EXAM 2026) QUESTIONS AND CORRECT ANSWERS
Data processing - ANSWERuser knows what he/she wants and has a function
to compute it
Querying - ANSWERuser knows what he or she wants and can describe it
Navigation - ANSWERuser knows what he or she wants and use cannot
describe it or locate it
Exploration - ANSWERuser doesn't know what he or she wants. Wants to
acquire new knowledge and reveal new facts
5 Types of Exploration Tools - ANSWER1. Analysis (identify common patterns
or outliers)
2. Comparison (quantify similarities/differences)
3. Aggregation (create groups and clusters)
4. Transformation (use a more convenient representation)
5. Visualization
3Vs - ANSWERVolume, velocity, variety
HMLE - ANSWERHigh dimensional (lots of different things we want to
explore)
, Multi modal (different ways needed to visualize it)
Inter-linked (data is linked, sometimes null, sometimes implicit)
Evolving (underlying patterns change)
INS - ANSWERImprecision
Noise
Sparsity
Cognition - ANSWERThe mental action of efficiently and effectively being able
to process information into thoughts, knowledge, and insights
Visualization - ANSWERGraphically representing data to assist the processing
of information into knowledge, insights, and thoughts.
Uses exploratory data analysis to find trends and patterns in datasets.
Main components of a sequence - ANSWERstarting point, ending point,
length
Data Deluge - ANSWERA vast increase in the amount of data generated by
individuals and businesses.