On Optimal Dimension Reduction in Least-Square System Identification


 
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Old 12-20-2008
On Optimal Dimension Reduction in Least-Square System Identification

HPL-2008-219 On Optimal Dimension Reduction in Least-Square System Identification - Fozunbal, Majid
Keyword(s): Dimension reduction, echo control, least-square methods, manifold learning, and regularization
Abstract: The least-square optimization problem in multi-channel echo control is severely ill-conditioned. Methods to mitigate this problem by decorrelating input signals result in undesired audio distortion. Recently, we demonstrated this approach can be tackled by dimension reduction [1]. In this paper we e ...
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XtConfigureWidget(3Xt)						     MIT X11R4						    XtConfigureWidget(3Xt)

Name
       XtConfigureWidget, XtMoveWidget, XtResizeWidget - move and resize widgets

Syntax
       void XtConfigureWidget(w, x, y, width, height, border_width)
	  Widget w;
	  Position x;
	  Position y;
	  Dimension width;
	  Dimension height;
	  Dimension border_width;

       void XtMoveWidget(w, x, y)
	  Widget w;
	  Position x;
	  Position y;

       void XtResizeWidget(w, width, height, border_width)
	  Widget w;
	  Dimension width;
	  Dimension height;
	  Dimension border_width;

       void XtResizeWindow(w)
	  Widget w;

Arguments
       width
       height
       border_width
		 Specify the new widget size.

       w	 Specifies the widget.

       x
       y	 Specify the new widget x and y coordinates.

Description
       The function returns immediately if the specified geometry fields are the same as the old values.  Otherwise, writes the new x, y, width,
       height, and border_width values into the widget and, if the widget is realized, makes an Xlib call on the widget's window.

       If either the new width or height is different from its old value, calls the widget's resize procedure to notify it of the size change;
       otherwise, it simply returns.

       The function returns immediately if the specified geometry fields are the same as the old values.  Otherwise, writes the new x and y values
       into the widget and, if the widget is realized, issues an Xlib call on the widget's window.

       The function returns immediately if the specified geometry fields are the same as the old values.  Otherwise, writes the new width, height,
       and border_width values into the widget and, if the widget is realized, issues an call on the widget's window.

       If the new width or height are different from the old values, calls the widget's resize procedure to notify it of the size change.

       The function calls the Xlib function to make the window of the specified widget match its width, height, and border width.  This request is
       done unconditionally because there is no way to tell if these values match the current values.  Note that the widget's resize procedure is
       not called.

       There are very few times to use instead, you should use

See Also
       XtMakeGeometryRequest(3Xt), XtQueryGeometry(3Xt)
       X Window System Toolkit: The Complete Programmer's Guide and Specification, Paul J. Asente and Ralph Swick
       X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys

															    XtConfigureWidget(3Xt)