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Trevor StephensSan Francisco, California. Living, Learning & Loving Analysis: MS Analytics Graduate from USF. Looking for the Kaggle tutorial? Find me on LinkedIn, Twitter, and Github.
http://www.trevorstephens.com/
San Francisco, California. Living, Learning & Loving Analysis: MS Analytics Graduate from USF. Looking for the Kaggle tutorial? Find me on LinkedIn, Twitter, and Github.
http://www.trevorstephens.com/
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Trevor Stephens | trevorstephens.com Reviews
https://trevorstephens.com
San Francisco, California. Living, Learning & Loving Analysis: MS Analytics Graduate from USF. Looking for the Kaggle tutorial? Find me on LinkedIn, Twitter, and Github.
trevorstephens.com
Committed to Open Source… Again - Trevor Stephens
http://trevorstephens.com/post/119417161119/committed-to-open-source-again
Regular Data Scientist, Occasional Blogger. San Francisco, CA. Committed to Open Source Again. Less than 1 minute read. This one’s been in the hopper for a long time! But now, you can grab it on the bleeding-edge version. And make your decision tree visualizations totally legit in scikit-learn! As many of you who head to my blog know, I’m quite the fan of tree-based learning, but have you ever seen scikit-learn’s D-Tree rendering? Function as documented here. May 20, 2015. You May Also Enjoy.
Armchair Particle Physicist - Trevor Stephens
http://trevorstephens.com/post/98233123324/armchair-particle-physicist
Regular Data Scientist, Occasional Blogger. San Francisco, CA. I am very impressed with the Kagglers that managed to CV this competition to a high degree of certainty. Some on the forums were talking about 40-70 folds to get a good idea of their model cut-off errors. I generally work comps locally on my little 4-core 8GB laptop, and at 12-36 hours run time per submission on this competition, I really couldn’t afford much more rigor on my already expensive models. Calculate the Spearman correlation. I was...
Box-Plots for Education Recap - Trevor Stephens
http://trevorstephens.com/post/107835704454/box-plots-for-education-recap
Regular Data Scientist, Occasional Blogger. San Francisco, CA. Box-Plots for Education Recap. I stumbled across a brand new ML competition platform a couple of months ago, DrivenData. Which describes itself as hosting data science competitions to save the world . Basically think Kaggle for non-profits. They had launched their first prize awarding comp, Box-Plots for Education. The data and problem were rather complex! The first task was to clean up the data. I broke the two numeric columns from all o...
Kaggle rank patterns - beating the benchmark - Trevor Stephens
http://trevorstephens.com/post/61355598326/kaggle-rank-patterns-beating-the-benchmark
Regular Data Scientist, Occasional Blogger. San Francisco, CA. Kaggle rank patterns - beating the benchmark. Recently, I have been spending what little free time I have working on a couple of fun Kaggle. Competitions: the getting started Titanic: Machine Learning from Disaster. Competition, as well as an actual prize-eligible contest, the Accelerometer Biometric Competition. What I found was actually very surprising:. The hockey stick shaped formations between these ties is pretty striking, especially in...
Titanic: Getting Started With R - Trevor Stephens
http://trevorstephens.com/post/72916401642/titanic-getting-started-with-r
Regular Data Scientist, Occasional Blogger. San Francisco, CA. Titanic: Getting Started With R. So you’re excited to get into prediction and like the look of Kaggle’s excellent getting started competition, Titanic: Machine Learning from Disaster. It’s a wonderful entry-point to machine learning with a manageably small but very interesting dataset with easily understood variables. As with most Kaggle competitions, you are given two datasets:. As this is a beginner’s competition, Kaggle has provided a coup...
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Predicting repeat buyers using purchase history | MLWave
http://mlwave.com/predicting-repeat-buyers-vowpal-wabbit
Predicting repeat buyers using purchase history. April 15, 2014. Another Kaggle contest means another chance to try out Vowpal Wabbit. This time on a data set of nearly 350 million rows. We will discuss feature engineering for the latest Kaggle contest and how to get a top 3 public leaderboard score ( 0.59347 AUC). A short competition description. The competition is to predict repeat buyers. You can download all data. With only a few shoppers. For a short description of the 4 benchmarks. If you check out...
A Clustered Google Maps of 10k Dutch Traffic Accidents | MLWave
http://mlwave.com/a-clustered-google-maps-of-dutch-traffic-accidents
A Clustered Google Maps of 10k Dutch Traffic Accidents. March 14, 2014. The Open Data Portal is a website made by the Dutch Government. It includes a data set of all registered traffic accidents in the province of North-Holland from 2005 to 2009. We munge the data and place it all on a Google Maps. We use MarkerClusterer to deal with the 10k markers. The Open Data Portal. The Dutch have an Open Data Portal. With data sets. These data sets come from a variety of government institutions. The Netherlands us...
Detecting Counterfeit Webshops. Part 1: Feature engineering | MLWave
http://mlwave.com/detecting-counterfeit-webshops-part-1-feature-engineering
Detecting Counterfeit Webshops. Part 1: Feature engineering. August 5, 2014. The number of fake webshops is rising. From 2010 to 2012 the Dutch authority on internet scams received 81.000 complaints. Spammers have moved from running their own webshops to hacking websites or registering expired domain names. This makes classification more difficult. Update: New Google Research: The underground market fueling for-profit abuse. Consumer safety at a webshop relies on:. The safety of the payment process.
Predicting CTR with online machine learning | MLWave
http://mlwave.com/predicting-click-through-rates-with-online-machine-learning
Predicting CTR with online machine learning. June 25, 2014. Good clicklog datasets are hard to come by. Luckily CriteoLabs released a week’s worth of data — a whopping 11GB! 8212; for a new Kaggle contest. The task is to predict the click-through-rate for ads. We will use online machine learning with Vowpal Wabbit to beat the logistic regression benchmark and get a nr. 1 position on the leaderboard. From this contest added to Vowpal Wabbit. Now that this contest is over: Go here. Our team got 29th place.
Kaggle Connectomics: Python Benchmark Code | MLWave
http://mlwave.com/kaggle-connectomics-python-benchmark-code
Kaggle Connectomics: Python Benchmark Code. March 8, 2014. For the Connectomics contest on Kaggle the task is to write a brain connectivity estimator using neuron activation time series data. Benchmark code for Discretization Pearson Correlation was available in C and Matlab. Now here in Python too! This article is under construction for the duration of the contest. The competition admins have released their own Python with correlation benchmark code. Check out their Github repo. A 5 minute tutorial.
Human Ensemble Learning | MLWave
http://mlwave.com/human-ensemble-learning
July 20, 2014. Wisdom of the crowds and ensemble machine learning techniques are similar in principle. Could insights in group learning provide insights in machine learning and vice versa? In this article we will touch upon a variety of more (or less) related concepts and try to build an ensemble view of our own. Charles Mackay (1841), Extraordinary Popular Delusions and the Madness of Crowds. Wisdom of the crowds. The concept of Wisdom of the crowds originated with the book. Oinas-Kukkonen (2008 –...
k-Nearest Neighbors and Clustering on Compressed Binary Files | MLWave
http://mlwave.com/k-nn-clustering-compressed-binary-files-ncd
K-Nearest Neighbors and Clustering on Compressed Binary Files. March 22, 2014. Normalized Compression Distance (Cilibrasi and Vitanyi) returns a similarity measure between binary files. This similarity measure allows for nearest neighbors search, clustering and classification. We are going to try some of these methods and review the results. This is a draft version. Pdf]” contains a formal introduction. If one spam word appears a lot, it will be saved in a dictionary (or compression table), and the compr...
Movie Review Sentiment Analysis with Vowpal Wabbit | MLWave
http://mlwave.com/movie-review-sentiment-analysis-with-vowpal-wabbit
Movie Review Sentiment Analysis with Vowpal Wabbit. March 11, 2014. Kaggle is hosting another cool knowledge contest, this time it is sentiment analysis on the Rotten Tomatoes Movie Reviews data set. We are going to use Vowpal Wabbit to test the waters and get our first top 10 leaderboard score. The Rotten Tomatoes movie review data set is a corpus of movie reviews used for sentiment analysis. Originally collected by Pang and Lee. Pdf] In their work on sentiment treebanks, Socher et al. 0 – negative.
Titanic – Machine Learning From Distaster with Vowpal Wabbit | MLWave
http://mlwave.com/tutorial-titanic-machine-learning-from-distaster
Titanic – Machine Learning From Distaster with Vowpal Wabbit. February 25, 2014. Kaggle is hosting a contest where the task is to predict survival rates of people aboard the titanic. A train set is given with a label 1 or 0, denoting ‘survived’ or ‘died’. We are going to use Vowpal Wabbit to get a score of about 0.79426 AUC (top 10%). In this Kaggle contest. Under construction. Come back soon. Getting started with Excel. Getting started with Python. Getting started with Scikit random forests. For this co...
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Trevor Steele
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Trevor Steele novelist | historical novels
As though everything depended on me. Kvazaŭ ĉio dependus de mi. Kaj staros tre alte…. Apenaŭ papilioj en Bergen-Belsen. La fotoalbumo: 1-a volumo. La fotoalbumo: 2-a volumo. Who is Trevor Steele? Kiu estas Trevor Steele? Link to Trevor on:. 3 thoughts on “ Who is Trevor Steele? October 16, 2013 at 9:08 am. Trevor Steele’s Esperanto novels are legend. Onya Trevor. November 1, 2013 at 8:06 am. Mi aparte rekomendas “Kaj staros tre alte”. Kaj nun mi ĵus legis “Australia Felix”....April 14, 2015 at 4:40 pm.
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Trevor's Telling Tales
Monday, September 19, 2011. Tuesday, September 13, 2011. Ahh the Joys of Blogging. It's been a great first few weeks here in Provo. Classes are classes and college is college. I was kind of expecting to be more difficult than it is but I am sure that is coming soon enough especially where Chemistry is concerned. It will all turn out great though. All in all college life is pretty good. Feel free to comment, email me, whatever. I love to talk to people :). Subscribe to: Posts (Atom).
Trevor Stephens
San Francisco, California. Living, Learning and Loving Analysis:. MS Analytics Graduate from USF. Looking for the Kaggle tutorial? Find me on LinkedIn. Committed to Open Source… Again. This one’s been in the hopper for a long time! But now, you can grab it on the bleeding-edge version. And make your decision tree visualizations totally legit in scikit-learn! You can now draw some pretty nice trees in scikit-learn using the newly overhauled export graphviz() function as documented here. X, y = make classi...
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Trevor Stephenson • Keyboard Performance: Piano, Fortepiano, Harpsichord
Keyboard Performance • Piano, Fortepiano, Harpsichord. Concerts, lectures, and masterclasses. Enter your email address to join our mailing list. By Scott Joplin, Charles Ives, Stephen Foster, Edward MacDowell &Vernon Duke. Trevor Stephenson – Victorian Parlor Grand Piano. Saturday, 7 pm. House Concert at Trevor Stephenson’s home studio. 5729 Forsythia Place, Madison WI 53705. Seating limited to 45 people. Reservations required: trevor@trevorstephenson.com. Songs by Mozart, Haydn and Schubert.
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