People use language principally as a means of communication, each language community determining the scope of the particular language it uses. Within the language, various sets and subsets may exist depending upon regional and social differences. Most studies of such subsets have been concerned with lexical variations. In this paper, a methodology is outlined by which the frequency usage of syn...

Though commonly used, the unigram is widely known as being a poor model of term frequency; it assumes that term occurrences are independent, whereas many words, especially topic-oriented ones, tend to occur in bursts. Herein, we propose a model of term frequency that treats words independently, but allows for much higher variance in frequency values than does the unigram. Although it has valuab...

Suppletion is where the word-forms of the same lexeme have phonologically distinct stems. A study of thirty languages shows it to be surprisingly widespread, suggesting resistance to the pressure of paradigmatic levelling. While a major factor in its preservation appears to be the high frequency of the items that display it, two other factors are in operation, the type of inflectional category ...

The availability of high frequency data sets in finance has allowed the use of very data intensive techniques using large data sets in forecasting. An algorithm requiring fast k-NN type search has been implemented using AURA, a binary neural network based upon Correlation Matrix Memories. This work has also constructed probability distribution forecasts, the volume of data allowing this to be d...

Thunderstorms are spectacular but hazardous weather phenomena which, together with tropical cyclones and bushfires, top the list of concerns in the Bureau of Meteorology’s Severe Weather Warning Services Program. Insurance-related claims arising from thunderstorms (wind, hail and flash flood damage) from 1967 to 1999 amount to about $A5 billion (Insurance Council of Australia 2000). The Sydney ...

The allele frequency of a neutral variant in a population is pushed either upward or downward by directional selection on a linked beneficial mutation ("selective sweeps"). DNA sequences sampled after the fixation of the beneficial allele thus contain an excess of rare neutral alleles. This study investigates the allele frequency distribution under selective sweep models using analytic approxim...

Relative frequencies of mechanically stable (MS) packings of frictionless bidisperse disks are studied numerically in small systems. The packings are created by successively compressing or decompressing a system of soft purely repulsive disks, followed by energy minimization, until only infinitesimal particle overlaps remain. For systems of up to 14 particles, most of the MS packings were gener...

A standardised botanical survey technique was used to investigate sources of variation in botanical surveys used to produce distribution maps and assess species frequency, The most significant sources of variation between visits were the individual botanists; the number of habitats visited and length of route recorded also explained some variation. The number of records for each species increas...

Due to the non-stationary, multicomponent nature of biomedical signals, the use of time-frequency analysis can be inevitable for these signals. The choice of the proper time-frequency distribution (TFD) that can reveal the exact multicomponent structure of biological signals is vital in many applications, including the diagnosis of medical abnormalities. In this paper, the instantaneous frequen...