459 search results for "evaluation"

Making Sense of Logarithmic Loss

December 14, 2015
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Making Sense of Logarithmic Loss

Logarithmic Loss, or simply Log Loss, is a classification loss function often used as an evaluation metric in kaggle competitions. Since success in these competitions hinges on effectively minimising the Log Loss, it makes sense to have some understanding of how this metric is calculated and how it should be interpreted. Log Loss quantifies the The post

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Data, data, data

December 13, 2015
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Data, data, data

Having presented preliminary findings from a national sample of therapeutic communities in Brazil, I thought the Babbage's words fits like a glove for those criticizing quantitative approaches for policy evaluations: the "Errors using inadequate data are much less than those using no data at all” (Charles Babbage).

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Data, data, data

December 13, 2015
By
Data, data, data

Having presented preliminary findings from a national sample of therapeutic communities in Brazil, I thought the Babbage’s words fits like a glove for those criticizing quantitative approaches for policy evaluations: the “Errors using inadequate data are much less than those using no data at all” (Charles Babbage).

Read more »

Comparing total QBR with Passer Rating-Who are the most underrated and overrated passer in NFL

December 11, 2015
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Comparing total QBR with Passer Rating-Who are the most underrated and overrated passer in NFL

Total Quarterback Rating (Total QBR) is a measure for QB performance created by ESPN in 2011. It was intended to overcome obivous drawbacks of passer rating, which is purely based on passing stats. Total QBR evaluates each play and assigns a value according to many factors (like outcome of the play) including subjective ones, such as how clutch the throw was, how much pressure the...

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Experiments on english wikipedia. GloVe and word2vec.

November 30, 2015
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Experiments on english wikipedia. GloVe and word2vec.

Today I will start to publish series of posts about experiments on english wikipedia. As I said before, text2vec is inspired by gensim - well designed and quite efficient python library for topic modeling and related NLP tasks. Also I found very useful Radim’s posts, where he tried to evaluate some algorithms on english wikipedia dump....

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Automate the Boring Stuff: GGPlot2

November 26, 2015
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Automate the Boring Stuff: GGPlot2

The majority of my interaction with the ggplot2 package involves the interactive execution of code to visualize data within the context of exploratory data analysis. This is often a manual process and quite laborious. I recently sought to improve these tasks by creating a series of user defined functions that contained my most commonly used

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statistically significant trends with multiple years of complex survey data

November 22, 2015
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statistically significant trends with multiple years of complex survey data

guest post by my friend thomas yokota, an oahu-based epidemiologist. palmero professor vito muggeo wrote the joinpoint analysis section of the code below to demonstrate that the segmented package eliminates the need for external (registration-only, windows-only) software. survey package creator...

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Deep Learning with MXNetR

November 17, 2015
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Deep Learning with MXNetR

Deep learning has been an active field of research for some years, there are breakthroughs in image and language understanding etc. However, there has not yet been a good deep learning package in R that offers state-of-art deep learning models and the real GPU support to do fast training on these models. In this post, we introduce MXNetR, an R...

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More on stepped wedge

November 7, 2015
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A couple of months back I talked at the launch of the Trial series on the Stepped Wedge Designed, on which I have worked together with a number of colleagues at UCL and LSHTM. Jennifer, who's one of the authors of the series and is doing her ...

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Clickable list of the best animations since 1900, gathered the geek way.

October 22, 2015
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Clickable list of the best animations since 1900, gathered the geek way.

In the midst of our random data exploration, Laure and I started playing around with Hadley’s movies dataset and noticed that there were a lot of old cartoon animations… I mean REALLY old. So we got excited and wondered if we could find Youtube links for all these old animations. Indeed we could! …

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