("{} (error)".format(name)) head.setForeground(QtGui.QBrush(Qt.red)) if isinstance(results.exception, DomainTransformationError) \ and self.resampling == self.TestOnTest: self.Error.test_data_incompatible() self.Information.test_data_transformed.clear() else: errors.append("{name} failed with error:\n" "{exc.__class__.__name__}: {exc!s}".format( name=name, exc=slot.results.exception)) if class_var is not None and class_var.is_discrete and \ target_index is not None: if slot.results is not None and slot.results.success: ovr_results = results_one_vs_rest(slot.results.value, target_index) # Cell variable is used immediatelly, it's not stored # pylint: disable=cell-var-from-loop stats = [ Try(scorer_caller(scorer, ovr_results, target=1)) for scorer in self.scorers ] else: stats = None else: stats = slot.stats if stats is not None: for stat, scorer in zip(stats, self.scorers): item = QStandardItem() item.setTextAlignment(Qt.AlignRight | Qt.AlignVCenter) if stat.success: item.setData(float(stat.value[0]), Qt.DisplayRole) else: item.setToolTip(str(stat.exception)) if scorer.name in self.score_table.shown_scores: has_missing_scores = True row.append(item) model.appendRow(row) # Resort rows based on current sorting header = self.score_table.view.horizontalHeader() model.sort(header.sortIndicatorSection(), header.sortIndicatorOrder()) self._set_comparison_headers(names) self.error("\n".join(errors), shown=bool(errors)) self.Warning.scores_not_computed(shown=has_missing_scores)
def __set_horizontal_title(self, titleh): item = QStandardItem() item.setData(titleh, Qt.DisplayRole) item.setTextAlignment(Qt.AlignCenter) self.table_model.setItem(0, self._n_leading_cols, item) self.setSpan(0, self._n_leading_cols, 1, self._n_classesh + 3)