In this video Jarlath Quinn takes a first look at SPSS Modeler v18.2 and demonstrates some of the new functionality that’s included within this release. IBM® SPSS® Modeler adds the following features in this release. New look and feel. A new modern interface theme is available via Tools > User Options > Display. For instructions on switching to the new theme. New data views. You can now right-click a data node and select View Data to examine and refine your data in new ways with advanced data visualizations. IBM Data Warehouse. Database modeling with IBM Netezza Analytics now supports IBM Data Warehouse. Gaussian Mixture node. A new Gaussian Mixture node is available on […]
Smart Vision offer a free copy of SPSS Statistics that will give you access to the software for a trial period of two weeks. This video will talk you through how to download and install the software before providing a series of examples of procedures that you might want to try out yourself in order to explore SPSS. You should be aware that the trial software includes all of the SPSS Statistics optional add on modules and you can find out more about these modules and see a two minute overview of each one elsewhere on this site. Once installed […]
You may have noticed by now that there seem to be a couple of recurring themes in the plethora of articles and news programmes about artificial intelligence (AI). These themes can be summed up as a) “The dangers of AI” and b) “The limitations of AI”. Articles addressing the dangers of AI tend to focus on issues such as the threat of widespread job losses to AI, the possibility of inherent bias (such as racism and sexism), the lack of transparency in decisions made by AI systems and, as a result, the inability to plead your case with AI (“Computer […]
In this video Jarlath Quinn demonstrates how to merge data files within SPSS Statistics using each of the two main methods, either adding cases (combining files with the same fields but additional rows) or adding variables (combining files by joining variables to a target file using something like an ID field as a ‘keyed variable’).
SPSS users often want to be able to create grouped or banded data from continuous fields such as, for example, creating age groups or income bands from continuous fields. In this video Jarlath Quinn demonstrates how to use the visual binning procedure within SPSS Statistics to do this including how to control the proportion of cases that fall into each band and how to automatically create value labels.
Recoding your data means changing the values of a variable so that they represent something else. Within SPSS Statistics there is more than one type of recode that can be performed. In this video Jarlath Quinn demonstrates how to:- Recode into the same variables, overwriting an existing variable Recode into different variables, creating a new variable in addition to your existing variables Automatically recode, a particular procedure designed to change string codes into numeric codes Visual binning, visualising a distribution in the form of a histogram and slicing it into ranged categories
When you’re deciding which tests to run on your data it’s important to understand whether your data is normally distributed or not, as a lot of standard parametrical tests assume a normal distribution whereas other non-parametric tests are designed to be run on data which is not normally distributed. A normal distribution has a number of characteristics:- It is symmetrical It is bell-shaped Its mean, median and mode all appear at the same place Normal distributions can be divided up into the same proportions by the standard deviations, so 95% of the area under the curve lies within roughly plus […]
In this video Jarlath Quinn demonstrates how to work with date and time variables in SPSS using the SPSS date and time wizard. This enables you to:- Calculate time units between two dates Add / subtract time units to or from dates Extract part of a date or a time, such as days of the week or months of the year Create date or time variables from variables holding part of dates or times
In this video Jarlath Quinn demonstrates how to use SPSS Statistics to define data filters in order to select particular cases for analysis. This can be done either to create a temporary selection or to create a permanent new file with only a subsection of cases included within it. The video demonstrates how to do this with string variables too, as well as how to combine conditions from multiple variables in your selection.
In this video Jarlath Quinn demonstrates how to reverse the values of a rating scale (such as an agreement scale or a satisfaction scale) in SPSS Statistics, so that the highest value becomes the lowest value and vice versa. Jarlath shows two methods of doing this – one using the compute procedure and the other using the recode procedure.
SPSS users often want to know how they can combine variables together. In this video Jarlath Quinn demonstrates how to use the compute procedure to calculate the mean of a number of variables to create one combined variable, and also how to use the count values procedure to count how many times a particular value occurs across a series of variables in order to create an overall count.
In this video Jarlath Quinn introduces the popular TURF analysis technique and demonstrates how to apply it in IBM SPSS Statistics. TURF analysis is used in many industries to find the optimal sub-group of options from a wider portfolio in order to maximise their appeal to an audience or market. As such, TURF analysis is used to: Find the best assortment of SKU’s that appeal to the largest group of customers Identify the best 3 publications to reach the largest share of market Discover the optimal assortment of services to entice the most new clients Note, TURF analysis functionality is […]
In this video Jarlath Quinn explains what cluster analysis is, how it is applied in the real world and how easy it is create your own cluster analysis models in SPSS Statistics. The video includes: A demonstration of cluster analysis using sample data How to use the cluster viewer facility to interpret and make sense of the analysis results How to apply a cluster model to a data file and rename the groups to make them meaningful to non-experts How use cluster analysis to illustrate how a customer base changes over time
This is the third in a regular series of videos about SPSS Modeler, designed to help you better understand some of the functions that are available within the package. If you’re an experienced user or you have been on one of our training courses then you’ll probably already be familiar with most of these, but if you’re a new user, you’re self-taught, or you’re currently evaluating the software then there’s likely to be a number of things in these videos that you’ll find helpful. Sometimes you may have problems with your data issues not related so much to the values of […]
This series of videos aims to help you get the best out of SPSS Statistics by using some tools and techniques that a lot of people don’t know about but that we know you’ll find useful. Working with variable sets in SPSS Statistics In this video we explore variable sets – a procedure in SPSS that allows you to generate subsets of variables or fields for display within dialogue boxes and in the data editor itself. This is particularly useful if you are working with a very wide dataset with lots of variables making it very hard to find the […]
This is the second in a regular series of videos about SPSS Modeler, designed to help you better understand some of the functions that are available within the package. If you’re an experienced user or you have been on one of our training courses then you’ll probably already be familiar with most of these, but if you’re a new user, you’re self-taught, or you’re currently evaluating the software then there’s likely to be a number of things in these videos that you’ll find helpful. SPSS Modeler generate menu – the super-quick way to create new fields If you watched the previous […]
In classical statistics, linear regression is regarded as the ‘gateway to predictive modelling’. For decades students have been taught about regression from theory to practice simply because it still one of the most versatile and simple ways to understand and predict the effect of key factors on critical outcomes. For instance, using regression you can: Estimate and predict outcomes such as revenue from sales, machine repair costs, traffic volumes or asset failure rates Predict what effect a change in advertising spend or price will have on your sales Understand the relative strength of different factors that influence your sales – […]
We often talk to people who are unsure whether they need SPSS Statistics or whether SPSS Modeler might be more suited to their needs. In fact, it’s not always a clear cut choice as to which tool is more appropriate as it depends on the context in which the technology might be used. With that in mind I thought it might be helpful to develop a little infographic to lay out the sorts of things that you should be thinking about when choosing between SPSS Modeler and SPSS Statistics. We can think of the choice as a sort of continuum, […]
This series of videos aims to help you get the best out of SPSS Statistics by using some tools and techniques that a lot of people don’t know about but that we know you’ll find useful. Changing the default settings of SPSS Statistics SPSS enables quite a high level of customisation so you can set up the software in a way that enables you to be a lot more productive, however many people are unaware of just how powerful these customisation options are. In this video we explore the options edit menu and show you how you can:- Change the […]
This is the first in a regular series of videos about SPSS Modeler, designed to help you better understand some of the functions that are available within the package. If you’re an experienced user or you have been on one of our training courses then you’ll probably already be familiar with most of these, but if you’re a new user, you’re self-taught, or you’re currently evaluating the software then there’s likely to be a number of things in these videos that you’ll find helpful. SPSS Modeler data audit node – the Swiss army knife of data cleaning The data […]
Over the past two years I’ve noticed a steady stream of articles in the mainstream press and business journals centred on the themes of a) the dangers of machine learning 1 2 or b) the limitations of machine learning 3 4. Many of these articles refer to incidents where machine learning initiatives have echoed and exasperated our own biases, prejudices and (frankly racist) behaviours 5. Others have focused on their limitations with providing the sorts of ‘informed, idiosyncratic’ recommendations that humans find effortless. However, for those of us that work in the field of predictive analytics where many of the […]
Contemporary analytical platforms like SPSS and SAS represent the some of the earliest and yet longest-lived examples of proprietary software in the industry. When we think of the tectonic shifts the technology landscape has witnessed in last four decades, through the mainframe era, the rise of the PC, browser wars, the dotcom bubble, the smartphone revolution to the age of the cloud and big data not to mention the number of once seemingly ubiquitous software tools that no longer dominate the marketplace, it’s incredible to think that the first versions of SPSS and SAS were developed as far back as […]
In this four part series Jarlath Quinn demonstrates Smart Vision’s new Repeatable Application Template, Predictive Operational Analytics. This Application Template combines market leading predictive analytical software, ready to use application templates and a fully supported professional services package to ensure rapid and effective implementation and deployment. Using IBM’s flagship data science tool, SPSS Modeler, Jarlath works through a case study example where a telecoms maintenance company applied the template in order to: 1) Apply sophisticated text mining to error messages and engineer logs 2) Develop a predictive model that identified whether or not a maintenance task would result is an […]
In part two of our predictive operational analytics video series, Jarlath Quinn introduces the IBM SPSS Modeler Software before showing how to explore the example data from the case study and carry out text analytics of engineer logs to categorise the information and create key fields for further analysis. Watch part three of this series.
In part 3 of this predictive operational analytics guide Jarlath uses the results from the previous analysis stage to show how to build and assess a predictive model that identifies whether or not a part replacement will be required during a maintenance visit. We also see how to apply the model to new data so that predictions can be generated before the engineer is dispatched. Watch part four of this series.
In this final part of our predictive operational analytics video series Jarlath shows how we can use the predictive technology to go further by predicting the actual outcome of the visit including which part is likely to require replacement. In the final example we see how to build a model that predicts whether or not a site will require another unscheduled visit within 20 days.
In this video Jarlath shows how to automatically produce a model that predicts customer’s recommendation scores based upon transactional and operational data. We can also see how we can evaluate the model accuracy and browse its contents to uncover what are the key fields in the transactional and operational data that the model has chosen to make its predictions before finally examining the rules that the model has uncovered to estimate the guest’s recommendation class.
In this video Jarlath shows how easy it is to take a previously built model that has been generated based on known outcomes and apply it to customer data where the outcome is not known. Using the results from part 2 of this series, Jarlath applies the model to the hundreds of guests who have not provided a recommendation rating so that the hotel chain can estimate whether they are Detractors, Passives or Promoters. At the end of the video we see how the solution was able to identify what the hotel management referred to as ‘Persuadables’ – these were […]
In this final part of our predictive promoter video series, Jarlath Quinn tackles the project’s most ambitious task: mining the open-ended guest comments to uncover important insights. Here you can discover how we can use text analytics to extract a series of concepts and sentiments from customer comments in order to categorise the guests’ responses. By visualizing the relationships between these key concepts we are able to see what aspects of the guests experiences are most strongly correlated with positive evaluations. Moreover, by categorising the responses we are able to use the text data to build a model that reveals the […]