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ggplot2 is an open-source data visualization package for the statistical programming language R.Created by Hadley Wickham in 2005, ggplot2 is an implementation of Leland Wilkinson's Grammar of Graphics—a general scheme for data visualization which breaks up graphs into semantic components such as scales and layers. ggplot2 can serve as a replacement for the base graphics in R and contains a ...
Download as PDF; Printable version; In other projects ... This category contains computational problems that have been proved to be PSPACE-complete. Pages in category ...
Word problem for context-sensitive language [35] Intersection emptiness for an unbounded number of regular languages [32] Regular Expression Star-Freeness [36] Equivalence problem for regular expressions [21] Emptiness problem for regular expressions with intersection. [21] Equivalence problem for star-free regular expressions with squaring. [21]
The parents of a 13-year-old girl who was run over by a suicidal driver in Malibu in 2010 are appealing to California Gov. Gavin Newsom to stop the felon from being released on parole.
The first known PSPACE-complete problem was the word problem for deterministic context-sensitive grammars. In the word problem for context-sensitive grammars, one is given a set of grammatical transformations which can increase, but cannot decrease, the length of a sentence, and wishes to determine if a given sentence could be produced by these ...
With new rooms and communal areas, including a coffee bar, lounge, breakfast area, retail space, Champagne display, and a Dior spa, this Italian hotel will certainly be a must-see. Courtesy of Belmond
An alternative characterization of PSPACE is the set of problems decidable by an alternating Turing machine in polynomial time, sometimes called APTIME or just AP. [4]A logical characterization of PSPACE from descriptive complexity theory is that it is the set of problems expressible in second-order logic with the addition of a transitive closure operator.
Republicans believe Trump has a mandate after sweeping all seven swing states and a plurality of the popular vote in November to gut a Washington establishment many voters believe ignored their ...