Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!


Index Perplexity

In information theory, perplexity is a measurement of how well a probability distribution or probability model predicts a sample. [1]

12 relations: Brown Corpus, Cross entropy, English language, Entropy (information theory), Information theory, Language model, Natural language processing, Probability distribution, Random variable, Statistical model, Text corpus, Trigram.

Brown Corpus

The Brown University Standard Corpus of Present-Day American English (or just Brown Corpus) was compiled in the 1960s by Henry Kučera and W. Nelson Francis at Brown University, Providence, Rhode Island as a general corpus (text collection) in the field of corpus linguistics.

New!!: Perplexity and Brown Corpus · See more »

Cross entropy

In information theory, the cross entropy between two probability distributions p and q over the same underlying set of events measures the average number of bits needed to identify an event drawn from the set, if a coding scheme is used that is optimized for an "unnatural" probability distribution q, rather than the "true" distribution p. The cross entropy for the distributions p and q over a given set is defined as follows: where H(p) is the entropy of p, and D_(p \| q) is the Kullback–Leibler divergence of q from p (also known as the relative entropy of p with respect to q — note the reversal of emphasis).

New!!: Perplexity and Cross entropy · See more »

English language

English is a West Germanic language that was first spoken in early medieval England and is now a global lingua franca.

New!!: Perplexity and English language · See more »

Entropy (information theory)

Information entropy is the average rate at which information is produced by a stochastic source of data.

New!!: Perplexity and Entropy (information theory) · See more »

Information theory

Information theory studies the quantification, storage, and communication of information.

New!!: Perplexity and Information theory · See more »

Language model

A statistical language model is a probability distribution over sequences of words.

New!!: Perplexity and Language model · See more »

Natural language processing

Natural language processing (NLP) is an area of computer science and artificial intelligence concerned with the interactions between computers and human (natural) languages, in particular how to program computers to process and analyze large amounts of natural language data.

New!!: Perplexity and Natural language processing · See more »

Probability distribution

In probability theory and statistics, a probability distribution is a mathematical function that provides the probabilities of occurrence of different possible outcomes in an experiment.

New!!: Perplexity and Probability distribution · See more »

Random variable

In probability and statistics, a random variable, random quantity, aleatory variable, or stochastic variable is a variable whose possible values are outcomes of a random phenomenon.

New!!: Perplexity and Random variable · See more »

Statistical model

A statistical model is a mathematical model that embodies a set of statistical assumptions concerning the generation of some sample data and similar data from a larger population.

New!!: Perplexity and Statistical model · See more »

Text corpus

In linguistics, a corpus (plural corpora) or text corpus is a large and structured set of texts (nowadays usually electronically stored and processed).

New!!: Perplexity and Text corpus · See more »


Trigrams are a special case of the ''n''-gram, where n is 3.

New!!: Perplexity and Trigram · See more »

Redirects here:

Perplexities, Perplexity consumer.


[1] https://en.wikipedia.org/wiki/Perplexity

Hey! We are on Facebook now! »