Week 23 · learning day 2
Dataset and corpus preparation
Social Media and Text Mining Tools & Techniques · 45–60 minutes
Today’s outcomes
- Explain dataset and corpus preparation in the context of social media and text mining tools & techniques.
- Compare a product decision using the source outcome rather than intuition alone.
- Produce a reusable section of a text-analysis findings note.
Source trace
W23-O02Explain text mining tools and techniques.
Core lesson
Make the choice inspectable
Dataset and corpus preparation matters when it changes a real allocation of attention, money, time, or delivery capacity. Text analysis converts unstructured language into evidence while preserving context.
Start by naming the decision and the uncertainty around it. Separate evidence from assumptions, compare at least one alternative, and state what would make you revise the choice.
The source outcome for today is: Explain text mining tools and techniques.
What decision will dataset and corpus preparation improve, what evidence is sufficient for that decision, and what is the cost of being wrong?
Worked example
Dataset and corpus preparation in practice
For a reader-feedback analysis service, the product manager must compare a choice about dataset and corpus preparation. The team records the target user and outcome, the evidence currently available, the strongest alternative, and the next reversible test. The recommendation is written as a choice with a reason—not as a list of features.
Do the work · 20 minutes
Turn the idea into a decision
- Choose a product you know and write the specific decision that dataset and corpus preparation should support.
- List two pieces of evidence, two assumptions, and one credible alternative.
- Make a recommendation in three sentences and add one condition that would change it.
Save to your portfolio
A text-analysis findings note — section: Dataset and corpus preparation
Knowledge check
Answer before opening
What is the decision at the centre of dataset and corpus preparation?
A good answer names an accountable choice, not merely an activity or output.
How should evidence and assumptions be separated?
Label observed facts, interpretations, and untested beliefs explicitly so the next learning step is visible.
What makes the recommendation revisable?
It includes a trigger, threshold, or new evidence that would justify changing course.
What should the portfolio artefact communicate?
The context, considered alternatives, chosen direction, rationale, evidence, and remaining risk.
Spaced review
Reconnect the learning
Reflection