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Topic: Pareto index

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Vilfredo Pareto

Pareto distribution

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	Pareto Principle (80-20 Rule) Complete Information
		The misnamed Pareto principle (also known as the 20-80 rule, the law of the vital few and the principle of factor sparsity) states that for many phenomena 80% of consequences stem from 20% of the causes.
		The Pareto index is a measure of the inequality of income distribution.
		The value of the Pareto Principle for a manager is that it reminds you to focus on the 20 percent that matters.
	www.gassner.co.il /pareto (1784 words)

	Vilfredo Pareto - Wikipedia, the free encyclopedia
		Vilfredo Pareto (born July 15, 1848 in France - died August 19, 1923 in Lausanne, Switzerland) made several important contributions to economics, sociology and moral philosophy, especially in the study of income distribution and in the analysis of individuals' choices.
		The Pareto index is a measure of the inequality of income distribution.
		The Pareto chart is a special type of histogram, used to view causes of a problem in order of severity from largest to smallest.
	en.wikipedia.org /wiki/Vilfredo_Pareto (309 words)

	Vilfredo Pareto
		Vilfredo Pareto (July 15, 1848 - August 19, 1923) made several important contributions to economics, sociology and moral philosophy, especially in the study of income distribution and in the analysis of individuals' choices.
		He is well known for the observation that 20% of the population owned 80% of the property in Italy, later generalised (by Joseph Juran and others) into the Pareto principle, and generalised further to the concept of a Pareto distribution.
		Pareto was one of the founders of welfare analysis and Walras' successor at Lausanne.
	www.nebulasearch.com /encyclopedia/article/Vilfredo_Pareto.html (215 words)

	Pareto index - Wikipedia, the free encyclopedia
		In economics the Pareto index, named after the Italian economist and sociologist Vilfredo Pareto, is a measure of the breadth of income distribution.
		It is one of the parameters specifying a Pareto distribution and embodies the Pareto principle, which was an observation that 20% of the members of Italian society owned 80% of the wealth.
		The larger the Pareto index, the smaller the proportion of very wealthy people.
	en.wikipedia.org /wiki/Pareto_index (138 words)

	Vilfredo Pareto
		The Italian economist Vilfredo Pareto was one of the leaders of the Lausanne School and an illustrious member of the "second generation" of the Neoclassical revolution.
		Pareto's theory of society claimed that there was a tendency to return to an equilibrium where a balanced amount of Class I and Class II people are present in the governing élites.
		Finally, Pareto's ruminations on the potential efficiency of a collectivist society were aired in the Socialist Calculation Debate that arose between the Paretians and the Austrians.
	cepa.newschool.edu /het/profiles/pareto.htm (3058 words)

	Pareto distribution - Wikipedia, the free encyclopedia
		The Pareto distribution, named after the Italian economist Vilfredo Pareto, is a power law probability distribution found in a large number of real-world situations.
		Pareto originally used this distribution to describe the allocation of wealth among individuals since it seemed to show rather well the way that a larger portion of the wealth of any society is owned by a smaller percentage of the people in that society.
		This idea is sometimes expressed more simply as the Pareto principle or the "80-20 rule" which says that 20% of the population owns 80% of the wealth.
	www.wikipedia.org /wiki/Pareto_distribution (773 words)

	Vilfredo Pareto, Biography: The Concise Encyclopedia of Economics: Library of Economics and Liberty
		Although Pareto thought his law should be "provisionally accepted as universal," he thought that exceptions were possible, and as it turns out, many exceptions have been found.
		Pareto is also known for showing that the assumption that the utility of goods can actually be measured was not necessary for deriving any of the standard results in consumer theory.
		A self-described pacifist who disdained honors, Pareto was nominated in 1923 to a Senate seat in Mussolini's fledgling government but refused to become a ratified member.
	www.econlib.org /library/Enc/bios/Pareto.html (471 words)

	alpha index ; α-index ; index of Pareto (Site not responding. Last check: 2007-10-28)
		indice alpha ; indice α ; indice di Pareto
		indicele alfa ; indicele α ; indicele lui Pareto
		This Glossary may not be copied, reproduced or retained in any form whatsoever without the express permission of the ISI.
	isi.cbs.nl /glossary/term100.htm (130 words)

	Vilfredo Pareto -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-28)
		He introduced the concept of (Click link for more info and facts about Pareto efficiency) Pareto efficiency and helped develop the field of (The branch of economics that studies the economy of consumers or households or individual firms) microeconomics with ideas such as (Click link for more info and facts about indifference curves) indifference curves.
		The (Click link for more info and facts about Pareto index) Pareto index is a measure of the inequality of income distribution.
		Pareto's social policies were put on paper in his work, Mind and Society, which is sometimes criticized as being (Someone who believes in rule by an elite group) elitist.
	www.absoluteastronomy.com /encyclopedia/v/vi/vilfredo_pareto.htm (157 words)

	pareto (Site not responding. Last check: 2007-10-28)
		Pareto chart is a bar graph used to arrange information in such a way that priorities for process improvement can be established.
		Pareto diagrams are named after Vilfredo Pareto, an Italian sociologist and economist, who invented this method of information presentation in 1897.
		The fundamental idea (Pareto principle) behind the use of Pareto diagrams is that 80% of an effect is due to 20% of the causes, so for quality improvement the first few (as presented on the diagram) contributing causes to a problem usually account for the majority of the result.
	www.hta-bi.bfh.ch /~sha/Octave/index/f/pareto.html (278 words)

	Preliminary Investigation of a New Genetic Algorithm-Based Multiple-Objective Optimization Technique: Plateau Weighting
		Pareto schemes typically suffer from population drift, where the population migrates to a small portion of the Pareto set (Goldberg and Segrest, 1987).
		The parameter L is an index that represents the location of an individual with respect to all other individuals in the population.
		Pareto ranking and a hybrid niched-Pareto MOGA technique were implemented and tested for the same population sizes and random seeds.
	www4.ncsu.edu /~dhloughl/Documents/ICGA97/icga97.htm (4468 words)

	Wealth Distribution and the Role of Networks : Finance : HBS Working Knowledge
		But in 1897, an Italian engineer-turned-economist named Vilfredo Pareto discovered a pattern in the distribution of wealth that appears to be every bit as universal as the laws of thermodynamics or chemistry.
		But when Pareto studied the numbers more closely, he discovered that they dwindled in a very special way toward the wealthy end of the curve: Each time you double the amount of wealth, the number of people falls by a constant factor.
		In a Pareto distribution, the factor by which the number of people declines as wealth increases remains constant in any particular country, but the factor itself is different in different countries.
	hbswk.hbs.edu /pubitem.jhtml?id=2906&sid=0&pid=0&t=finance (1836 words)

	Vilfredo Pareto (Site not responding. Last check: 2007-10-28)
		right Vilfredo Pareto (born July 15, 1848 in France - died August 19, 1923 in Lausanne, Switzerland) made several important contributions to economics, sociology and moral philosophy, especially in the study of income distribution and in the analysis of individuals' choices.
		In 1906, he made the well-known observation that 20% of the population owned 80% of the property in Italy, later generalised (by Joseph M. Juran and others) into the so-called Pareto principle (for many phenomena 80% of consequences stem from 20% of the causes), and generalised further to the concept of a Pareto distribution.
		Pareto's social policies were put on paper in his work, Mind and Society.
	www.kiwipedia.com /en/vilfredo-pareto.html (269 words)

	Pareto Chart
		Vilfredo Pareto (July 15, 1848 - August 19, 1923) made several importantcontributions to economics, sociology and moral philosophy, especially in the study ofincome distribution and in the analysis of individuals' choices.
		He is well known for the observation that 20% of the population owned 80% of the property in Italy, later generalised (by Joseph M. Juran and others)into the Pareto principle, and generalised further to the conceptof a Pareto distribution.
		The Pareto index is a measure of the inequality of incomedistribution.
	www.lottery-news.net /dust30173-pareto_chart.html (432 words)

	[No title] (Site not responding. Last check: 2007-10-28)
		It is now commonly recognized that for finite samples sizes the Hill estimator does not accurately estimate the quantity it was designed to estimate, the index of regular variation.
		The aim of the present talk is to give a natural resolution to the "Hill horror plot" paradox and to "rehabilitate" the Hill estimator, by looking at the problem from the point of view of selecting an appropriate Pareto type tail.
		We establish its efficiency for estimating the fitted Pareto index.
	math.ucsd.edu /~politis/CONTR/ion-grama.text (194 words)

	Vilfredo Pareto Biography / Biography of Vilfredo Pareto Main Biography
		The Italian sociologist, political theorist, and economist Vilfredo Pareto (1848-1923) is chiefly known for his influential theory of ruling elites and for his equally influential theory that political behavior is essentially irrational.
		Vilfredo Pareto was born in Paris on July 15, 1848.
		In 1889 Pareto married a Russian girl, Dina Bakunin, resigned his post with the iron company for a consultancy, and for the next 3 years wrote and spoke against the protectionist policy of the.....
	www.bookrags.com /biography-vilfredo-pareto (244 words)

	The Ultimate Pareto distribution - American History Information Guide and Reference
		It can be seen from the PDF graph on the right, that the "probability" or fraction of the population p(x) that owns a small amount of wealth per person (x) is rather high, and then decreases steadily as wealth increases.
		The Pareto distribution is related to the exponential distribution f(xk) by:
		The Gini coefficient is a measure of the deviation of the Lorenz curve from the equidistribution line which is a line connecting [0,0] and [1,1], which is shown in fl (k=∞) in the Lorenz plot on the right.
	www.historymania.com /american_history/Pareto_index (639 words)

	Science Fair Projects - Gini coefficient
		The Gini coefficient is a number between 0 and 1, where 0 corresponds with perfect equality (where everyone has the same income) and 1 corresponds with perfect inequality (where one person has all the income, and everyone else has zero income).
		The Gini index is the Gini coefficient expressed in percentage form, and is equal to the Gini coefficient multiplied by 100.
		While the Gini coefficient is mostly used to measure income inequality, it can also be used to measure wealth inequality.
	www.all-science-fair-projects.com /science_fair_projects_encyclopedia/Gini_index (1358 words)

	G u r u s o n l i n e - E n g l i s h
		Vilfredo Pareto, italian economist and sociologist, was one of the leaders of the so-called Lausanne School, founded by León Walras in the XIX century.
		Before Pareto changed political direction (towards non-democratic ideas of Sorel and Mussolini type), in his Cours d'Économie Politique, published in 1896 and 1897, presented an exposition of the so-called Pareto's Law of income distribution.
		In the case of the Pareto distribution, we were looking, with Marc Mezard, for the simplest model of economy where agents exchange goods and speculate, and found an equation exactly identical to one that we had already studied in physics, that leads to a Pareto equilibrium distribution of wealth.
	www.gurusonline.tv /uk/conteudos/bouchaud.asp (1629 words)

	The physics of personal income (February 2002) - News - PhysicsWeb
		The economist Pareto proposed in 1897 that income distribution followed a simple power law – that is, the number of people earning a certain wage falls as that wage rises.
		This law is characterized by the ‘Pareto index’, which is small if incomes are distributed unevenly across the population, and large if the spread is more equal.
		The economist Gibrat later found that the incomes of the remaining 99% of earners follow a log-normal distribution – that is, the logarithms of the incomes have a normal, symmetrical distribution.
	physicsweb.org /articles/news/6/2/19/1 (444 words)

	Regression with response distributions of Pareto-type - Beirlant, Goegebeur (ResearchIndex) (Site not responding. Last check: 2007-10-28)
		Abstract: In this paper we discuss the estimation of the Pareto index when covariate information is available.
		The Pareto index is modelled as a function of the explanatory variables and hence measures the tail heaviness of the conditional distribution of the response variable given this covariate information.
		10 Kernel estimates of the tail index of a distribution (context) - Csorgo, Deheuvels et al.
	citeseer.ist.psu.edu /beirlant00regression.html (505 words)

	What does a Pareto chart tell me that a pie chart doesn't? [Index (Ar)] - Elsmar Cove Forums Index
		It is a well known theory formulated by Pareto that 80% of the effects are caused by only 20% of the causes, or in such cases 80% of the trouble is caused by 20% of the causes.
		Once I have the cumulative frequency curve in a Pareto Chart, the method I commonly use is to project the 80% mark from the Y axis to the curve, and drop the intrecept down on the x axis from that point.
		The Pareto Principle is the 80:20 rule that we all know and love.
	16949.com /Forums/archive/index.php/t-5311 (907 words)

	The Paretian System: II - Efficiency
		Pareto's own term, "maximum ophelimity", may not be a much better way of conveying the purely descriptive (and ethically neutral) meaning of the concept of Pareto-optimality.
		In their most ambitious interpretation, they are the upper contour set of a "community utility function", an index function of "aggregate utility".
		However, we shall resist this interpretation temporarily and refer to a particular CIC as a set of output combinations that yield the same "aggregate utility".
	cepa.newschool.edu /het/essays/paretian/paretoptimal.htm (4312 words)

	Brill's Mutual Funds Interactive(R) -- Funds 101
		Index funds are re-priced once at the end of each trading day and transactions take place at that net asset value.
		Furthermore, both ETFs and index funds pay dividends and are unavoidably exposed to capital gains whenever stocks are moved in and out of the actual index.
		Finally, if either is sampling part of the index rather than replicating it, it may introduce tracking error.
	www.brill.com /funds101/par05001.html (701 words)

	[No title] (Site not responding. Last check: 2007-10-28)
		Two important goals for such problems are the generation of Pareto optimum solutions and the quality assessment (or "goodness") of such solutions.
		This dissertation presents an approach for generation of Pareto solutions and metrics for quality assessment of such solutions for multiobjective and multidisciplinary design optimization problems.
		In the approach for the generation of Pareto solutions, a new constraint handling technique is developed that works with a Multi-Objective Genetic Algorithm (MOGA) to solve constrained multiobjective optimization problems.
	delta.cs.cinvestav.mx /~ccoello/EMOO/wu_abstract.txt (280 words)

	GloriaMundi Resource Detail page
		Tail index estimation appears to be a tailor-made tool for estimating the extreme quantiles of heavy tailed distributions, as it exploits the information provided by the extreme observations.
		The tail shape of heavy tailed distributions resembles-to a first approximation-the hyperbolic shape of the Pareto distribution characterised by the so-called tail index.
		Ususally, a Hill-type estimator is used to estimate this tail index.
	www.gloriamundi.org /detailpopup.asp?keywords=tail&ID=453055666 (140 words)

	Journal of the American Statistical Association: Tail index estimation, Pareto quantile plots, and regression ... (Site not responding. Last check: 2007-10-28)
		Tail index estimation, Pareto quantile plots, and regression diagnostics.
		Journal of the American Statistical Association; 12/1/1996; Teugels, Jozel L. The use of extreme value statistics for estimating the Pareto tail index depends substantially on the choice of the number of extreme values considered.
		These tail index estimators can be considered estimates for the slope at the right upper tail of a Pareto quantile plot which is obtained employing a weighted least squares algorithm.
	highbeam.com /library/doc0.asp?docid=1G1:19063067&refid=ink_tptd_mag (196 words)

	Document de Travail 9970
		Indeed, as exposure is the product of contamination and consumption values, assumptions about the aggregation of data have a crucial role in the risk evaluation for many contaminants, PTWI belongs to the exposure tail distribution, which suggests the use of Extreme Value Theory to evaluate the risk.
		Our approach consists in modeling the exposure tail by a Pareto type distribution characterized by a Pareto index which may be seen as a measure of risk.
		We compare the results with an empirical plug-in method and show that the Pareto adjustment is relevant and efficient for low risk evaluation while the plug-in method should be used for risky contaminants.
	www.crest.fr /labo/ls/articles/DT2003-13.html (256 words)

	[No title]
		In Paretos Theorien zum Kampf zwischen den Klassen zeigt sich sein besonderes Verhltnis zu Karl Marx.
		Pareto wandte sich dagegen, die Bezieher von Zinseinnahmen und die Unternehmer in einen Topf zu werfen.
		In der angelschsischen Welt, aber auch in Frankreich und Italien stieá Paretos Werk auf ein groáes Echo.
	www.hpstaber.com /STATISTICS/STATIST.txt (11439 words)

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