(Howard) (H.) (AikenGrace) (Hopper) returned 11 hits
1
Harvard's Mark I, the first digital computer, put in service. Officially known as the "IBM Automatic Sequence Controlled Calculator'' (ASCC), the Mark I was 50 feet long and weighed about 5 tons.
Category:
Technology
2
Use of coordinate paper in published research (graph of barometric variations)
Category:
Technology
3
Comparative experimental test of histogram, hanging histogram and hanging rootogram
Category:
Statistics & Graphics
4
"Log Square'' paper ($log y, log x$, for relations which are linear in log scales)
Category:
Technology
5
Experiment showing random permutations of features used in Chernoff's faces affect error rate of classification by about 25 percent
Category:
Statistics & Graphics
6
First modern review of the early history of statistical graphics
Category:
Statistics & Graphics
7
Initial development of geographic information systems, combining spatially-referenced data, spatial models and map-based visualization. Example: Harvard Laboratory for Computer Graphics (and Spatial Analysis) develops SYMAP, producing isoline, choropleth and proximal maps on a line printer
Category:
Cartography
8
"Cartesian rectangle'' to represent 2 x 2 table, experimentally tested against other forms
Category:
Statistics & Graphics
9
Start of true interactive graphics in statistics; PRIM-9, the first system in statistics with 3-D data rotations provided dynamic tools for projecting, rotating, isolating and masking multidimensional data in up to nine dimensions
Category:
Statistics & Graphics
10
Irregular polygon ("star plot'') to represent multivariate data (with vertices at equally spaced intervals, distance from center proportional to the value of a variable) [but see Georg von Mayr in 1877 cite[S. 78]{vonMayr:1877} for first use]
Category:
Statistics & Graphics
11
Use of the "butterfly diagram'' to study the variation of sunspots over time, leading to the discovery that they were markedly reduced in frequency from 1645--1715 (the "Maunder minimum''). [Earlier work, started in 1843 by H. Schwabe, showed that sunspots exhibit an approximately twenty-two year cycle, with each eleven-year cycle of sunspots followed by a reversal of the direction of the sun's magnetic field]
Category:
Statistics & Graphics
