2684 search results for "map"

A Rather Nosy Topic Model Analysis of the Enron Email Corpus

November 3, 2013
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Having only ever played with Latent Dirichlet Allocation using gensim in python, I was very interested to see a nice example of this kind of topic modelling in R.  Whenever I see a really cool analysis done, I get the … Continue reading →

Simulating Abstract Art with R

November 3, 2013
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Piet Mondrian Composition with Red, Blue, Black, Yellow, and Gray (1921): An example draw from my simulation function: We're in the midst of planning our spring course on Empirical Research Methods, and as a result, I've...

Les k-plus prcoches voisins :Vite, il faut se la réapproprier…

November 2, 2013
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(This article was first published on Learning Data Science , and kindly contributed to R-bloggers) K-plus proches voisins Fondamentaux La notion de voisinage d'un point est assez intuitive. Une définition simple serait : une zone de l'espace qui comprend ce point. C'est une notion centrale en mathématique, particulièrement en analyse lorsqu'on souhaite unifier la notion de finitide (calcul de...

Consumer’s Choosing an Optimal Bundle – Utility Maximization

November 2, 2013
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# The theoretical basis of classical consumer theory lies# in utility maximization. The idea is that consumers# make consumption decisions based on choosing a bundle # of goods that will maximize individual utility.# Despite this hypothesis being large...

Efficiency Balanced Information Criterion for Item Selection

November 1, 2013
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# Han (2012) in the paper "An Efficiency Balanced Information Criterion # for Item Selection in Computerized Adaptive Testing" proposes a method# of evaluating potential items based on expected item potential information # as a function of maximum pote...

Quarterback Wonderlic Scores by Institution (Academic) Strength

November 1, 2013
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## geom_smooth: method="auto" and size of largest group is <1000, so using## loess. Use 'method = x' to change the smoothing method. I remember my dad telling me that when he was at Northwestern in the mid-70s, the team...

Real-time streaming differential RNA-seq analysis with eXpress

October 31, 2013
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RNA-seq has been performed routinely for at least 5+ years, yet there is no consensus on the best methodology for analyzing this data. For example, Eduardo Eyras's group recently posted a pre-print on methods to study splicing from RNA-seq, where this ...

Simulation of an Oxford (Undergrad) Interview Question

October 31, 2013
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A friend of mine, who's an economics teacher in London, is responsible for preparing some of his students for interviews at Oxford and Cambridge. He told me that, at these schools, students have to go through a nerve-wracking...

Finding R in a Hadoop World

October 31, 2013
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by Joseph Rickert The following is a brief report of all things R encountered in my not quite random, but nevertheless far from determined, walk through the O'Reilly Strata / Hadoop World Conference held this week in NYC. To start off, I had the pleasure of doing a 9:00 AM Monday morning joint tutorial with Antonio Piccolboni, the principal...