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 Regression


Regression (LR and MLR) and differences, not for the Economy. Professional analyst should be able to answer these three questions.

@machinelearnbot

To produce a regression analysis of inference that can be justified or trustworthy in the sense that helpful. The term in the statistical methods that generate a linear the best estimator is not bias (best linear unbiased estimator) abbreviated BLUE. Then there are some other things that are also important to note, in which the data to be processed, must meet certain requirements. All terms or phases of the classical assumptions that must be met, in order to build a regression model that could be accounted for. Thus, the need to test that assumption is intended to meet some of the elements of the accuracy of the parameter estimator is not biased to reflect the efficient level of analysis results are consistent so that the regression equation can be trusted.


Analyzing Vocabulary Intersections of Expert Annotations and Topic Models for Data Practices in Privacy Policies

AAAI Conferences

Privacy policies are commonly used to inform users about the data collection and use practices of websites, mobile apps, and other products and services. However, the average Internet user struggles to understand the contents of these documents and generally does not read them. Natural language and machine learning techniques offer the promise of automatically extracting relevant statements from privacy policies to help generate succinct summaries, but current techniques require large amounts of annotated data. The highest quality annotations require law experts, but their efforts do not scale efficiently. In this paper, we present results on bridging the gap between privacy practice categories defined by law experts with topics learned from Non-negative Matrix Factorization (NMF). To do this, we investigate the intersections between vocabulary sets identified as most significant for each category, using a logistic regression model, and vocabulary sets identified by topic modeling. The intersections exhibit strong matches between some categories and topics, although other categories have weaker affinities with topics. Our results show a path forward for applying unsupervised methods to the determination of data practice categories in privacy policy text.


Senior Data Scientist - @adam_rab (Python, SAS, Hadoop, R, Matlab, Machine learning, natural language processing, CPlex, C , etc.)

#artificialintelligence

My clients are looking for computer scientists, statisticians, biostatisticians, physicists, computational social scientists, economists, engineers, operations researchers- in short they are looking for Data Scientist with strong hands on experience in "Big Data" as well as predictive modeling, optimization, machine learning, neural networks using a range of advanced technical tools (Python, SAS, Hadoop, R, Matlab, Machine learning, natural language processing, CPlex, C, etc.) This is a position that will be responsible for helping develop quantitative solutions to solve complex applications. The candidates will be involved in developing leading-edge, "out of the box" advanced analytic solutions and processes. Substantial data analysis experience utilizing standard tools such as SAS, SPSS, or R In depth knowledge of standard algorithms such as linear regression, logistic regression, clustering, decision trees, and affinity analysis Very strong SQL skills including complex query structures Comfort with relational database theory, third normal form, and data models Previous presales experience in the software industry and an understanding of sales cycles: partnering with account executives, sales approaches, and sales support for large customers. Sufficient depth and breadth of technical knowledge to design and scope multiple deliverables across a number of technologies Demonstrated innovation and communication of new deliverables and offerings.


josdem

#artificialintelligence

In supervised learning, we are given a data set and already know what our correct output should look like, having the idea that there is a relationship between the input and the output. Linear regression with one variable is also known as "univariate linear regression." Univariate linear regression is used when you want to predict a single output value from a single input value . We're doing supervised learning here, so that means we already have an idea about what the input/output cause and effect should be. The "error", at each point, between the line fit and the data is the difference between the right- and left-hand sides of the equations above.


An Introduction to MM Algorithms for Machine Learning and Statistical

arXiv.org Machine Learning

MM (majorization--minimization) algorithms are an increasingly popular tool for solving optimization problems in machine learning and statistical estimation. This article introduces the MM algorithm framework in general and via three popular example applications: Gaussian mixture regressions, multinomial logistic regressions, and support vector machines. Specific algorithms for the three examples are derived and numerical demonstrations are presented. Theoretical and practical aspects of MM algorithm design are discussed.



sparklyr -- R interface for Apache Spark

#artificialintelligence

H2O Sparkling Water supports a wide array of algorithms, and as illustrated above it's easy to chain these functions together with dplyr pipelines. To learn more see the H2O Sparkling Water section.



Questions and Answers on Machine Learning with R

#artificialintelligence

Recently, I did a webinar on Machine Learning and R. I received a number of questions during the presentation. Due to time constraints, I was unable to answer all of them, so I have provided the Question and Answers here. Question: Can I Use R in SQL Server to plot non-linear regression curves? We use IC50 and others in Michaelis-Menten kinetics for bio-chemical work. R running on SQL Server provides the functionality of standard CRAN R packages with the additional capability to run the SCALER functions provided by SQL Server's implementation of R. Any other functionality performed in R can therefore also be performed on SQL Server.


Lauren Oldja, MSPH - Supervised Learning at the Movies

#artificialintelligence

For those following along here or on my Twitter account it's no secret that I am currently enrolled at Metis in their 12-week data science bootcamp, which marries the structure of daily morning problem solving with highly self-guided and project-based afternoons/evenings/weekends. The expectations are high, and the deadlines are "intentionally unfair", giving the three months a hackathon-lite vibe. Some projects featured on this blog, this post included, accompany projects completed and presented for Metis. For this project I scraped Box Office Mojo in order to build a predictive linear regression model. At first blush, predicting domestic box office gross is hardly worthy of machine learning: instinctively we know it must be a function of increasing marketing and production budgets.