Namespace
Varianti

std::student_t_distribution

Da cppreference.com.
< cpp‎ | numeric‎ | random

 
 
Numeri libreria
Comuni funzioni matematiche
Virgola mobile ambiente
I numeri complessi
Array numerici
Pseudo-casuale generazione
In fase di compilazione aritmetica razionale (C++11)
Generici operazioni numeriche
Original:
Generic numeric operations
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iota(C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
Pseudo-casuale generazione
Motori e adattatori del motore
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Engines and engine adaptors
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linear_congruential_engine(C++11)
mersenne_twister_engine(C++11)
subtract_with_carry_engine(C++11)
discard_block_engine(C++11)
independent_bits_engine(C++11)
shuffle_order_engine(C++11)
Generatori
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Generators
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random_device(C++11)
Distribuzioni
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Distributions
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Distribuzioni uniformi
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Uniform distributions
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uniform_int_distribution(C++11)
uniform_real_distribution(C++11)
generate_canonical(C++11)
Bernoulli distribuzioni
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Bernoulli distributions
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bernoulli_distribution(C++11)
binomial_distribution(C++11)
negative_binomial_distribution(C++11)
geometric_distribution(C++11)
Poisson distribuzioni
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Poisson distributions
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poisson_distribution(C++11)
exponential_distribution(C++11)
gamma_distribution(C++11)
weibull_distribution(C++11)
extreme_value_distribution(C++11)
Distribuzioni normali
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Normal distributions
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normal_distribution(C++11)
lognormal_distribution(C++11)
chi_squared_distribution(C++11)
cauchy_distribution(C++11)
fisher_f_distribution(C++11)
student_t_distribution(C++11)
Distribuzioni di campionamento
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Sampling distributions
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discrete_distribution(C++11)
piecewise_constant_distribution(C++11)
piecewise_linear_distribution(C++11)
Seed Sequenze
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Seed Sequences
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seed_seq(C++11)
Libreria C
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C library
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rand
srand
RAND_MAX
 
std::student_t_distribution
Membri funzioni
Original:
Member functions
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student_t_distribution::student_t_distribution
student_t_distribution::reset
Generazione
Original:
Generation
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student_t_distribution::operator()
Caratteristiche
Original:
Characteristics
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student_t_distribution::n
student_t_distribution::param
student_t_distribution::min
student_t_distribution::max
Non membri funzioni
Original:
Non-member functions
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operator==
operator!=
operator<<
operator>>
 
Defined in header <random>
template< class RealType = double >
class student_t_distribution;
(dal C++11)
Produce casuali valori a virgola mobile x, distribuiti in base alla funzione di densità di probabilità:
Original:
Produces random floating-point values x, distributed according to probability density function:
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P(x|n) =
1
·
Γ(
n+1
2
)
Γ(
n
2
)
·

1+
x2
n


-
n+1
2

dove n è conosciuto come il numero di gradi di' libertà. Questa distribuzione è utilizzata per la stima della media di un valore sconosciuto normalmente distribuito in n+1 misurazioni indipendenti, ciascuna con errori additivi di sconosciuto deviazione standard, come in misure fisiche. O, in alternativa, il calcolo della media sconosciuta di una distribuzione normale con deviazione standard sconosciuta, campioni n+1 dato.
Original:
where n is known as the number of degrees of freedom. This distribution is used when estimating the mean of an unknown normally distributed value given n+1 independent measurements, each with additive errors of unknown standard deviation, as in physical measurements. Or, alternatively, when estimating the unknown mean of a normal distribution with unknown standard deviation, given n+1 samples.
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Indice

[modifica] Membri tipi

Membro tipo
Original:
Member type
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Definition
result_type RealType
param_type
il tipo di set di parametri, non specificato
Original:
the type of the parameter set, unspecified
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[modifica] Membri funzioni

costruisce nuova distribuzione
Original:
constructs new distribution
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(membro pubblico funzione) [edit]
ripristina lo stato interno della distribuzione
Original:
resets the internal state of the distribution
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(membro pubblico funzione) [edit]
Generazione
Original:
Generation
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genera il successivo numero casuale nella distribuzione
Original:
generates the next random number in the distribution
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(membro pubblico funzione) [edit]
Caratteristiche
Original:
Characteristics
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restituisce la n distribuzione dei parametri (gradi di libertà)
Original:
returns the n distribution parameter (degrees of freedom)
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(membro pubblico funzione) [edit]
ottiene o imposta l'oggetto parametro di distribuzione
Original:
gets or sets the distribution parameter object
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(membro pubblico funzione) [edit]
restituisce il valore minimo potenzialmente generato
Original:
returns the minimum potentially generated value
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(membro pubblico funzione) [edit]
restituisce il valore massimo potenzialmente generato
Original:
returns the maximum potentially generated value
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(membro pubblico funzione) [edit]

[modifica] Non membri funzioni

confronta due oggetti di distribuzione
Original:
compares two distribution objects
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(funzione) [edit]
esegue flusso di ingresso e di uscita sul pseudo-casuale distribuzione numerica
Original:
performs stream input and output on pseudo-random number distribution
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(funzione) [edit]

[modifica] Esempio

[modifica] Collegamenti esterni

Weisstein, Eric W. "Student's t-Distribution." Da MathWorld - Una risorsa Web Wolfram.
Original:
Weisstein, Eric W. "Student's t-Distribution." From MathWorld--A Wolfram Web Resource.
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