b applications. In probability theory and statistics, the Laplace distribution is a continuous probability distribution named after Pierre-Simon Laplace. The variance, skewness, and excess kurtosis can be calculated from these raw moments. One may introduce generalised Kuramaswamy distributions by considering rand… I use WIKI 2 every day and almost forgot how the original Wikipedia looks like. 1 0 The inverse cumulative distribution function (quantile function) is. [2]. In probability and statistics, the Kumaraswamy's double bounded distribution is a family of continuous probability distributions defined on the interval (0,1). {\displaystyle Y_{\alpha ,\beta }} He developed the double bounded probability density function (Kumaraswamy distribution). Si X suit une loi de Burr (ou Singh-Maddala), on notera , with where = Kumaraswamy introduced a distribution for double bounded random processes with hydrological. Since I cannot write dkumar, pkumar, etc. It is a multivariate generalization of the beta distribution, hence its alternative name of multivariate beta distribution (MBD). {\displaystyle \beta =b} In each case, a re-parametrization of the usual form of the family of gamma distributions is used, such that the parameters are: A product distribution is a probability distribution constructed as the distribution of the product of random variables having two other known distributions. This W3C-unspecified plot was created with Gnu plot. α and where a and b are non-negative shape parameters. Journal of Hydrology 182: 259-275. Kumaraswamy distribution. The Chief Minister of Karnataka, Shri H.D. Hydrology. denotes the Gamma function. In 2008, she bought the rights of her film Ishwar, which was launched in 2007 as Narasimha, and revived it, although she was unsuccessful in releasing it. One may introduce generalised Kumaraswamy distributions by considering random variables of the form It is frequently encountered in Bayesian statistics, machine learning, empirical Bayes methods and classical statistics as an overdispersed multinomial distribution. WikiProject Statistics (Rated Start-class, Low-importance) ... a collaborative effort to improve the coverage of statistics on Wikipedia. To install click the Add extension button. If you would like to participate, please visit the project page or join the discussion. From formulasearchengine. Data analysis in hydrology Environmental amp Energy Education. It is the continuous analogue of the geometric distribution, and it has the key property of being memoryless. Jump to navigation Jump to search. English: Kumaraswamy cumulative distribution function. A random variable is said to be stable if its distribution is stable. Kumaraswamy distribution. Multiple Random Variables and Joint Distributions. Radhika Kumaraswamy (Born 1 November 1986), ... She has acquired the distribution rights of her own film Anatharu (2007), co-starring Upendra and Darshan. Y has a Weibull distribution, if and . One has the following relation between Xa,b and Y1,b. This distribution was originally proposed by Poondi Kumaraswamy[1] for variables that are lower and upper bounded with a zero-inflation. In probability and statistics, the Kumaraswamy's double bounded distribution is a family of continuous probability distributions defined on the interval [0,1]. and where It is similar to the Beta distribution, but much simpler to use especially in simulation studies since its probability density function, cumulative distribution function and quantile functions can be expressed in closed form. There are three different parametrizations in common use: In probability theory and statistics, the F-distribution, also known as Snedecor's F distribution or the Fisher–Snedecor distribution is a continuous probability distribution that arises frequently as the null distribution of a test statistic, most notably in the analysis of variance (ANOVA), e.g., F-test. Born on 11 November 1986, Radhika is a 31 years old girl from Mangalore, Karnataka. She is famous as a wife of the 24th Chief Minister of Karnataka H. D. Kumaraswamy. However, in general, the cumulative distribution function does not have a closed form solution. Topics similar to or like Kumaraswamy distribution. The density of the Benini distribution is given by .. math:: f(x) := e^ Wikipedia's Kumaraswamy distribution as translated by GramTrans. It is also sometimes called the double exponential distribution, because it can be thought of as two exponential distributions spliced together back-to-back, although the term is also sometimes used to refer to the Gumbel distribution. The Kumaraswamy distribution was developed by Indian hydrologist Poondi Kumaraswamy in a paper published in 1980 as a generalized distribution suitable for describing hydrological random variables not typically well-served by classical or empirical probability distributions. The distribution arises by compounding two gamma distributions. Y = “Estimation of reservoir yield and storage distribution using moments analysis”. Assume that Xa,b is a Kumaraswamy distributed random variable with parameters a and b. Random Functions and Hydrology Kumaraswamy distribution. Kumaraswamy distribution Wikipedia. By the extreme value theorem the GEV distribution is the only possible limit distribution of properly normalized maxima of a sequence of independent and identically distributed random variables. Install it from pip (kumaraswamy only depends on numpy)pip install kumaraswamy and it’s ready to use from Python. It is also known, especially among physicists, as the Lorentz distribution, Cauchy–Lorentz distribution, Lorentz(ian) function, or Breit–Wigner distribution. In probability theory and statistics, the beta prime distribution is an absolutely continuous probability distribution defined for with two parameters α and β, having the probability density function: In probability theory and statistics, the Dirichlet-multinomial distribution is a family of discrete multivariate probability distributions on a finite support of non-negative integers. Perhaps the chief use of the inverse gamma distribution is in Bayesian statistics, where the distribution arises as the marginal posterior distribution for the unknown variance of a normal distribution, if an uninformative prior is used, and as an analytically tractable conjugate prior, if an informative prior is required. Radhika Kumaraswamy is an Indian actress, and producer. α 1 The Pareto principle or "80-20 rule" stating that 80% of outcomes are due to 20% of causes was named in honour of Pareto, but the concepts are distinct, and only Pareto distributions with shape value of log45 ≈ 1.16 precisely reflect it. > A ratio distribution is a probability distribution constructed as the distribution of the ratio of random variables having two other known distributions. The Cauchy distribution is the distribution of the x-intercept of a ray issuing from with a uniformly distributed angle. This W3C-unspecified plot was created with Gnu plot. β La loi Kumaraswamy est très proche de la loi bêta ; les formules de ses fonctions de densité et de répartition sont plus faciles à utiliser. En théorie des probabilités et en statistique, la loi de Gompertz est une distribution de probabilité continue. – Wikipedia.org. The Kuramaswamy distribution is closely related to Beta distribution. The Kumaraswamy distribution is closely related to Beta distribution. i If X is a random variable with a Pareto distribution, then the probability that X is greater than some number x is given by. – Wikipedia.org. This month marks P Kumaraswamy’s 80th birth anniversary and this article is a series to honor this great scientist. Y ... Special case of the Dirichlet distribution. Date: 10 March 2013, 08:45:35: Source: Own work: Author: Krishnavedala: The source code of this SVG is valid. The Fréchet distribution, also known as inverse Weibull distribution, is a special case of the generalized extreme value distribution. The Cauchy distribution, named after Augustin Cauchy, is a continuous probability distribution. Cordeiro and M. de Castro. [6] and where a and b are non-negative shape parameters. “Estimation of reservoir yield and storage distribution using moments analysis”. For example, the variance is: The Shannon entropy (in nats) of the distribution is:[5]. Kumaraswamy distribution. The generalization to multiple variables is called a Dirichlet distribution. Share. One has the following relation between Xa,b and Y1,b. Jump to navigation Jump to search {{#invoke:Hatnote|hatnote}} Template:Probability distribution In probability and statistics, the Kumaraswamy's double bounded distribution is a family of continuous probability distributions defined on the interval [0,1] differing in the values of their two non -negative shape parameters, a and b. It will enhance any encyclopedic page you visit with the magic of the WIKI 2 technology. import kumaraswamy. and def Benini (name, alpha, beta, sigma): r""" Create a Continuous Random Variable with a Benini distribution. It has the cumulative distribution function. b Note that a limit distribution need to exist, which requires regularity conditions on the tail of the distribution. In probability and statistics, the Kumaraswamy's double bounded distribution is a family of continuous probability distributions defined on the interval (0,1). . In probability theory and statistics, the exponential distribution is the probability distribution of the time between events in a Poisson point process, i.e., a process in which events occur continuously and independently at a constant average rate. Fletcher, S.G., and Ponnambalam, K. (1996). How to use. This distribution is in use in electrical, civil, mechanical, and financial engineering applications. In addition to being used for the analysis of Poisson point processes it is found in various other contexts. It is similar to the Beta distribution, but much simpler to use especially in simulation studies due to the simple closed form of both its probability density function and cumulative distribution function. En théorie des probabilités, en statistique et en économétrie, la loi de Burr, loi de Burr de type XII, loi de Singh-Maddala, ou encore loi log-logistisque généralisée est une loi de probabilité continue dépendant de deux paramètres réels positifs c et k.Elle est communément utilisée pour étudier les revenus des ménages. The arcsine distribution on [a,b], which is a special case of the Beta distribution if α=β=1/2, a=0, and b = 1. By default, it uses Kumar Warping (CDF of Kumaraswamy distribution) X : array_like, shape = (n_samples, n_features) for input data. In September 2007, Kumaraswamy started the Kannada television channel Kasturi. We have created a browser extension. Increments of Laplace motion or a variance gamma process evaluated over the time scale also have a Laplace distribution. This month marks P Kumaraswamy’s 80th birth anniversary and this article is a series to honor this great scientist. Kumaraswamy distribution. The exponential distribution, Erlang distribution, and chi-squared distribution are special cases of the gamma distribution. ”Transformed symmetric models”, Statistical Modelling, 2011. Ponnambalam Kumaraswamy (often referred to as Poondi Kumaraswamy) (October 4, 1930 - March 9, ... among others. = Dear R users, Does anyone know how to write function for Kumaraswamy distribution in R? Kumaraswamy distribution Where do you meet this distribution? In probability and statistics, the Kumaraswamy's double bounded distribution is a family of continuous probability distributions defined on the interval (0,1). He developed the double bounded probability density function (Kumaraswamy distribution). The variance, skewness, and excess kurtosis can be calculated from these raw moments. It is also the distribution of the ratio of two independent normally distributed random variables with mean zero. Licensing . Hardanahalli Devegowda Kumaraswamy (born 16 December 1959) is an Indian politician and businessman who is the former Chief Minister of Karnataka.He is a former president of the Karnataka State Janata Dal (Secular) and son of former Prime Minister of India H. D. Deve Gowda.. Kumaraswamy has served two terms as the Chief Minister of Karnataka–2006 to 2007 and 2018 to 2019. It is a stable distribution. 1 Introduction We introduce a new five-parameter distribution, so-called generalized Kumaraswamy (GKw) distribution, which contains some well-known distributions as special sub-modelsas, for example, the Kumaraswamy (Kw) and beta (B) distributions. Kumaraswamy is into film production and distribution. English: Kumaraswamy cumulative distribution function. The raw moments of this generalized Kumaraswamy distribution are given by: Note that we can re-obtain the original moments setting α=1{\displaystyle \alpha =1}, β=b{\displaystyle \beta =b} and γ=a{\displaystyle \gamma =a}. Radhika is one of the most talented actresses of South Indian cinema, who faced severe challenges in her life. In probability theory, a beta negative binomial distribution is the probability distribution of a discrete random variable X equal to the number of failures needed to get r successes in a sequence of independent Bernoulli trials where the probability p of success on each trial, while constant within any given experiment, is itself a random variable following a beta distribution, varying between different experiments. E.g., the variance of a Cauchy distribution is infinity. , The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. Kumaraswamy distribution. Probability distribution name =Kumaraswamy type =density pdf_ cdf_ parameters = a>0, b>0, Beta distribution. Start This article has been rated as Start-Class on the quality scale. In probability theory and statistics, the gamma distribution is a two-parameter family of continuous probability distributions. Family of continuous probability distributions defined on the interval . Apart from acting in different South Indian films, Radhika also produced some films like ‘Anathary,’ and ‘Narasimha.’ In 2017, she appeared in a TV show- ‘Dance Dance Juniors’ (aired on Star Suvarna Plus channel) as a judge. Journal of Hydrology 182: 259-275. Kumaraswamy meeting the Union Minister for Consumer Affairs, Food and Public Distribution, Shri Ram Vilas Paswan, in New Delhi on July 17, 2018 (1).JPG 2,040 × 1,144; 415 KB The attached Kumaraswamy.stan file estimates the parameters of this distribution in a computationally efficient fashion: / In probability theory, to obtain a nondegenerate limiting distribution of the extreme value distribution, it is necessary to "reduce" the actual greatest value by applying a linear transformation with coefficients that depend on the sample size. 1 In probability theory and statistics, the inverse gamma distribution is a two-parameter family of continuous probability distributions on the positive real line, which is the distribution of the reciprocal of a variable distributed according to the gamma distribution. In a more general form, the normalized variable x is replaced with the unshifted and unscaled variable z where: The raw moments of the Kumaraswamy distribution are given by: [3] [4]. In teoria della probabilità la distribuzione di Kumaraswamy è una distribuzione di probabilità continua, definita sull'intervallo [0,1] e dipendente da due paramentri. The inverse cumulative distribution function (quantile function) is. It is similar to the Beta distribution, but much simpler to use especially in simulation studies since its probability density function, cum Her another famous name is Kutty Radhika. Kumaraswamy was interested in distributions for hydrological random variables and actually proposed a mixture of a probability mass, F 0, at zero and density over (0, 1), although I am using the terminology ”Kumaraswamy’s distribution” to refer solely to the latter. β He has produced several Kannada films including Chandra Chakori, a huge hit, credited with 365 day-run in theaters. In its simplest form, the distribution has a support of (0,1). Continuous uniform distribution. α Scala Library/REPL for Machine Learning Research. denotes the Gamma function. Dirichlet distributions are commonly used as prior distributions in Bayesian statistics, and in fact the Dirichlet distribution is the conjugate prior of the categorical distribution and multinomial distribution. He was elected a Fellow of the Indian Academy of Sciences in 1972[3] although his only formal education was a Civil Engineering degree… But is there a way to do the same thing along a circle, that > is in connecting the two extremes > > Has some one the answer ? [2], The probability density function of the Kumaraswamy distribution without considering any inflation is. where B is the Beta function and Γ(.) ”The Kumaraswamy generalized gamma distribution with application in survival analysis”, Statistical Methodology, 2011. Y : array_like, shape = (n_samples, 1) for output data. The Pareto distribution, named after the Italian civil engineer, economist, and sociologist Vilfredo Pareto,, is a power-law probability distribution that is used in description of social, quality control, scientific, geophysical, actuarial, and many other types of observable phenomena. H CHAPTER 4 SCALING AND FRACTALS IN HYDROLOGY. Shape of Distribution Basic Properties Wikipedia. More formally, Let Y1,b denote a Beta distributed random variable with parameters α=1{\displaystyle \alpha =1} and β=b{\displaystyle \beta =b}. Hydrology. , However, sometimes the statistic is undefined, e.g., if a distribution's pdf does not achieve a maximum within the support of the distribution, the mode is undefined. Controversies Then Xa,b is the a-th root of a suitably defined Beta distributed random variable. It is a particular case of the gamma distribution. This vertical line is the line of symmetry of the distribution. β [2], The probability density function of the Kumaraswamy distribution without considering any inflation is. γ Empirical observation has shown that this 80-20 distribution fits a wide range of cases, including natural phenomena and human activities. The compounding corresponds to a Pólya urn scheme. Licensing . In its simplest form, the distribution has a support of (0,1). The Kumaraswamy distribution resembles the beta distribution. Fletcher, S.G., and Ponnambalam, K. (1996). is the harmonic number function. It is similar to the Beta distribution, but much simpler to use especially in simulation studies due to the simple closed form of both its probability density function and cumulative distribution function. This was extended to inflations at both extremes [0,1] in. In probability and statistics, the Dirichlet distribution, often denoted , is a family of continuous multivariate probability distributions parameterized by a vector of positive reals. Kumaraswamy distribution, a distribution form related to probability theory and statistics; K. Kamaraj (1903–1975), full name Kumaraswami Kamaraj, Indian politician known as a kingmaker; Kumaraswamy Nandagopan, leader of the Tamil Makkal Viduthalai Pulikal; This disambiguation page lists articles associated with the same title. and In a more general form, the normalized variable x is replaced with the unshifted and unscaled variable z where: The raw moments of the Kumaraswamy distribution are given by:[3][4]. {\displaystyle \gamma >0} a An exponential distribution is a special case of a gamma distribution with α = 1 (or k = 1 depending on the parameter set used). This distribution was originally proposed by Poondi Kumaraswamy [1] for variables that are lower and upper bounded with a zero-inflation. More formally, Let Y1,b denote a Beta distributed random variable with parameters and . More formally, Let Y1,b denote a Beta distributed random variable with parameters . توزیع ماکسول–بولتزمن (به انگلیسی: Maxwell–Boltzmann distribution) در فیزیک و بویژه در مکانیک آماری، تابعی است که توزیع سرعت ذرات را در گاز مشخص می‌کند. For example, the variance is: The Shannon entropy (in nats) of the distribution is: [5]. This defines a GP model that applies a warping function to the Input. reduced version of my CV at cv Thu 14 Jun 2018 07 12 00. with equality in distribution. Kumaraswamy distribution Where do you meet this distribution? Thus the distribution is a compound probability distribution. and in R. Please help. Given two random variables X and Y, the distribution of the random variable Z that is formed as the ratio Z = X/Y is a ratio distribution. Random Functions and Hydrology Dover Books on Advanced. Properties. In statistics, a symmetric probability distribution is a probability distribution — an assignment of probabilities to possible occurrences — which is unchanged when its probability density function or probability mass function is reflected around a vertical line at some value of the random variable represented by the distribution. , Originally applied to describing the distribution of wealth in a society, fitting the trend that a large portion of wealth is held by a small fraction of the population. The Kumaraswamy distribution is closely related to Beta distribution. An example of the use of the Kumaraswamy distribution is the storage volume of a reservoir of capacity z whose upper bound is zmax and lower bound is 0, which is also a natural example for having two inflations as many reservoirs have nonzero probabilities for both empty and full reservoir states.[2]. Kumaraswamy distribution is another bounded continuous distribution, but it would be harder to re-parametrize like above. In spectroscopy, this distribution, with frequency as the dependent variable, is known as a van der Waals profile. In probability and statistics, the Kumaraswamy's double bounded distribution is a family of continuous probability distributions defined on the interval (0,1). Family of continuous probability distributions defined on the interval . Wikipedia. γ In probability theory and statistics, the generalized extreme value (GEV) distribution is a family of continuous probability distributions developed within extreme value theory to combine the Gumbel, Fréchet and Weibull families also known as type I, II and III extreme value distributions. Inverse-gamma distribution. In probability and statistics, the Kumaraswamy's double bounded distribution is a family of continuous probability distributions defined on the interval (0,1). Generalizing to arbitrary interval support, Generalizing to arbitrary interval support, generalized beta distribution of the first kind. Kumaraswamy Distribution: Miller, Frederic P., Vandome, Agnes F., McBrewster, John: Amazon.com.au: Books In probableso teorie e statistike, li Bernoulli distributione, nomat segun suisi sientiiste Jakob Bernoulli, es diskreti probableso distributione, kel have valore 1 kun probableso e valore 0 kun probableso de falio = −.Dunke si X es hasardal variable kun disi distributione, nus have: (=) =− (=) =. Congratulations on this excellent venture… what a great idea! Check out Radhika wiki, height, weight, age, husband, caste, family, biography and more. [6] Assume that Xa,b is a Kumaraswamy distributed random variable with parameters a and b. It will enhance any encyclopedic page you visit with the magic of the WIKI 2 technology. {\displaystyle H_{i}} If $ X \sim {\rm U}(0, 1]\, $ has a uniform distribution, then $ X^2 \sim {\rm Beta}(1/2,1) \ $ or for the 4 parameter case, $ X^2 \sim {\rm Beta}(0,1,1/2,1) \ $ which is a special case of the Beta distribution called the power-function distribution. = Droit d'auteur: les textes sont disponibles sous licence Creative Commons attribution, partage dans les mêmes conditions; d’autres conditions peuvent s’appliquer.Voyez les conditions d’utilisation … Kumaraswamy Distribution. tion; Kumaraswamy distribution; Maximum likelihood; McDonald Distribution; Moments. Stan supports many probability distributions and more are always being added. For any continuous baseline G distribution, G.M. He developed also the double bounded probability density function (Kumaraswamy distribution), a probability density function suitable for physical variables that are usually bounded. However, in general, the cumulative distribution function does not have a closed form solution. You could also do it yourself at any point in time. α If the probability distribution you would like to use is not among the distributions Stan supports, please request it on the stan-users mailing list, so that we know what probability distributions are in demand. Shape of Distribution Basic Properties Eventualaj ŝanĝoj en la … It is a compound probability distribution, where a probability vector p is drawn from a Dirichlet distribution with parameter vector , and an observation drawn from a multinomial distribution with probability vector p and number of trials n. The Dirichlet parameter vector captures the prior belief about the situation and can be seen as a pseudocount: observations of each outcome that occur before the actual data is collected. This distribution is in use in electrical, civil, mechanical, and financial engineering applications. It is similar to the Beta distribution, but much simpler to use especially in simulation studies since its probability density function, cumulative distribution function and quantile functions can be expressed in closed form. In probability theory, a logit-normal distribution is a probability distribution of a random variable whose logit has a normal distribution.If Y is a random variable with a normal distribution, and P is the standard logistic function, then X = P(Y) has a logit-normal distribution; likewise, if X is logit-normally distributed, then Y = logit(X)= log (X/(1-X)) is normally distributed. Kumaraswamy distribution. {\displaystyle \alpha =1} One has the following relation between Xa,b and Y1,b. Le 09/04/2014 22:03, cyrille piatecki a écrit : > Normaly a distribution like the normal one or any other is ploted along > the line. A two-parameter family of distributions on (0, 1) is explored which has many similarities to the beta distribution and a number of advantages in terms of tractability (it also, of course, has some disadvantages). Despite this, the GEV distribution is often used as an approximation to model the maxima of long (finite) sequences of random variables. La dernière modification de cette page a été faite le 15 janvier 2018 à 08:31. La ĉi-suba teksto estas aŭtomata traduko de la artikolo Kumaraswamy distribution article en la angla Vikipedio, farita per la sistemo GramTrans on 2016-06-12 00:40:34. {\displaystyle Y_{\alpha ,\beta }^{1/\gamma }} Contribute to transcendent-ai-labs/DynaML development by creating an account on GitHub. denotes a Beta distributed random variable with parameters Then Xa,b is the a-th root of a suitably defined Beta distributed random variable. where Hi{\displaystyle H_{i}} is the harmonic number function. ”A bivariate regression model with cure fraction”, Journal of Statistical Computation and Simulation, 2012. {\displaystyle \alpha =1} {\displaystyle \alpha } In probability and statistics, the Kumaraswamy's double bounded distribution is a family of continuous probability distributions defined on the interval [0,1]. = Assume that Xa,b is a Kumaraswamy distributed random variable with parameters a and b. As others have noticed, it is not normal since normal distribution has the $(-\infty, \infty)$ support, so at best you could use the truncated normal as an approximation. the d1 object now has … where B is the Beta function and Γ(.) β It is also called the Dirichlet compound multinomial distribution (DCM) or multivariate Pólya distribution. Talk:Kumaraswamy distribution. It is similar to the Beta distribution, but much simpler to use especially in simulation studies due to the simple closed form of both its probability density function and cumulative distribution function. The raw moments of this generalized Kumaraswamy distribution are given by: Note that we can re-obtain the original moments setting Ponnambalam Kumaraswamy (often referred to as Poondi Kumaraswamy) was a leading hydrologist from India[1][2]. The package provides one simple class called kumaraswamy, which implements the distribution.It is intended to mimic the API of scipy.stats.. from kumaraswamy import kumaraswamy d1 = kumaraswamy (a = 0.5, b = 0.5). This was extended to inflations at both extremes [0,1] in. {\displaystyle \gamma =a} Ferrari, S., & Cribari-Neto, F. (2004). Given two statistically independent random variables X and Y, the distribution of the random variable Z that is formed as the product. Li probableso-mase funktione f de disi distributione es (;) = {=, − =, Probability distribution name =Kumaraswamy type =density pdf_ cdf_ parameters = a>0, b>0, Then Xa,b is the a-th root of a suitably defined Beta distributed random variable. It is similar to the Beta distribution, but much simpler to use especially in simulation studies since its probability density function, cumulative distribution function and quantile functions can be expressed in closed form. The exponential distribution, Erlang distribution, and chi-squared distribution are special cases of the gamma distribution. One may introduce generalised Kumaraswamy distributions by considering random variables of the form Yα,β1/γ{\displaystyle Y_{\alpha ,\beta }^{1/\gamma }}, with γ>0{\displaystyle \gamma >0} and where Yα,β{\displaystyle Y_{\alpha ,\beta }} denotes a Beta distributed random variable with parameters α{\displaystyle \alpha } and β{\displaystyle \beta }. In probability theory, a distribution is said to be stable if a linear combination of two independent random variables with this distribution has the same distribution, up to location and scale parameters. Would you like Wikipedia to always look as professional and up-to-date?