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  • Data Mining Algorithms – K-Means Clustering

    Hierarchical clustering could be very useful because it is easy to see the optimal number of clusters in a dendrogram and because the dendrogram visualizes the clusters and the process of building of that clusters. However, hierarchical methods don’t scale well. Just imagine how cluttered a dendrogram would be if 10,000 cases would be shown on ...
    Posted to Dejan Sarka (Weblog) by Dejan Sarka on April 17, 2015
  • Data Mining Algorithms – Hierarchical Clustering

    Clustering is the process of grouping the data into classes or clusters so that objects within a cluster have high similarity in comparison to one another, but are very dissimilar to objects in other clusters. Dissimilarities are assessed based on the attribute values describing the objects. There are a large number of clustering algorithms. The ...
    Posted to Dejan Sarka (Weblog) by Dejan Sarka on March 28, 2015
  • Data Mining Algorithms – an Introduction

    Data mining is the most advanced part of business intelligence. With statistical and other mathematical algorithms, you can automatically discover patterns and rules in your data that are hard to notice with on-line analytical processing and reporting. However, you need to thoroughly understand how the data mining algorithms work in order to ...
    Posted to Dejan Sarka (Weblog) by Dejan Sarka on February 19, 2015
  • PASS SQL Saturday #356 Slovenia Pre-Conference Seminars

    I am proud and glad I can announce two top pre-conference seminars at the PASS SQL Saturday #356 Slovenia conference. The speakers and the seminars titles are: Stacia Misner - Power Up Your Data with Excel and Power BI Kevin Boles - Tune Like A Guru! Both seminars will take place on Friday, December 12th, in the classrooms of our sponsor ...
    Posted to Dejan Sarka (Weblog) by Dejan Sarka on September 29, 2014
  • 24 Hours of PASS (September 2014): Recordings Now Available!

    Sessions of the event 24 Hours of PASS: Summit Preview Edition (which was held on last September 9th) were recorded and now they are available for online streaming! If you have missed one session in particular or the entire event, you can view it or review your preferred sessions; you can find all details here. What could you aspect from ...
    Posted to Sergio Govoni (Weblog) by Sergio Govoni on September 24, 2014
  • 24 Hours of PASS (September 2014): Summit Preview Edition

    Which sessions you can expect to find at the next PASS Summit 2014 ? Find it out on September 09, 2014 (12:00 GMT) at the free online event: 24 Hours of PASS: Summit Preview Edition. Register now at this link. No matter from what part of the world you will follow the event, the important thing is to know that they will be 24 hours of ...
    Posted to Sergio Govoni (Weblog) by Sergio Govoni on August 12, 2014
  • 24 Hours of PASS (June 2014): Recordings Now Available!

    Sessions of the event 24 Hours of PASS: SQL Server 2014 (which was held on last June at 25th and 26th) were recorded and now they are available for online streaming!   If you have missed one session (in particular) or the entire live event, you can view it or review your preferred sessions here. What could you aspect from the next PASS ...
    Posted to Sergio Govoni (Weblog) by Sergio Govoni on July 8, 2014
  • 24 hours of PASS is back!

    The most important free on-line event on SQL Server and Business Intelligence is back! The 24 Hours of PASS is coming back with a great edition fully based on the new features of SQL Server 2014. Register now at this link. No matter from what part of the world you will follow the event, the important thing is to know that it will be 24 ...
    Posted to Sergio Govoni (Weblog) by Sergio Govoni on June 5, 2014
  • PASS DW/BI Virtual Chapter Upcoming Sessions (December 2013)

    Let me point out the upcoming live events scheduled for December 2013 organized by PASS Business Intelligence Virtual Chapter.   Create and Load a Staging Environment from Scratch in an Hour with Biml Date: Thursday 12 December Noon PST / 3 PM EST / 8 PM GMTSpeaker: Scott CurrieURL: ...
    Posted to Sergio Govoni (Weblog) by Sergio Govoni on December 6, 2013
  • 24 Hours of PASS (July 2013): Recordings Now Available!

    The sessions of the event 24 Hours of PASS: Summit Preview (which was held on last July 31) were recorded and now they are available for online streaming! If you have missed one session in particular or the entire live event, you can view and review your preferred sessions; you can find all details here. This edition of 24 Hours of PASS wants ...
    Posted to Sergio Govoni (Weblog) by Sergio Govoni on August 6, 2013
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