Talk:Projection on Polyhedral Cone - Revision history

Kwokwah: Protected "Talk:Projection on Polyhedral Cone" [edit=autoconfirmed:move=autoconfirmed]

Kwokwah — Thu, 16 Jul 2009 17:40:10 GMT

Protected "Talk:Projection on Polyhedral Cone" [edit=autoconfirmed:move=autoconfirmed]

←Older revision

Revision as of 17:40, 16 July 2009

Kwokwah: Reverted edits by 80.179.205.46 (Talk); changed back to last version by Cslaw

Kwokwah — Thu, 16 Jul 2009 17:39:01 GMT

Reverted edits by 80.179.205.46 (Talk); changed back to last version by Cslaw

←Older revision		Revision as of 17:39, 16 July 2009
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	[http://www.stanford.edu/~boyd/cvxbook/bv_cvxbook.pdf page 447]		[http://www.stanford.edu/~boyd/cvxbook/bv_cvxbook.pdf page 447]
	--[[User:Kwokwah\|Kwokwah]] 01:11, 28 February 2009 (PST)		--[[User:Kwokwah\|Kwokwah]] 01:11, 28 February 2009 (PST)
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-	== 123222 ==
-
-	<a href=http://cleveland.indymedia.org/news/2009/07/50685.php>BUY VIAGRA</a>

80.179.205.46: New section: 123222

80.179.205.46 — Thu, 16 Jul 2009 07:20:08 GMT

New section: 123222

←Older revision		Revision as of 07:20, 16 July 2009
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	[http://www.stanford.edu/~boyd/cvxbook/bv_cvxbook.pdf page 447]		[http://www.stanford.edu/~boyd/cvxbook/bv_cvxbook.pdf page 447]
	--[[User:Kwokwah\|Kwokwah]] 01:11, 28 February 2009 (PST)		--[[User:Kwokwah\|Kwokwah]] 01:11, 28 February 2009 (PST)
		+
		+	== 123222 ==
		+
		+	<a href=http://cleveland.indymedia.org/news/2009/07/50685.php>BUY VIAGRA</a>

Cslaw: Undo revision 1044 by Cslaw (Talk)

Cslaw — Mon, 02 Mar 2009 03:18:53 GMT

Undo revision 1044 by Cslaw (Talk)

←Older revision		Revision as of 03:18, 2 March 2009
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	==Second-order cone==		==Second-order cone==
-	How about second-order cone(or revolution cone), if I want to project a point on it, is ~~[[Convex cones\|~~second-order cone]] program (SOCP) the only choice? --[[User:fisher\|fisher]] 13:47, 28 Feb 2009 (GMT)	+	How about [[Convex cones\|second-order cone]] (or revolution cone), if I want to project a point on it, is second-order cone program (SOCP) the only choice? --[[User:fisher\|fisher]] 13:47, 28 Feb 2009 (GMT)

	===Reply===		===Reply===

Cslaw: /* Second-order cone */

Cslaw — Mon, 02 Mar 2009 03:16:50 GMT

Second-order cone

←Older revision		Revision as of 03:16, 2 March 2009
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	==Second-order cone==		==Second-order cone==
-	How about second-order cone(or revolution cone), if I want to project a point on it, is second-order cone program (SOCP) the only choice? --[[User:fisher\|fisher]] 13:47, 28 Feb 2009 (GMT)	+	How about second-order cone(or revolution cone), if I want to project a point on it, is [[Convex cones\|second-order cone]] program (SOCP) the only choice? --[[User:fisher\|fisher]] 13:47, 28 Feb 2009 (GMT)

	===Reply===		===Reply===

Dattorro at 00:04, 1 March 2009

Dattorro — Sun, 01 Mar 2009 00:04:30 GMT

←Older revision		Revision as of 00:04, 1 March 2009
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	No explicit formula for a solution of a quadratic program exists (or for the solution of a linear program). It is doubtful that such a formula will be found due to the combinatorial nature of the problem.		No explicit formula for a solution of a quadratic program exists (or for the solution of a linear program). It is doubtful that such a formula will be found due to the combinatorial nature of the problem.

-	==Reply==	+	===Reply===
	Yes, the nearest point belonging to the cone.		Yes, the nearest point belonging to the cone.

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	Is there even a formula to project a point on [http://mathworld.wolfram.com/SphericalCone.html spherical cone]? --[[User:fisher\|fisher]] 10:57, 28 Feb 2009 (GMT)		Is there even a formula to project a point on [http://mathworld.wolfram.com/SphericalCone.html spherical cone]? --[[User:fisher\|fisher]] 10:57, 28 Feb 2009 (GMT)

-	==Reply==	+	===Reply===
	Because it is simpler. --[[User:Dattorro\|Dattorro]] 19:28, 27 February 2009 (PST)		Because it is simpler. --[[User:Dattorro\|Dattorro]] 19:28, 27 February 2009 (PST)

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	How about second-order cone(or revolution cone), if I want to project a point on it, is second-order cone program (SOCP) the only choice? --[[User:fisher\|fisher]] 13:47, 28 Feb 2009 (GMT)		How about second-order cone(or revolution cone), if I want to project a point on it, is second-order cone program (SOCP) the only choice? --[[User:fisher\|fisher]] 13:47, 28 Feb 2009 (GMT)

-	==Reply==	+	===Reply===
	That projection problem has a known closed-form solution.		That projection problem has a known closed-form solution.
	[http://www.stanford.edu/~boyd/cvxbook/bv_cvxbook.pdf page 447]		[http://www.stanford.edu/~boyd/cvxbook/bv_cvxbook.pdf page 447]
	--[[User:Kwokwah\|Kwokwah]] 01:11, 28 February 2009 (PST)		--[[User:Kwokwah\|Kwokwah]] 01:11, 28 February 2009 (PST)

Dattorro: /* Reply */

Dattorro — Sun, 01 Mar 2009 00:02:26 GMT

←Older revision		Revision as of 00:02, 1 March 2009
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	==Reply==		==Reply==
-	Because ~~I thought~~ it ~~would be~~ simpler. --[[User:Dattorro\|Dattorro]] 19:28, 27 February 2009 (PST)	+	Because it is simpler. --[[User:Dattorro\|Dattorro]] 19:28, 27 February 2009 (PST)

	==Second-order cone==		==Second-order cone==

Kwokwah at 21:21, 28 February 2009

Kwokwah — Sat, 28 Feb 2009 21:21:55 GMT

←Older revision		Revision as of 21:21, 28 February 2009
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	==Second-order cone==		==Second-order cone==
	How about second-order cone(or revolution cone), if I want to project a point on it, is second-order cone program (SOCP) the only choice? --[[User:fisher\|fisher]] 13:47, 28 Feb 2009 (GMT)		How about second-order cone(or revolution cone), if I want to project a point on it, is second-order cone program (SOCP) the only choice? --[[User:fisher\|fisher]] 13:47, 28 Feb 2009 (GMT)
-
-	==reply==
-	That projection problem has a known closed-form solution. --[[User:Kwokwah\|Kwokwah]] 01:11, 28 February 2009 (PST)

	==Reply==		==Reply==
-	~~Thank you for your kindly reply. To my best knowledge, I don't know what that~~ closed-form solution is. ~~So, would you please kindly point it out? Thanks!~~	+	That projection problem has a known closed-form solution.
-	--[[User:~~fisher~~\|~~fisher~~]] 17:54, 28 ~~Feb~~ 2009 (~~GMT~~)	+	[http://www.stanford.edu/~boyd/cvxbook/bv_cvxbook.pdf page 447]
		+	--[[User:Kwokwah\|Kwokwah]] 01:11, 28 February 2009 (PST)

Fisher at 09:55, 28 February 2009

Fisher — Sat, 28 Feb 2009 09:55:27 GMT

←Older revision		Revision as of 09:55, 28 February 2009
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	==reply==		==reply==
	That projection problem has a known closed-form solution. --[[User:Kwokwah\|Kwokwah]] 01:11, 28 February 2009 (PST)		That projection problem has a known closed-form solution. --[[User:Kwokwah\|Kwokwah]] 01:11, 28 February 2009 (PST)
		+
		+	==Reply==
		+	Thank you for your kindly reply. To my best knowledge, I don't know what that closed-form solution is. So, would you please kindly point it out? Thanks!
		+	--[[User:fisher\|fisher]] 17:54, 28 Feb 2009 (GMT)

Kwokwah at 09:11, 28 February 2009

Kwokwah — Sat, 28 Feb 2009 09:11:31 GMT

←Older revision		Revision as of 09:11, 28 February 2009
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	==Second-order cone==		==Second-order cone==
	How about second-order cone(or revolution cone), if I want to project a point on it, is second-order cone program (SOCP) the only choice? --[[User:fisher\|fisher]] 13:47, 28 Feb 2009 (GMT)		How about second-order cone(or revolution cone), if I want to project a point on it, is second-order cone program (SOCP) the only choice? --[[User:fisher\|fisher]] 13:47, 28 Feb 2009 (GMT)
		+
		+	==reply==
		+	That projection problem has a known closed-form solution. --[[User:Kwokwah\|Kwokwah]] 01:11, 28 February 2009 (PST)