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id_projection_viewer [2019/02/25 21:52] 77.20.151.25 |
id_projection_viewer [2019/07/14 23:17] (current) 77.20.151.25 |
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| - | Projection Viewer | + | **Projection Viewer** |
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| + | Der Projection Viewer ermöglicht die visuelle Analyse von multivariaten Projektionen in 2D. | ||
| + | Es sind eine Vielzahl verschiedener Funktionen/Features implementiert. Einige ausgewählte | ||
| + | werden an dieser Stelle exemparisch erläutert. | ||
| + | |||
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| + | ---- | ||
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| + | **Visual Classification** | ||
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| + | Die Idee der visuellen Klassifikation ist es mit Hilfe von Auswahlwerkzeugen bestimmte Elemente in der Projektion | ||
| + | auszuwählen welche unserer Meinung nach zusammengehören und ihnen so einer | ||
| + | "neuen" Klasse zuzuweisen. Das dahinterliegende Konzept: Gibt es eine Projektion in denen bestimmte Elemente | ||
| + | eine Struktur aufweisen (Cluster), dann bilden diese Elemente mit hoher Wahrscheinlichkeit auch eine Struktur im | ||
| + | Orginaraum, und mann kann sie gerne bei Bedarf zu einer Klasse zusmmenfassen. Dadurch könnte man | ||
| + | mit visueller Klassification Klassifikatoren interaktiv erstellen, also eine Art von Visuellem Machine Learning. | ||
| + | |||
| + | Eine BA Arbeit eines Studenten von DJLliegt hier: [[http://46.38.235.241/mindmap/BA_Paplo.pdf|BA Visual Classification]] | ||
| + | |||
| + | Der Projektion Viewer bieten einige Werkzeuge für die visuelle Klassifikation an wie in folgender Abbildung und im | ||
| + | folgenden Beschreibungstext ersichtlich sind: | ||
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| There are 5 sections: | There are 5 sections: | ||
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| Add a separator: | Add a separator: | ||
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| This section has 8 buttons: | This section has 8 buttons: | ||
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| Circle/Ellipse(1): Click and move to resize the ellipse. When mouse is released the ellipse is on the screen at that size and the application classifies data. | Circle/Ellipse(1): Click and move to resize the ellipse. When mouse is released the ellipse is on the screen at that size and the application classifies data. | ||
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| Rectangles (2,3): Click and move to resize. | Rectangles (2,3): Click and move to resize. | ||
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| Polygon (4): Click the points or click and move the mouse for more precision. To finish a double click is needed. | Polygon (4): Click the points or click and move the mouse for more precision. To finish a double click is needed. | ||
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| Line (5): Click and move. | Line (5): Click and move. | ||
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| Curve(6): Click and move for the first line. Click again or click and move to set the curve. | Curve(6): Click and move for the first line. Click again or click and move to set the curve. | ||
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| Polyline(7): Click the points or click and move the mouse for more precision (first line will elongate). To finish a double click is needed. | Polyline(7): Click the points or click and move the mouse for more precision (first line will elongate). To finish a double click is needed. | ||
| + | |||
| Freeform Polygon (8): Click and move the mouse. Double click is needed to close the polygon. | Freeform Polygon (8): Click and move the mouse. Double click is needed to close the polygon. | ||
| Edit operations: | Edit operations: | ||
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| Delete All(1): Delete all the objects. | Delete All(1): Delete all the objects. | ||
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| Edit (2): Present a list of separators where the user can move, repaint or delete. | Edit (2): Present a list of separators where the user can move, repaint or delete. | ||
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| Projections(3): Click and then you can move the axes. Click again to end the edition of the projections. | Projections(3): Click and then you can move the axes. Click again to end the edition of the projections. | ||
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| List (4): list of colors and classes. | List (4): list of colors and classes. | ||
| Save and Load: | Save and Load: | ||
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| Save(1): saves the classification in a file. | Save(1): saves the classification in a file. | ||
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| Load(2): loads new data. | Load(2): loads new data. | ||
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| Classify 1( I probably rename it): | Classify 1( I probably rename it): | ||
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| 1 button: save the current classification. | 1 button: save the current classification. | ||
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| 2 button: classifies data based on the last classification saved with button 1. | 2 button: classifies data based on the last classification saved with button 1. | ||
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| Classify 2 Voronoi: | Classify 2 Voronoi: | ||
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| 1 button: save the current classification. | 1 button: save the current classification. | ||
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| 2 button: classifies data based on the last classification saved with button 1. | 2 button: classifies data based on the last classification saved with button 1. | ||
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| Checkbox: enables to see or not the voronoi diagram. | Checkbox: enables to see or not the voronoi diagram. | ||
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| Shortcuts: | Shortcuts: | ||
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| (left) Click and drag an object to move it. | (left) Click and drag an object to move it. | ||
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| Right click over an object to delete it. | Right click over an object to delete it. | ||
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| Middle click (wheel) to filtrate. (Operation that takes only one class.) | Middle click (wheel) to filtrate. (Operation that takes only one class.) | ||
| + | |||
| + | ---- | ||
| + | |||
| + | **Explore Clusters of the Data durch Darstellung ihrer Centroiden in der Projection ** | ||
| + | |||
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| + | Das Feature "Explore Cluster Centroid in Data" ermöglicht es Cluster der Daten zu explorieren. Dabei werden Clusterzentroiden | ||
| + | aus verschiedenen Clusterleveln eines Agglomeratives Hierarchisches Clustering (AHC) | ||
| + | als representaten der Cluster in den Projektioneraum mit abgebildet. | ||
| + | |||
| + | Der on/off Button aktiviert und daktiviert die Clusterzentroiden anzeige. Cluster | ||
| + | werden nur angezeigt wenn der Button aktiv ist (am grünen Seitenbereich erkennbar). | ||
| + | Der Slider ermöglicht es durch unterschiedliche Clusterlevel zu navigieren. | ||
| + | Die Clusteranzeige wird entsprechend automatisch aktualisiert. | ||
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| + | Üblicherweise werden diese Clustercentroiden eigenständig dargestellt, ohne dass die | ||
| + | projezierten Datenpunkte selbst angezeigt werden. | ||
| + | Ist die checkbox "Show Original Points" aktiv, dann werden zeitgleich auch die projezierten Datenpunkte | ||
| + | dargestellt. | ||
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| + | {{:centroids.png?600|}} | ||
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