A summary of the lectures in the course of 1BM110 - Data Driven Artificial Intelligence for the master track Innovation Management in Industrial Engineering / Technische Bedrijfskunde given at the Eindhoven University of Technology.
, Lecture 1 – Data Visualization & Preprocessing
Data Visualization
This concept falls under the data understanding block in the CRISP-DM Framework.
Figure 1: CRISP-DM Framework.
It is important for understanding your data (trends, patterns, anomalies, outliers) and for illustrating the results
of your predictions (comparing and evaluating models). There are three types of data we can visualize:
categorial data, numerical data and relationships.
Categorical Data
A pie chart is an illustration of the relative amounts for a particular variable.
Figure 2: Pie chart
A bar chart is an illustration of amounts for one or more variables.
Figure 3: Bar chart
2
,A mosaic plot shows mosaic tiles, which are proportional to variable combinations in the data. It needs at least
two variables. The horizontal lines indicate the proportions for the first variable, while the vertical lines do so
for the other variable(s).
Figure 4: Mosaic Plot
Numerical Data
A bar chart is an illustration of the amounts for one or more variables. There are several variations for
numerical data: normal, clustered, and stacked.
Figure 5: Bar Chart
A line plot illustrates the data points and connects them with lines. Don’t use too many data points on the x-
axis, a scatter plot is better for this. Don’t have different y measurement for the same value of x.
3
, Figure 6: Line Plot
A scatter plot illustrates all points for the combination of variables. It allows for plotting a trend / regression
line.
Figure 7: Scatter Plot
Non-numerical data
Text can be visualized in a tag cloud.
Figure 8: Tag Cloud
4
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller rutgervandoorslaer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.55. You're not tied to anything after your purchase.
