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Guest Columnist: Nick Burns

SQLServerCentral.com profile

   Items 1 to 13 of 13   
 

Moving beyond principal components analysis

Principal components analysis is a standard, but usually terrible, technique for visualising complex data. We're using network diagrams to solve this problem.  Read more...
By Nick Burns 2017/09/19 | Source: SQLServerCentral.com | Category: r language
Rating: |  Discuss |   Briefcase | 416 reads

The Shortcomings of Predictive Accuracy

In prediction, accuracy is key. But it's not all it's cracked up to be as we will explore.  Read more...
By Nick Burns 2017/09/07 | Source: SQLServerCentral.com | Category: r language
Rating: |  Discuss |   Briefcase | 703 reads

Pattern Recognition via Principal Components Analysis

We'll look at using principal components analysis to help visualise your data and detect underlying structure or patterns.  Read more...
By Nick Burns 2017/09/12 | Source: SQLServerCentral.com | Category: r language
Rating: |  Discuss |   Briefcase | 696 reads

Machine Learning for Outlier Detection in R

A look into clustering to detect outliers in R. An extension on univariate statistical tests to include multivariate data.  Read more...
By Nick Burns 2017/07/05 | Source: SQLServerCentral.com | Category: r language
Rating: |  Discuss |   Briefcase | 642 reads

Scoring Outliers in Non-Normal Data with R

Using R to detect outliers is relatively easy, but most methods assume your data is normally distributed. How do you handle skewed datasets?  Read more...
By Nick Burns 2017/06/29 | Source: SQLServerCentral.com | Category: outlier detection
Rating: |  Discuss |   Briefcase | 596 reads

Scoring Outliers with R

What is normal? More to the point, what is abnormal? We will look at using R to score outliers in a typical monitoring dataset.  Read more...
By Nick Burns 2017/06/19 | Source: SQLServerCentral.com | Category: r language
Rating: |  Discuss |   Briefcase | 802 reads

What is normal? Finding outliers with R

How do you currently set alerting thresholds? What is normal? And more importantly, what is truly abnormal? We will explore these questions.  Read more...
By Nick Burns 2017/06/13 | Source: SQLServerCentral.com | Category: r language
Rating: |  Discuss |   Briefcase | 974 reads

Using R to Identify Key Features Quickly

Typical BI dashboards display data summaries like counts and averages. We use R to extend on these to identify key associations in a dataset.  Read more...
By Nick Burns 2017/01/09 | Source: SQLServerCentral.com | Category: visual analytics
Rating: |  Discuss |   Briefcase | 2,235 reads

Beyond prediction with R & SQL Server

Predictive / prescriptive analytics is regarded the highest level of advanced analytics. In this post, we emphasise the importance of exploratory analytics to derive meaningful insight.  Read more...
By Nick Burns 2016/08/18 | Source: SQLServerCentral.com | Category: r language
Rating: |  Discuss |   Briefcase | 2,009 reads

Configuring R Services in SQL Server 2016

R Services provides in-database analytics in SQL Server 2016. In this article we step through configuring R Services and get you started with in-database analytics.  Read more...
By Nick Burns 2016/01/27 | Source: SQLServerCentral.com | Category: revolutionr
Rating: |  Discuss |   Briefcase | 3,637 reads

Analysing Sales Patterns: R + SQL Server

We show how to use RevolutionR to analyse & visualise purchasing behaviours in AdventureWorksDW2012.  Read more...
By Nick Burns 2017/08/18 (first published: 2015/12/15) | Source: SQLServerCentral.com | Category: revolutionr
Rating: |  Discuss |   Briefcase | 7,106 reads

Combining R and SQL Server to diagnose performance bottlenecks

Using clustering algorithms to analyse index usage data from SQL Server’s DMVs & simplify complex performance investigations.  Read more...
By Nick Burns 2017/05/29 (first published: 2015/12/07) | Source: SQLServerCentral.com | Category: performance
Rating: |  Discuss |   Briefcase | 9,087 reads

Adding an Article Without a Full Snapshot

Have you got transactional replication in your SQL environment? Do you need to add a new table to your publication, but can't afford the time necessary to create a full new snapshot? Here is a step-by-step guide. Thankfully, adding a single table is easier than I thought.  Read more...
By Nick Burns 2015/01/05 | Source: SQLServerCentral.com | Category: replication
Rating: |  Discuss |   Briefcase | 3,128 reads
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