Office 2010 Language Packs Free Official Direct Download Links. How Not To Sort By Average Rating. By Evan Miller February 6, 2009 (Changes) PROBLEM: You are a web programmer.
You have users. Your users rate stuff on your site. You want to put the highest-rated stuff at the top and lowest-rated at the bottom. WRONG SOLUTION #1: Score = (Positive ratings) - (Negative ratings) Why it is wrong: Suppose one item has 600 positive ratings and 400 negative ratings: 60% positive. Sites that make this mistake: Urban Dictionary WRONG SOLUTION #2: Score = Average rating = (Positive ratings) / (Total ratings) Why it is wrong: Average rating works fine if you always have a ton of ratings, but suppose item 1 has 2 positive ratings and 0 negative ratings.
Sites that make this mistake: Amazon.com CORRECT SOLUTION: Score = Lower bound of Wilson score confidence interval for a Bernoulli parameter Say what: We need to balance the proportion of positive ratings with the uncertainty of a small number of observations. (Use minus where it says plus/minus to calculate the lower bound.) VIM Keyboard Shortcuts. R - Linear Models. 4 Linear Models Let us try some linear models, starting with multiple regression and analysis of covariance models, and then moving on to models using regression splines.
In this section I will use the data read in Section 3, so make sure the fpe data frame is attached to your current session. 4.1 Fitting a Model To fit an ordinary linear model with fertility change as the response and setting and effort as predictors, try > lmfit = lm( change ~ setting + effort ) Note first that lm is a function, and we assign the result to an object that we choose to call lmfit (for linear model fit). The argument to lm is a model formula, which has the response on the left of the tilde ~ (read "is modeled as") and a Wilkinson-Rogers model specification formula on the right. A nice feature of R is that it lets you create interactions between categorical variables, between categorical and continuous variables, and even between numeric variables (it just creates the cross-product). 4.2 Examining a Fit.
Adaptive learning platform. While once it might have been shocking to see a classroom outfitted with computers, or considered revolutionary to be able to take a course online, today both of those things are pretty commonplace.
As technology is playing an ever bigger role in our lives, education from kindergarten to college has naturally been impacted as well, in part thanks to the revolutionary changes made possible by education-focused startups. These startups have made it possible to share lectures with students all over the world, reduce costs, and in some cases have made it easier for teachers to monitor and track student progress. All in all, they’re making some real and lasting changes in education both at home at abroad. 2012 has been a particularly great year for educational technology, with new ventures getting up and running and old ones going from fledgling companies to industry standards.
New These startups were founded or launched over the past two years. Noteworthy Major Players. Abusing Amazon’s Elastic MapReduce Hadoop service… easily, from R « Things I tend to forget. I built my first Hadoop cluster this week and ran my first two test MapReduce jobs.
It took about 15 minutes, 2 lines of R, and cost 55 cents. And you can too with JD Long’s (very, very experimental) ‘segue’ package. But first, you may be wondering why I use the word “abusing” in this post’s title. Well, the Apache Hadoop project, and Google’s MapReduce processing system which inspired it, is all about Big Data. Its raison d’être is the distributed processing of large data sets.
I use the term “abuse” because, well, we’re just not going to use any of that Big Data stuff. Pacotes de Idiomas do Office 2010 baixe gratuitamente (links oficiais) Os Pacotes de Idiomas do Office 2010 inclui muitas ferramentas como um verificador ortográfico, dicionário de sinônimos, gramática e verificador de estilo, AutoResumo, AutoCorreção, Editores de método de entrada para os idiomas asiáticos e outros funcionalidades.
Esses pacotes de idiomas são destinados para todos os aplicativos do Office 2010, tais como: PowerPoint, Excel, Outlook, Excel, Word, Publisher, OneNote, Publisher, Projeect, Visio e SharePoint Workspace e para todos os pacotes do Office que possuem estas aplicações. Untitled. Dicas de como aumentar a produtividade usando autocmd no vim. Quantas vezes você faz um arquivo que é exatamente igual à um outro arquivo por dia?
Quantas vezes você abre um arquivo só para copiar um trecho de código que é utilizado em vários arquivos? Quantas vezes você se vê fazendo a mesma coisa que fez em outro lugar? E aquela palavra que você sempre escreve errada? Aquela função que você sempre esquece o nome? Conheça algumas dicas para aumentar a produtividade e diminuir o trabalho dessas coisas rotineiras.
Lista de Abreviaturas Sabe aquelas palavras que a gente insiste em escrever errado? Agora a pergunta que não quer calar: Porque não usarmos algo para evitar esse tipo de coisa? O Vim ainda possibilita que você crie sintaxes diferentes para arquivos diferentes. Adicione ao txt.vim as abreviaturas utilizadas para arquivos texto. Ao seu .vimrc, basta acrescentar: O autocmd funciona mais ou menos igual a uma trigger.