File:Bound on matrix multiplication omega over time.svg

Summary

Description
English: The bound on the matrix multiplication exponent ω over time. Based on the account given in the introduction of Williams' paper.


Breaking the Coppersmith-Winograd barrier, 2011
Date
Source Own work
Author Self
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SVG development
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Source code
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Mathematica code

plotRange = {{1950, 2015}, {2.32, 3.01}};
data = {{1950, 3}, {1968, 3}, {1969, 2.808}, {1978, 2.796}, {1979, 2.78}, {1980.5, 2.522}, {1981, 2.517}, {1981.5, 2.496}, {1986, 2.479}, {1990, 2.376}, {2010, 2.374}, {2012, 2.373}};
dataPlot = ListPlot[data, Joined -> True, Mesh -> All, PlotRange -> plotRange];
labelData = {{"naive", {1959, 2.985}}, {"Strassen", {1964, 2.825}}, {"Pan", {1976, 2.815}}, {"Bini et al.", {1985.5, 2.78}}, {"Schönhage", {1974, 2.53}}, {"Romani", {1986, 2.52}}, {"Coppersmith-Winograd", {1967.5, 2.49}}, {"Strassen", {1991.3, 2.48}}, {"Coppersmith-Winograd", {1975.5, 2.393}}, {"Stothers", {2005, 2.39}}, {"Williams", {2010, 2.36}}};
labels = Text[#[[1]], #[[2]]] & /@ labelData;
Show[dataPlot, Graphics[{Black, labels}], PlotRange -> plotRange, GridLines -> Automatic, GridLinesStyle -> Directive[Opacity[0.6], Dashed], AxesLabel -> {"Year", "\[Omega]"}, AspectRatio -> 1]
After saving the file to an SVG, edit the raw SVG to (1) always use the Times font, (2) improve the placement of labels including merging each label in to a single text tag, and (3) add "width='360' height='340'" to the end of the SVG tag. The 2014 bound was also added by manual edition of the SVG (so it is not reflected in the above code).

Licensing

I, the copyright holder of this work, hereby publish it under the following license:
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The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

Category:CC-Zero#Bound%20on%20matrix%20multiplication%20omega%20over%20time.svg
Category:Self-published work Category:Images with Mathematica source code Category:Matrix multiplication Category:Terry Winograd (computer scientist) Category:Polynomial-time problems
Category:CC-Zero Category:Images with Mathematica source code Category:Matrix multiplication Category:Polynomial-time problems Category:Self-published work Category:Terry Winograd (computer scientist) Category:Valid SVG created with Mathematica code:Diagrams