Search results “Cluster analysis for applications”

Definition,Measures , Application & Examples Cluster Analysis

Views: 327
Dr.Anamika Bhargava

This is short tutorial for
What it is? (What do we mean by a cluster?)
How it is different from decision tree?
What is distance and linkage function?
What is hierarchical clustering?
What is scree plot & dendogram?
What is non hierarchical clustering (k-means)?
How to learn it in detail (step by step)?
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Read in great detail along with Excel output, computation and SAS code
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https://www.udemy.com/cluster-analysis-motivation-theory-practical-application/?couponCode=FB_CA_001

Views: 140939
Gopal Malakar

.
Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "FAIR USE" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.
.

Views: 30162
Artificial Intelligence - All in One

K-means clustering is used in all kinds of situations and it's crazy simple. Example R code in on the StatQuest website: https://statquest.org/2017/07/05/statquest-k-means-clustering/
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Views: 96534
StatQuest with Josh Starmer

Hierarchical Clustering - Fun and Easy Machine Learning with Examples
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Hierarchical Clustering
Looking at the formal definition of Hierarchical clustering, as the name suggests is an algorithm that builds hierarchy of clusters. This algorithm starts with all the data points assigned to a cluster of their own. Then two nearest clusters are merged into the same cluster. In the end, this algorithm terminates when there is only a single cluster left.
The results of hierarchical clustering can be shown using Dendogram as we seen before which can be thought of as binary tree
Difference between K Means and Hierarchical clustering
Hierarchical clustering can’t handle big data well but K Means clustering can. This is because the time complexity of K Means is linear i.e. O(n) while that of hierarchical clustering is quadratic i.e. O(n2).
In K Means clustering, since we start with random choice of clusters, the results produced by running the algorithm multiple times might differ. While results are reproducible in Hierarchical clustering.
K Means is found to work well when the shape of the clusters is hyper spherical (like circle in 2D, sphere in 3D).
K Means clustering requires prior knowledge of K i.e. no. of clusters you want to divide your data into. However with HCA , you can stop at whatever number of clusters you find appropriate in hierarchical clustering by interpreting the Dendogram.
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Views: 37386
Augmented Startups

What is clustering
Partitioning a data into subclasses.
Grouping similar objects.
Partitioning the data based on similarity.
Eg:Library.
Clustering Types
Partitioning Method
Hierarchical Method
Agglomerative Method
Divisive Method
Density Based Method
Model based Method
Constraint based Method
These are clustering Methods or types.
Clustering Algorithms,Clustering Applications and Examples are also Explained.

Views: 103556
IT Miner - Tutorials & Travel

Título: Cluster analysis: application to molecular variability studies
Descripción: The objective of this Polimedia is to provide the student with the theorical basis of cluster analysis applied to variability studies with molecular markers. A concrete example is developed based on dominant molecular markers.
Autor/a: Pérez De Castro Ana María
+ Universitat Politècnica de València UPV: https://www.upv.es
+ Más vídeos en: https://www.youtube.com/valenciaupv
+ Accede a nuestros MOOC: https://upvx.es

Views: 3553
Universitat Politècnica de València - UPV

The basic scenario is as follows: To extract a region coordinates from a 2D grid. A file in Arc Grid format first has header (attribute) information about the 2D grid and then followed by a grid itself. The value in each cell is the intensity of the area represented by that cell. If this value is zero then the area represented by that cell represent an empty area. Each connected set of cells with same intensity represents a region of that intensity. A region can have holes, this means that in an interior of a region there can be a cells of other intensity or intensity value zero. So, problem is extract each such region with a set of hole cycles.
Many approaches are available for the study of the data; these include representation of data in most defined form, reduction in noise, etc. While the various methods have been developed for the above mentioned purpose there still exist some complications. And sometimes these methods cannot be applied on all kind of data set; data set with varying noise, dimensions, variables. The focus of my project is to implement cluster algorithm and to validate the obtained result. This is particularly important for the protection of bad cluster formation and reduction of noise (irrelevant data objects).

Views: 124
K Brat

Learn 4 basic types of cluster analysis and how to use them in data analytics and data science. This video reviews the basics of centroid clustering, density clustering, distribution clustering, and connectivity clustering.

Views: 3954
Decisive Data

Views: 39390
Educate Motivate

Supervised and unsupervised learning algorithms

Views: 73124
Nathan Kutz

MIT 6.0002 Introduction to Computational Thinking and Data Science, Fall 2016
View the complete course: http://ocw.mit.edu/6-0002F16
Instructor: John Guttag
Prof. Guttag discusses clustering.
License: Creative Commons BY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

Views: 97081
MIT OpenCourseWare

Full lecture: http://bit.ly/K-means
The K-means algorithm starts by placing K points (centroids) at random locations in space. We then perform the following steps iteratively: (1) for each instance, we assign it to a cluster with the nearest centroid, and (2) we move each centroid to the mean of the instances assigned to it. The algorithm continues until no instances change cluster membership.

Views: 560108
Victor Lavrenko

Module XXII - CLUSTERING
CLUSTERING: Clustering is an important form of unsupervised learning (i.e., extracting patterns from unlabeled data). These two videos discuss how Kruskal's MST algorithm suggests flexible and useful greedy approaches to clustering problems.

Views: 286
intrigano

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TRANSCRIPT
In this video, we are going to learn a little bit about cluster analysis. And this is a topic that we're gonna be discussing over the duration of this course. So just to give you an overview of the different things we're gonna be covering, I'm gonna give you an introduction to cluster analysis, basically what is it and what are the different applications of it, as well as what kind of algorithms can we expect. And in fact, we're gonna be covering three very popular algorithms, k-means clustering, DBSCAN, which stands for density-based spatial clustering of applications with noise, but usually we just call it DBSCAN, and then hierarchical agglomerative clustering, HAC. These are three very popular clustering algorithms. And the interesting thing is they all take very different approaches to creating clusters. And we're gonna get into all those in the subsequent videos. But first let's talk a little bit about cluster analysis. And that's what we're gonna be focusing on primarily in this video, just to acquaint you with some of the terminology as well as some applications of cluster analysis for example. So clustering analysis, so imagine we have some data. The whole point of clustering analysis is in an unsupervised way with no a priori information, we want to be able to separate different groups based on the data that we have. And now sometimes these groups are predefined. You have the set of data like in this case, and you say, well, this seems, we plot this data, and you say, well, it seems to fit into two little groups. Here there's a little clustering of points on the bottom left, and there's a larger, kind of elongated cluster on the top right and so we might say, well, we can give a predefined number of clusters. We want two clusters and we can give that to the clustering algorithms and then they'll group these guys together. It'll make a split and it actually, in some cases, we don't need to specify the number of clusters. In fact, some algorithms, which is DBSCAN, are actually smart enough to be able to figure out how many clusters are based entirely on the data. But algorithms like k-means will actually need to be specified how many clusters that we have. And so, for example, this data scan is actually taken, it's a very famous data set called the Iris Dataset, collected by Ronald Fisher, which is, and here is a quick historical side note, he's probably the most important statistician of the 20th century. A lot of statistical techniques that we have that are used in all kinds of companies were originally some of his work, but he collected this dataset of flowers. He has 50 different of three different kinds of species of flowers and he plots their measured properties like petal width, petal length, sepal width, and sepal length, and they're all plotted out. In this case, what I've actually done is removed the class labels, because usually when we're doing clustering analysis, we don't have the correct labels. In fact, that's what the clustering is trying to give us. It's trying to give us some notion that these things belong together and these other things belong together. So this is just a kind of data that you might expect with some clustering. So clustering is taking our data and then putting it into groups such that the groups have some kind of similar properties or similar attributes here. So if we go back a slide here, so we have one cluster at the bottom left for example. That might be considered a cluster where the flowers in that cluster have a small petal length and a smaller petal width, for example. That's an example of grouping, as I'm talking about. And there's so many different applications of clustering analysis, not just used for something like data science. But also things like medical imaging for things like x-rays or MRIs or FMRIs. They use clustering analysis.
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Views: 41
Zenva

Let's detect the intruder trying to break into our security system using a very popular ML technique called K-Means Clustering! This is an example of learning from data that has no labels (unsupervised) and we'll use some concepts that we've already learned about like computing the Euclidean distance and a loss function to do this.
Code for this video:
https://github.com/llSourcell/k_means_clustering
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More learning resources:
http://www.kdnuggets.com/2016/12/datascience-introduction-k-means-clustering-tutorial.html
http://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_ml/py_kmeans/py_kmeans_understanding/py_kmeans_understanding.html
http://people.revoledu.com/kardi/tutorial/kMean/
https://home.deib.polimi.it/matteucc/Clustering/tutorial_html/kmeans.html
http://mnemstudio.org/clustering-k-means-example-1.htm
https://www.dezyre.com/data-science-in-r-programming-tutorial/k-means-clustering-techniques-tutorial
http://scikit-learn.org/stable/tutorial/statistical_inference/unsupervised_learning.html
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Views: 111927
Siraj Raval

K-means sorts data based on averages. Dr Mike Pound explains how it works.
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Dr. Mike's Code:
% This script is the one mentioned during the Computerphile Image
% Segmentation video. I chose matlab because it's a popular tool for
% quickly prototyping things. Matlab licenses are pricey, if you don't have
% one (or, like me, work for an organisation that does) try Octave as a
% good free alternative. This code should work in Octave too.
% Load in an input image
im = imread('C:\Path\Of\Input\Image.jpg');
% In matlab, K-means operates on a 2D array, where each sample is one row,
% and the features are the columns. We can use the reshape function to turn
% the image into this format, where each pixel is one row, and R,G and B
% are the columns. We are turning a W,H,3 image into W*H,3
% We also cast to a double array, because K-means requires it in matlab
imflat = double(reshape(im, size(im,1) * size(im,2), 3));
% I specify that initialisation shuold sample points at
% random, rather than anything complex like kmeans++ initialisation.
% Kmeans++ takes a long time if you are using 256 classes.
% Perform k-means. This function returns the class IDs assigned to each
% pixel, and in this case we also want the mean values for each class -
% what colour is each class. This can take a long time if the value for K
% is large, I've used the sampling start strategy to speed things up.
% While KMeans is running, it will show you the iteration count, and the
% number of pixels that have changed class since last iteration. This
% number should get lower and lower, as the means settle on appropriate
% values. For large K, it's unlikely that we will ever reach zero movement
% (convergence) within 150 iterations.
K = 3
[kIDs, kC] = kmeans(imflat, K, 'Display', 'iter', 'MaxIter', 150, 'Start', 'sample');
% Matlab can output paletted images, that is, grayscale images where the
% colours are stored in a separate array. This array is kC, and kIDs are
% the grayscale indices.
colormap = kC / 256; % Scale 0-1, since this is what matlab wants
% Reshape kIDs back into the original image shape
imout = reshape(uint8(kIDs), size(im,1), size(im,2));
% Save file out, you need to subtract 1 from the image classes, since once
% stored in the file the values should go from 0-255, not 1-256 like matlab
% would do.
imwrite(imout - 1, colormap, 'C:\Path\Of\Output\Image.png');
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This video was filmed and edited by Sean Riley.
Computer Science at the University of Nottingham: http://bit.ly/nottscomputer
Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Views: 189719
Computerphile

Provides illustration of doing cluster analysis with R.
R File: https://goo.gl/BTZ9j7
Machine Learning videos: https://goo.gl/WHHqWP
Includes,
- Illustrates the process using utilities data
- data normalization
- hierarchical clustering using dendrogram
- use of complete and average linkage
- calculation of euclidean distance
- silhouette plot
- scree plot
- nonhierarchical k-means clustering
Cluster analysis is an important tool related to analyzing big data or working in data science field.
Deep Learning: https://goo.gl/5VtSuC
Image Analysis & Classification: https://goo.gl/Md3fMi
R is a free software environment for statistical computing and graphics, and is widely used by both academia and industry. R software works on both Windows and Mac-OS. It was ranked no. 1 in a KDnuggets poll on top languages for analytics, data mining, and data science. RStudio is a user friendly environment for R that has become popular.

Views: 114852
Bharatendra Rai

Samory Kpotufe, Princeton University
Estimating the mode or modal-sets (i.e. extrema points or surfaces) of an unknown density from sample is a basic problem in data analysis. Such estimation is relevant to other problems such as clustering, outlier detection, or can simply serve to identify low-dimensional structures in high dimensional-data (e.g. point-cloud data from medical-imaging, astronomy, etc). Theoretical work on mode-estimation has largely concentrated on understanding its statistical difficulty, while less attention has been given to implementable procedures. Thus, theoretical estimators, which are often statistically optimal, are for the most part hard to implement. Furthermore for more general modal-sets (general extrema of any dimension and shape) much less is known, although various existing procedures (e.g. for manifold-denoising or density-ridge estimation) have similar practical aim. I’ll present two related contributions of independent interest: (1) practical estimators of modal-sets – based on particular subgraphs of a k-NN graph – which attain minimax-optimal rates under surprisingly general distributional conditions; (2) high-probability finite sample rates for k-NN density estimation which is at the heart of our analysis. Finally, I’ll discuss recent successful work towards the deployment of these modal-sets estimators for various clustering applications.
Much of the talk is based on a series of work with collaborators S. Dasgupta, K. Chaudhuri, U. von Luxburg, and Heinrich Jiang.

Views: 319
Center for Brains, Minds and Machines (CBMM)

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Introduction to Datawarehouse
Meta data in 5 mins
Datamart in datawarehouse
Architecture of datawarehouse
how to draw star schema slowflake schema and fact constelation
what is Olap operation
OLAP vs OLTP
decision tree with solved example
K mean clustering algorithm
Introduction to data mining and architecture
Naive bayes classifier
Apriori Algorithm
Agglomerative clustering algorithmn
KDD in data mining
ETL process
FP TREE Algorithm
Decision tree

Views: 39651
Last moment tuitions

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5 Minutes Engineering

#kmean datawarehouse #datamining #lastmomenttuitions
Take the Full Course of Datawarehouse
What we Provide
1)22 Videos (Index is given down) + Update will be Coming Before final exams
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Index
Introduction to Datawarehouse
Meta data in 5 mins
Datamart in datawarehouse
Architecture of datawarehouse
how to draw star schema slowflake schema and fact constelation
what is Olap operation
OLAP vs OLTP
decision tree with solved example
K mean clustering algorithm
Introduction to data mining and architecture
Naive bayes classifier
Apriori Algorithm
Agglomerative clustering algorithmn
KDD in data mining
ETL process
FP TREE Algorithm
Decision tree

Views: 466583
Last moment tuitions

This K Means clustering algorithm tutorial video will take you through machine learning basics, types of clustering algorithms, what is K Means clustering, how does K Means clustering work with examples along with a demo in python on K-Means clustering - color compression. This Machine Learning algorithm tutorial video is ideal for beginners to learn how K Means clustering work.
Below topics are covered in this K-Means Clustering Algorithm Tutorial:
1. Types of Machine Learning? ( 07:08 )
2. What is K Means Clustering? ( 00:10 )
3. Applications of K Means Clustering ( 09:27 )
4. Common distance measure ( 10:20 )
5. How does K Means Clustering work? ( 12:27 )
6. K Means Clustering Algorithm ( 20:08 )
7. Demo In Python: K Means Clustering ( 26:20 )
8. Use case: Color compression In Python ( 38:38 )
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Views: 32777
Simplilearn

The scikit learn library for python is a powerful machine learning tool.
K means clustering, which is easily implemented in python, uses geometric distance to create centroids around which our data can fit as clusters.
In the example attached to this article, I view 99 hypothetical patients that are prompted to sync their smart watch healthcare app data with a research team. The data is recorded continuously, but to comply with healthcare regulations, they have to actively synchronize the data. This example works equally well is we consider 99 hypothetical customers responding to a marketing campaign.
In order to prompt them, several reminder campaigns are run each year. In total there are 32 campaigns. Each campaign consists only of one of the following reminders: e-mail, short-message-service, online message, telephone call, pamphlet, or a letter. A record is kept of when they sync their data, as a marker of response to the campaign.
Our goal is to cluster the patients so that we can learn which campaign type they respond to. This can be used to tailor their reminders for the next year.
In the attached video, I show you just how easy this is to accomplish in python. I use the python kernel in a Jupyter notebook. There will also a mention of dimensionality reduction using principal component separation, also done using scikit learn. This is done so that we can view the data as a scatter plot using the plotly library.

Views: 44661
Juan Klopper

This video explains you about "What is Cluster? Why do we need Cluster? what are the types of Clusters? and Understand the Basic Cluster Concepts for Beginners".
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#cluster #highavailabilty #loadbalancer
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Views: 153798
LearnITGuide Tutorials

Attribute data and relationship data are two principle types of data, representing the intrinsic and extrinsic properties of entities. While attribute data has been the main source of data for cluster analysis, relationship data such as social networks or metabolic networks are becoming increasingly available. In many cases these two data types carry complementary information, which calls for a joint cluster analysis of both data types in order to achieve more natural clusterings. For example, when identifying research communities, relationship data could represent co-author relationships and attribute data could represent the research interests of scientists. Communities could then be identified as clusters of connected scientists with similar research interests. Our introduction of joint cluster analysis is part of a recent, broader trend to consider as much background information as possible in the process of cluster analysis, and in general, in data mining. In this talk, we briefly review related work including constrained clustering, semi-supervised clustering and multi-relational clustering. We then propose the Connected k-Center (CkC) problem, which aims at finding k connected clusters minimizing the radius with respect to the attribute data. We sketch the main ideas of the proof of NP-completeness and present a constant factor approximation algorithm for the CkC problem. Since this algorithm does not scale to large datasets, we have also developed NetScan, a heuristic algorithm that is efficient for large, real databases. We report experimental results from two applications, community identification and document clustering, both based on DBLP data. Our experiments demonstrate that NetScan finds clusters that are more meaningful and accurate than the results of existing algorithms. We conclude the talk with other promising applications and new problems of joint cluster analysis. In particular, we discuss the clustering of gene expression data and the hotspot analysis of crime data as well as a joint cluster analysis problem that does not require the user to specify the number of clusters in advance.

Views: 51
Microsoft Research

PyData NYC 2015
Clustering data into similar groups is a fundamental task in data science. Probability density-based clustering has several advantages over popular parametric methods like K-Means, but practical usage of density-based methods has lagged for computational reasons. I will discuss recent algorithmic advances that are making density-based clustering practical for larger datasets.
Clustering data into similar groups is a fundamental task in data science applications such as exploratory data analysis, market segmentation, and outlier detection. Density-based clustering methods are based on the intuition that clusters are regions where many data points lie near each other, surrounded by regions without much data.
Density-based methods typically have several important advantages over popular model-based methods like K-Means: they do not require users to know the number of clusters in advance, they recover clusters with more flexible shapes, and they automatically detect outliers. On the other hand, density-based clustering tends to be more computationally expensive than parametric methods, so density-based methods have not seen the same level of adoption by data scientists.
Recent computational advances are changing this picture. I will talk about two density-based methods and how new Python implementations are making them more useful for larger datasets. DBSCAN is by far the most popular density-based clustering method. A new implementation in Dato's GraphLab Create machine learning package dramatically speeds up DBSCAN computation by taking advantage of GraphLab Create's multi-threaded architecture and using an algorithm based on the connected components of a similarity graph.
The density Level Set Tree is a method first proposed theoretically by Chaudhuri and Dasgupta in 2010 as a way to represent a probability density function hierarchically, enabling users to use all density levels simultaneous, rather than choosing a specific level as with DBSCAN. The Python package DeBaCl implements a modification of this method and a tool for interactively visualizing the cluster hierarchy.
Slides available here: https://speakerdeck.com/papayawarrior/density-based-clustering-in-python
Notebooks: http://nbviewer.ipython.org/github/papayawarrior/public_talks/blob/master/pydata_nyc_dbscan.ipynb
http://nbviewer.ipython.org/github/papayawarrior/public_talks/blob/master/pydata_nyc_DeBaCl.ipynb

Views: 17423
PyData

In this video I walk you through how to run and interpret a hierarchical cluster analysis in SPSS and how to infer relationships depicted in a dendrogram. Here is a link to the data: https://drive.google.com/file/d/0B3T1TGdHG9aEbXBEMnZxQU43Qjg/view?usp=sharing

Views: 123197
James Gaskin

This video is about KMedoid Clustering with NLP example

Views: 18659
Subalalitha Navaneethakrishnan

To find groups of parallel lines in an image with noise DBSCAN is a good algorithm to postprocess hough lines data. Qt, matplotlib enable us to understand the calculated data and support the fine tuning.

Views: 743
microelly

#ClusterAnalysis | A tutorial on Cluster Analysis using real-life examples. Learn the objective of cluster analysis, the methodology used and interpreting results from the same.
Cluster analysis is an exploratory data analysis tool which aims at sorting different objects into groups in a way that the degree of association between two objects is maximal if they belong to the same group and minimal otherwise.
Clustering methods can be classified into the following categories −
- Partitioning Method
- Hierarchical Clustering
- Density-based Method
- Grid-Based Method
- Model-Based Method
- Constraint-based Method
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Views: 34365
Great Learning

In this example I am describing the process of clustering using the Pharmaceutical industry dataset.

Views: 12197
Michael Rechenthin

Links of data set used in the video:
1. https://drive.google.com/open?id=1LRCQ8W08jOwFgLbOuIXJQxSRvHJqOVXd
2. https://drive.google.com/open?id=1KEI7drvBEsfGyrSbDPuQRhgRTg-lriEs

Views: 2011
Dr. Shailesh Kaushal

Learn the basics of Machine Learning with R. Start our Machine Learning Course for free: https://www.datacamp.com/courses/introduction-to-machine-learning-with-R
First up is Classification. A *classification problem* involves predicting whether a given observation belongs to one of two or more categories. The simplest case of classification is called binary classification. It has to decide between two categories, or classes. Remember how I compared machine learning to the estimation of a function? Well, based on earlier observations of how the input maps to the output, classification tries to estimate a classifier that can generate an output for an arbitrary input, the observations. We say that the classifier labels an unseen example with a class.
The possible applications of classification are very broad. For example, after a set of clinical examinations that relate vital signals to a disease, you could predict whether a new patient with an unseen set of vital signals suffers that disease and needs further treatment. Another totally different example is classifying a set of animal images into cats, dogs and horses, given that you have trained your model on a bunch of images for which you know what animal they depict. Can you think of a possible classification problem yourself?
What's important here is that first off, the output is qualitative, and second, that the classes to which new observations can belong, are known beforehand. In the first example I mentioned, the classes are "sick" and "not sick". In the second examples, the classes are "cat", "dog" and "horse". In chapter 3 we will do a deeper analysis of classification and you'll get to work with some fancy classifiers!
Moving on ... A **Regression problem** is a kind of Machine Learning problem that tries to predict a continuous or quantitative value for an input, based on previous information. The input variables, are called the predictors and the output the response.
In some sense, regression is pretty similar to classification. You're also trying to estimate a function that maps input to output based on earlier observations, but this time you're trying to estimate an actual value, not just the class of an observation.
Do you remember the example from last video, there we had a dataset on a group of people's height and weight. A valid question could be: is there a linear relationship between these two? That is, will a change in height correlate linearly with a change in weight, if so can you describe it and if we know the weight, can you predict the height of a new person given their weight ? These questions can be answered with linear regression!
Together, \beta_0 and \beta_1 are known as the model coefficients or parameters. As soon as you know the coefficients beta 0 and beta 1 the function is able to convert any new input to output. This means that solving your machine learning problem is actually finding good values for beta 0 and beta 1. These are estimated based on previous input to output observations. I will not go into details on how to compute these coefficients, the function `lm()` does this for you in R.
Now, I hear you asking: what can regression be useful for apart from some silly weight and height problems? Well, there are many different applications of regression, going from modeling credit scores based on past payements, finding the trend in your youtube subscriptions over time, or even estimating your chances of landing a job at your favorite company based on your college grades.
All these problems have two things in common. First off, the response, or the thing you're trying to predict, is always quantitative. Second, you will always need input knowledge of previous input-output observations, in order to build your model. The fourth chapter of this course will be devoted to a more comprehensive overview of regression.
Soooo.. Classification: check. Regression: check. Last but not least, there is clustering. In clustering, you're trying to group objects that are similar, while making sure the clusters themselves are dissimilar.
You can think of it as classification, but without saying to which classes the observations have to belong or how many classes there are.
Take the animal photo's for example. In the case of classification, you had information about the actual animals that were depicted. In the case of clustering, you don't know what animals are depicted, you would simply get a set of pictures. The clustering algorithm then simply groups similar photos in clusters.
You could say that clustering is different in the sense that you don't need any knowledge about the labels. Moreover, there is no right or wrong in clustering. Different clusterings can reveal different and useful information about your objects. This makes it quite different from both classification and regression, where there always is a notion of prior expectation or knowledge of the result.

Views: 41104
DataCamp

Views: 1002
iTeach

** Python Training for Data Science: https://www.edureka.co/python **
This Edureka Machine Learning tutorial (Machine Learning Tutorial with Python Blog: https://goo.gl/fe7ykh ) series presents another video on "K-Means Clustering Algorithm". Within the video you will learn the concepts of K-Means clustering and its implementation using python. Below are the topics covered in today's session:
1. What is Clustering?
2. Types of Clustering
3. What is K-Means Clustering?
4. How does a K-Means Algorithm works?
5. K-Means Clustering Using Python
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Programmers love Python because of how fast and easy it is to use. Python cuts development time in half with its simple to read syntax and easy compilation feature. Debugging your programs is a breeze in Python with its built in debugger. Using Python makes Programmers more productive and their programs ultimately better. Python continues to be a favorite option for data scientists who use it for building and using Machine learning applications and other scientific computations.
Python runs on Windows, Linux/Unix, Mac OS and has been ported to Java and .NET virtual machines. Python is free to use, even for the commercial products, because of its OSI-approved open source license.
Python has evolved as the most preferred Language for Data Analytics and the increasing search trends on python also indicates that Python is the next "Big Thing" and a must for Professionals in the Data Analytics domain.
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Views: 53377
edureka!

Enroll in the course for free at: https://bigdatauniversity.com/courses/machine-learning-with-python/
Machine Learning can be an incredibly beneficial tool to uncover hidden insights and predict future trends.
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Look at real-life examples of Machine learning and how it affects society in ways you may not have guessed!
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Views: 15309
Cognitive Class

How to generate a Scree Plot for Hierarchical Cluster in R?
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for more details on cluster analysis using SAS and R -- https://www.udemy.com/cluster-analysis-motivation-theory-practical-application/?couponCode=FB_CA_001
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link to R code - https://drive.google.com/file/d/0Byo-GmbU7XciVGRQcTk3QzdTMjA/view?usp=sharing

Views: 2314
Gopal Malakar

IEEE CIS Cyprus Chapter, Region 8
Date: 31 October 2012
Time: 17:00 -- 19:00
Location: University of Cyprus, Cyprus
Presentation: http://www.slideshare.net/ieee_cis_cyprus/prof-jim-bezdek-every-picture-tells-a-story-visual-cluster-analysis
The talk overviews the history of Visual Clustering, which began thousands of years ago. The first image for this appeared in 1873. Three algorithms for visual assessment of clustering tendency examined, namely the VAT, iVAT and asiVAT, with applications to social network analysis. Particularly three applications, one for each algorithm will be discussed: time series analysis with clusters of linguistic medoid prototypes in Eldercare data (iVAT); social network analysis with Sampson's Monastery data (asiVAT); and network access security (VAT), a commercial application developed by CA technologies.
Help us caption & translate this video!
http://amara.org/v/CjLm/

Views: 826
CIS Cyprus

Gaurav Vohra, the founder of Jigsaw Academy presents another video on analytics techniques. Here we talk about the concept of scaling, various scaling techniques and their application in Cluster analysis.
Jigsaw Academy is an award winning premier online analytics training institute that aims to meet the growing demand for talent in the field of analytics by providing industry-relevant training to develop business-ready professionals.Jigsaw Academy has been acknowledged by blue chip companies for quality training
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Views: 6231
Jigsaw Academy

NTSYSpc is one of the most popular software being used in molecular genetic qualitative data
cluster analysis (Jamshidi and Jamshidi, 2011)

Views: 14968
Irwan Nirwana

© 2019 How to earn money on online without any investment

Today are dozens of websites dedicated to cryptocurrencies, either holding them, exchanging them or just writing about them. Probably the most effective advertising remains on Google, it is called Google Search and it is free. If someone wants to learn about owning bitcoin or any other currency, there is a ton of educational information. The Flipside Is Being Ignored. Not All Regulation Is Inherently Bad. If we examine the full spectrum of regulation to this point on a global scale there is one common target most everywhere. That is the practice of exchanges. So far there has been little or not regulation, threatened or enacted, to protect investors from loss of funds due to security breaches. Capitulation Is A Good Sign.