reduce
To make something smaller or simpler. People say this when they want less of something, like reducing stress, reducing clutter, or reducing costs.
What a model may hear
- array reduction functional programming (JavaScript, Python, etc.)
- fold a list into a single value by applying a function cumulatively to each element
- MapReduce operation distributed computing (Hadoop, Spark)
- aggregate data across many machines after mapping, often summing or grouping results
- dimensionality reduction machine learning and statistics
- compress features or variables while preserving structure, as in PCA or t-SNE
- reduction in formal logic mathematics and type theory
- simplify an expression to a normal form through rewrite rules
Where people and models part ways
“Reduce this for me”
Meant: Make this shorter or simpler to read
May be taken as: Apply a mathematical reduction or data aggregation that changes the content unexpectedly
Say instead: “Summarize this and make it shorter”
“Can you reduce the noise?”
Meant: Remove distracting parts from audio or text
May be taken as: Apply a signal processing filter or statistical noise reduction that alters the source
Say instead: “Remove the distracting background sounds from this audio”
“Reduce the list to what matters”
Meant: Pick the important items
May be taken as: Run a fold operation that combines items mathematically rather than selecting
Say instead: “Pick the most important items from this list”
“I need to reduce my data”
Meant: Make the dataset smaller to work with
May be taken as: Apply PCA or feature selection automatically, changing what the data represents
Say instead: “Make this dataset smaller by removing duplicate rows”
Tips
- Say 'summarize' instead of 'reduce' when you mean make text shorter
- Say 'combine these into one number' if you want a sum or total
- Say 'pick the top items' if you want selection, not aggregation
- Specify 'remove noise from audio' rather than 'reduce noise' for sound editing
- Use 'compress the features' only if you want a machine learning transformation
Often confused with
- summarize
- produces a shorter version, not a single computed value
- compress
- preserves all information for later recovery
- filter
- removes some items, keeps others unchanged
- aggregate
- combines many into one, often by summing or averaging
- simplify
- makes easier to understand, not necessarily shorter
- fold
- the functional programming synonym for reduce