Data Mining (OCR A-Level Computer Science): Flashcards
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12 cards from this deck
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Practise the cards
12 cards from this deck
Data mining definition
Data mining definition
Process of analysing large datasets to extract patterns, trends & insights
Purpose of data mining
Purpose of data mining
Turn raw data into actionable insights
Classification technique
Classification technique
Assigns data into predefined categories
Clustering technique
Clustering technique
Groups similar data points together
Association rule mining
Association rule mining
Identifies relationships between variables
Anomaly detection
Anomaly detection
Identifies unusual data points differing from the norm
Data preprocessing purpose
Data preprocessing purpose
Cleans & transforms data for accuracy & consistency
K-Means algorithm use
K-Means algorithm use
Used for clustering data
Market basket analysis purpose
Market basket analysis purpose
Discover products frequently bought together
Fraud detection in finance
Fraud detection in finance
Detect unusual patterns indicating fraudulent activities
Impact of poor-quality data
Impact of poor-quality data
Leads to inaccurate or misleading results
Overfitting models issue
Overfitting models issue
Models perform well on training but poorly on new data