# (Herman) (ChernoffM.) (H.) (Rizvi) returned 9 hits

**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]

1

Experiment showing random permutations of features used in Chernoff's faces affect error rate of classification by about 25 percent

Category:
Statistics & Graphics

2

Discovery of time course of muscle action and nerve impulses by graphical methods.

Category:
Technology

3

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

4

Cartoons of human face to represent multivariate data

Category:
Statistics & Graphics

5

Invention of the punched card for use in a machine to tabulate the USA Census (in 1890). Hollerith's company eventually became IBM

Category:
Technology

6

"Log Square'' paper ($log y, log x$, for relations which are linear in log scales)

Category:
Technology

7

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

8

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

9

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