Rank Frequency Analysis Research Articles

Rank-Frequency Analysis of Characters in Garhwali Text: Emergence of Zipf's Law

Rank-Frequency Analysis of Characters in Garhwali Text: Emergence of Zipf's Law

Rank-Frequency Analysis of Characters in Garhwali Text: Emergence of Zipf's Law

Zipf's law is ubiquitous in a language system, which establishes a relation between rank and frequency of characters or words. In the present study, it is shown that the distribution of character frequencies for Garhwali language follows Zipf-Mandelbrot law. Garhwali language is an Indo-Aryan language, spoken in the Garhwal region of Uttarakhand, India (northwestern Himalayan belt of India). The present communication examines the rank-frequency distribution by generalization of Zipf-Mandelbrot law in Garhwali language having limited dictionary size. The study shows that the distribution of character frequencies of consonants (with matras), vowels (including vowels with consonants in shape of matras) and all characters (including vowels and consonants without matras) for continuous Garhwali corpus follows Zipf-Mandelbrot law.

<strong>Biodiversity of polychaetous annelids from the peninsula of Cap Bon, northeast coast of Tunisia</strong>

in Tunisia, polychaete studies are very rare (Fauvel 1924 a, b; Westheide 1972; Zibrowius 1970, 1971; Cantone 1978; Ben Amor 1984; Zaâbi & Afli 2005). The aim of this study was to update and fill in gaps in data of polychaetes of Tunisia. Samples were taken aboard the research vessel R/V Hannibal with a Van Veen grab (0.1 m²) and a core (0.009 m²). Nine sites located on the peninsula of Cap Bon on the NE coast of Tunisia, from Sidi Daoud to Ras Lahmer, were sampled in 2005 and 2006. A total of 5,920 individuals in 29 families and 88 species of polychaetes were identified. Twenty-nine species were newly recorded for Tunisia, including the ampharetid Isolda pulchella O.F. Müller, 1858 and the paraonid Aricidea cerrutii (Laubier, 1966). Diversity parameters were established. Abundance and species richness were higher in shallow waters dominated by Protodorvillea kefersteini (McIntosh, 1869) and Malacoceros fuliginosus (Claparède, 1868) than in deep waters where Aponuphis fauveli (Rioja, 1918) and Euclymene palermitana (Grube, 1840) dominated. Multivariate methods, including the Shannon diversity index, cluster analysis, and rank frequency analysis, were used to characterize the spatial structure and temporal variability of the different communities.

Rank-Frequency Analysis for Functional Style Corpora of Ukrainian

We use the rank-frequency analysis for determining the Kernel Vocabulary size within specific corpora of Ukrainian. The extrapolation of high-rank behavior is carried out for the estimation of the total vocabulary size. The entropy has been calculated for different functional styles.

Class dispersion between the Library of Congress Classification and the Dewey Decimal Classification

Two measures are examined that characterize the dispersion of a classification system when mapped to a second classification. One, a distance measure, captures the physical spread of a class when represented in the second system; the second, from rank-frequency analysis, characterizes the scatter of tokens over a set of types. The measures are tested by applying them to the library science portions of the Library of Congress Classification and the Dewey Decimal Classification using a database drawn from MARC records. Class mappings are presented that exemplify four extreme points of the two measures considered together: mappings where both measures score high, mappings where both score low, and mappings where one measure is high and the other is low. The conclusion is that the measures characterize two different properties of dispersion. © 1987 John Wiley & Sons, Inc.