Rubin causal model - Revision history

209.6.203.24: /* The fundamental problem of causal inference */

2014-10-23T01:08:30Z

The fundamental problem of causal inference

← Older revision		Revision as of 03:08, 23 October 2014
Line 1:		Line 1:
	~~{{Unreferenced\|date=December 2009}}~~		The author is known as Irwin Wunder but it's not the most masucline title out there. My family lives in Minnesota and my family enjoys it. What I love performing is playing baseball but I haven't produced a dime with it. Bookkeeping is my occupation.<br><br>Feel free to surf to my page :: [http://www.youronlinepublishers.com/authWiki/AudreaocMalmrw www.youronlinepublishers.com]
	A '~~''marked graph''' is a [[Petri net]]~~ in ~~which every place has exactly one incoming arc,~~ and ~~exactly one outgoing arc~~. ~~This means, that there can ''not'' be ''conflict'',~~ but ~~there can be ''concurrency'~~'. ~~Mathematically:~~ <~~math~~>~~\forall p\in P: \|p\bullet\|=\|\bullet p\|=1~~<~~/math~~>~~. Marked graphs are used mostly to mathematically represent concurrently running operations, such as a multiprocessor machine's internal process state.~~

	~~==Uses==~~
	~~Marked graphs are mainly used~~ to ~~mathematically represent concurrent mechanisms, in order~~ to ~~be able to mathematically derive certain characteristics of the design.~~

	~~==Example==~~
	[~~[Image~~:~~Marked Graph example1.png\|400px\|right\|Marked Graph example]]~~
	This example presents a Marked Graph, where a process is [[Fork (operating system)\|forked]] at transition T1 and [[Synchronization point#Data_synchronization\|synchronised]] at T4. In between, two operations take place in non-deterministic fashion, T2 and T3. In fact, Petri nets are so much non-deterministic, that they may not take place at all. But the reason for having this non-deterministic property is not this, but to mimic real-life experiences which shows that parallel computing always means that it is impossible to determine which process/~~thread will finish first i.e~~. ~~which operation(s) will execute faster~~. ~~This can be due to waiting for [[Input~~/~~Output\|I~~/~~O]] in real world, or just the different parameters given to the processes/threads~~.

	~~{{DEFAULTSORT:Marked Graph}}~~
	~~[[Category:Petri nets]~~]

en>Mogism: /* Introduction */Cleanup/Typo fixing, typo(s) fixed: occuring → occurring using AWB

2013-09-22T17:27:52Z

Introduction: Cleanup/Typo fixing, typo(s) fixed: occuring → occurring using AWB

← Older revision		Revision as of 19:27, 22 September 2013
Line 1:		Line 1:
	~~Wilber Berryhill~~ is ~~the name his parents gave him~~ and ~~he totally digs~~ that ~~name. Mississippi is where his house is. What me and my family members adore is to climb~~ but I'~~m considering on beginning something new. Invoicing is my profession~~.<br><br>~~My web page; online psychic reading~~ ([~~http:~~/~~/fashionlinked~~.~~com/index~~.~~php?do=~~/~~profile-13453~~/~~info~~/ ~~fashionlinked~~.~~com~~])		{{Unreferenced\|date=December 2009}}
			A '''marked graph''' is a [[Petri net]] in which every place has exactly one incoming arc, and exactly one outgoing arc. This means, that there can ''not'' be ''conflict'', but there can be ''concurrency''. Mathematically: <math>\forall p\in P: \|p\bullet\|=\|\bullet p\|=1</math>. Marked graphs are used mostly to mathematically represent concurrently running operations, such as a multiprocessor machine's internal process state.

			==Uses==
			Marked graphs are mainly used to mathematically represent concurrent mechanisms, in order to be able to mathematically derive certain characteristics of the design.

			==Example==
			[[Image:Marked Graph example1.png\|400px\|right\|Marked Graph example]]
			This example presents a Marked Graph, where a process is [[Fork (operating system)\|forked]] at transition T1 and [[Synchronization point#Data_synchronization\|synchronised]] at T4. In between, two operations take place in non-deterministic fashion, T2 and T3. In fact, Petri nets are so much non-deterministic, that they may not take place at all. But the reason for having this non-deterministic property is not this, but to mimic real-life experiences which shows that parallel computing always means that it is impossible to determine which process/thread will finish first i.e. which operation(s) will execute faster. This can be due to waiting for [[Input/Output\|I/O]] in real world, or just the different parameters given to the processes/threads.

			{{DEFAULTSORT:Marked Graph}}
			[[Category:Petri nets]]

en>Msalganik: added jstor link to Holland (1986)

2012-09-02T18:24:15Z

added jstor link to Holland (1986)

New page

Wilber Berryhill is the name his parents gave him and he totally digs that name. Mississippi is where his house is. What me and my family members adore is to climb but I'm considering on beginning something new. Invoicing is my profession.<br><br>My web page; online psychic reading ([http://fashionlinked.com/index.php?do=/profile-13453/info/ fashionlinked.com])