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Statistical Learning


3 facts about time series forecasting that surprise experienced machine learning practitioners.

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Time series forecasting is something of a dark horse in the field of data science: It is one of the most applied data science techniques in business, used extensively in finance, in supply chain management and in production and inventory planning, and it has a well established theoretical grounding in statistics and dynamic systems theory. Yet it retains something of an outsider status compared to more recent and popular machine learning topics such as image recognition and natural language processing, and it gets little or no treatment at all in introductory courses to data science and machine learning. My original training is in neural networks and other machine learning methods, but I gravitated towards time series methods after my career led me to the role of demand forecasting specialist. In recent weeks, as part of my team's effort to expand beyond traditional time series forecasting capabilities and into a borader ML based approach to our business, I found myself having several discussions with experienced ML engineers, who were very good at ML in general, but didn't have much experience with times series methods. I realized from those discussions that there were several things specific to time series forecasting that the forecasting community takes for granted but are very surprising to other ML practioners and data scientists, especially when compared to the way standard ML problems are approached.


How to Build a Machine Learning Model

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How to Build a Machine Learning Model A Visual Guide to Learning Data Science Jul 25 · 13 min read Learning data science may seem intimidating but it doesn't have to be that way. Let's make learning data science fun and easy. So the challenge is how do we exactly make learning data science both fun and easy? Cartoons are fun and since "a picture is worth a thousand words", so why not make a cartoon about data science? With that goal in mind, I've set out to doodle on my iPad the elements that are required for building a machine learning model.


Machine Learning Algorithms For Beginners with Code Examples in Python

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Machine learning (ML) is rapidly changing the world, from diverse types of applications and research pursued in industry and academia. Machine learning is affecting every part of our daily lives. From voice assistants using NLP and machine learning to make appointments, check our calendar and play music, to programmatic advertisements -- that are so accurate that they can predict what we will need before we even think of it. More often than not, the complexity of the scientific field of machine learning can be overwhelming, making keeping up with "what is important" a very challenging task. However, to make sure that we provide a learning path to those who seek to learn machine learning, but are new to these concepts.


Stacking Ensemble Machine Learning With Python

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Stacking or Stacked Generalization is an ensemble machine learning algorithm. It uses a meta-learning algorithm to learn how to best combine the predictions from two or more base machine learning algorithms. The benefit of stacking is that it can harness the capabilities of a range of well-performing models on a classification or regression task and make predictions that have better performance than any single model in the ensemble. In this tutorial, you will discover the stacked generalization ensemble or stacking in Python. Stacking Ensemble Machine Learning With Python Photo by lamoix, some rights reserved.


Deep Learning Prerequisites: Logistic Regression in Python

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Created by Lazy Programmer Inc. English [Auto-generated], Portuguese [Auto-generated], 1 more Created by Lazy Programmer Inc. This course is a lead-in to deep learning and neural networks - it covers a popular and fundamental technique used in machine learning, data science and statistics: logistic regression. We cover the theory from the ground up: derivation of the solution, and applications to real-world problems. We show you how one might code their own logistic regression module in Python. This course does not require any external materials.


The mathematics and Intuitions of Principal Component Analysis (PCA) Using Truncated Singular…

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As data scientists or Machine learning experts, we are faced with tonnes of columns of data to extract insight from, among these features are redundant ones, in more fancier mathematical term -- co-linear features. The numerous columns of features without prior treatment leads to curse of dimensionality which in turn leads to over fitting. To ameliorate this curse of dimensionality, principal component analysis (PCA for short) which is one of many ways to address this, is employed using truncated Singular Value Decomposition (SVD). Principal Component Analysis starts to make sense when the number of measured variables are more than three (3) where visualization of the cloud of the data point is difficult and it is near impossible to get insight from. First: Let's try to grasp the goal of Principal Component Analysis.


Support Vector Machine In Python - Machine Learning in Python Tutorial

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This video'Support Vector Machine In Python' covers A brief introduction to Support Vector Machine in Python with a use case to implement SVM using Python. Support Vector Machine (SVM) is a supervised machine learning algorithm capable. Introduction To Machine learning, What is Support Vector Machine? This video'Support Vector Machine In Python' covers A brief introduction to Support Vector Machine in Python with a use case to implement SVM using Python.


The Machine Learning Field Guide - KDnuggets

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We all start with either a dataset or a goal in mind. Once we've found, collected or scraped our data, we pull it up, and witness the overwhelming sight of merciless cells of numbers, more numbers, categories, and maybe some words! A naive thought crosses our mind, to use our machine learning prowess to deal with this tangled mess... but a quick search reveals the host of tasks we'll need to consider before training a model! Once we overcome the shock of our unruly data, we look for ways to battle our formidable nemesis. We start by trying to get our data into Python. It is relatively simple on paper, but the process can be slightly... involved. Nonetheless, a little effort was all that was needed (lucky us). Without wasting any time, we begin data cleaning to get rid of the bogus and expose the beautiful.


From Coursera to Omdena in 1 year

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Throughout the rest of my high school, I learned about game development, advanced data structures and algorithms, but not much about AI. The only exposure I had to Machine Learning was this website here, which didn't make a whole lot of sense to me back then. Fast forward, I returned to India and was attending Eastern Public School, finishing up my 12th grade with an International Baccalaureate diploma. I started the Stanford University Machine Learning course taught by Dr. Andrew Ng, http://ml-class.org/. The best part is it does not use any high level libraries to teach the concepts to you, so you have to use MATLAB to answer all the programming assignments.


Creating Heatmaps and Clustering in R

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In the R code above, the bluered() function [in gplots package] is used to generate a smoothly varying New What you'll learn to create colorful heatmaps showing the relationship between species and also gene expression levels between samples how to cluster species/genes in the data sets Requirements Description In this video the student will be able to use clustering methods to find clusters in his data. He will also be able to make nice-looking heatmaps using the heatmap and the pheatmap command. Clustering topics such as k-means clustering, PAM clustering, Silhouette plots, and elbow plots will be covered. Minimal familiarity with R coding is required. In this video the student will be able to use clustering methods to find clusters in his data.