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In the Romanian Naval Forces, Aspirant is the lowest commissioned rank, equivalent to the rank of Ensign.
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In linear algebra, the rank of a matrix A is the dimension of the vector space generated by its columns. This corresponds to the maximal number of linearly independent columns of A. This, in turn, is identical to the dimension of the vector space spanned by its rows. Rank is thus a measure of the "nondegenerateness" of the system of linear equations and linear transformation encoded by A. There are multiple equivalent definitions of rank. A matrix's rank is one of its most fundamental characteristics.
In biological classification, a subfamily is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zoological subfamily names with "-inae".
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same.
In statistics, Spearman's rank correlation coefficient or Spearman's ρ, named after Charles Spearman and often denoted by the Greek letter (rho) or as , is a nonparametric measure of rank correlation. It assesses how well the relationship between two variables can be described using a monotonic function.
In mathematics, a vector bundle is a topological construction that makes precise the idea of a family of vector spaces parameterized by another space : to every point of the space we associate a vector space in such a way that these vector spaces fit together to form another space of the same kind as , which is then called a vector bundle over .
Oberstleutnant is a senior field officer rank in several German-speaking and Scandinavian countries, equivalent to lieutenant colonel. It is currently used by both the ground and air forces of Austria, Germany, Switzerland, Denmark, and Norway. The Swedish rank överstelöjtnant is a direct translation, as is the Finnish rank everstiluutnantti.
Naik is an Indian Army, Pakistan Army and Bangladesh Police rank equivalent to corporal. The rank was previously used in the Indian Army during the Raj and the Camel Corps, ranking between lance naik and havildar. In cavalry units, the equivalent is lance daffadar. Like a British corporal, a naik wears two rank chevrons.
Oberleutnant is the highest lieutenant officer rank in the German-speaking armed forces of Germany (Bundeswehr), the Austrian Armed Forces, and the Swiss Armed Forces.
Generalmajor is the Germanic variant of major general, used in a number of Central and Northern European countries.
The NatureServe conservation status system, maintained and presented by NatureServe in cooperation with the Natural Heritage Network, was developed in the United States in the 1980s by The Nature Conservancy (TNC) as a means for ranking or categorizing the relative imperilment of species of plants, animals, or other organisms, as well as natural ecological communities, on the global, national or subnational levels. These designations are also referred to as NatureServe ranks, NatureServe statuses, or Natural Heritage ranks. While the Nature Conservancy is no longer substantially involved in the maintenance of these ranks, the name TNC ranks is still sometimes encountered for them.
The Wilcoxon signed-rank test is a non-parametric statistical hypothesis test used either to test the location of a population based on a sample of data, or to compare the locations of two populations using two matched samples. The one-sample version serves a purpose similar to that of the one-sample Student's t-test. For two matched samples, it is a paired difference test like the paired Student's t-test. The Wilcoxon test can be a good alternative to the t-test when population means are not of interest; for example, when one wishes to test whether a population's median is nonzero, or whether there is a better than 50% chance that a sample from one population is greater than a sample from another population.
The Military ranks of Tanzania are the military insignia used by the Tanzania People's Defence Force. Being a former British colony, Tanzania shares a rank structure similar to that of the United Kingdom.
Major is the lowest staff officer rank in the German Army, German Air Force. The rank is rated OF-3 in NATO. The rank insignia is a silver oakleaf cluster with a silver pip (star).
ESPN PPV is the banner for pay-per-view events produced by ESPN. The service primarily serves as the distributor for ESPN College Extra, an out-of-market sports package that carries college basketball and football events. The service was originally launched in 1999 as ESPN Extra SkyREPORT.COM News and was renamed ESPN PPV in 2001.
The U.S. Army enlisted rank insignia that was used during World War II differs from the current system. The color scheme used for the insignia's chevron design was defined as golden olive drab chevrons on a dark blue-black wool background for wear on "winter" uniform dress coats and dress shirts or silvery-khaki chevrons on a dark blue-black cotton background for wear on the various types of field jackets and "winter" uniform fatigue shirts. An unauthorized variant that nevertheless saw wide use was olive drab chevrons on a khaki cotton background for wear on the "summer" uniform dress coats and dress shirts. This scheme of rank insignia was established by War Department Circular No. 303 on 5 August 1920 and would see two significant changes in 1942. The usage of this style of insignia was ended by Department of the Army Circular No. 202, dated 7 July 1948, which provided for significant changes in both rank and insignia design.
In statistics, the Kendall rank correlation coefficient, commonly referred to as Kendall's τ coefficient, is a statistic used to measure the ordinal association between two measured quantities. A τ test is a non-parametric hypothesis test for statistical dependence based on the τ coefficient. It is a measure of rank correlation: the similarity of the orderings of the data when ranked by each of the quantities. It is named after Maurice Kendall, who developed it in 1938, though Gustav Fechner had proposed a similar measure in the context of time series in 1897.
Mirliva or Mîr-i livâ was a military rank of the Ottoman Army and Navy. It corresponds to a brigadier general in the modern Turkish Army. Mirliva is a compound word composed of Mir (commander) and Liva. The rank was junior to the Ferik and superior to the rank Miralay in the Ottoman Army and the pre-1934 Turkish Army.
PageRank (PR) is an algorithm used by Google Search to rank web pages in their search engine results. It is named after both the term "web page" and co-founder Larry Page. PageRank is a way of measuring the importance of website pages. According to Google:
PageRank works by counting the number and quality of links to a page to determine a rough estimate of how important the website is. The underlying assumption is that more important websites are likely to receive more links from other websites.
The Military ranks of Philippines are the military insignia used by the Armed Forces of the Philippines.
The PageRank algorithm has several applications in biochemistry.