Word
classifier
Phoneticsclas·si·fi·er
UK/klˈæsɪfˌaɪə/
Countable noun
Definition
n. a computer program that puts things into groups, like spam and normal email. You train it with examples so it learns to sort new things on its own.
n. a computational model or algorithm that assigns input data to predefined categories or labels. Typically trained on labelled examples to predict the category of new, unseen inputs.
Examples
“The email classifier moves spam to a separate folder.”
“The bank uses a classifier to flag unusual transactions for further review.”
“Trained on thousands of labelled images, the classifier distinguishes benign moles from early melanomas with accuracy that rivals junior dermatologists.”
Examples
simple
“The email classifier moves spam to a separate folder.”
contextual
“The bank uses a classifier to flag unusual transactions for further review.”
complex
“Trained on thousands of labelled images, the classifier distinguishes benign moles from early melanomas with accuracy that rivals junior dermatologists.”
Collocations
Common phrases and expressions where native English speakers use the word “classifier” in context.
Verb
01. classifier distinguishes
“This classifier distinguishes between benign and malignant tumors.”
noun + verb
02. classifier misclassifies
“The classifier misclassifies blurry images more often than clear ones.”
noun + verb
03. classifier predicts
“The classifier predicts whether a new email is spam or not.”
noun + verb
04. deploy classifier
“Once tested, the bank will deploy the classifier to detect fraud.”
verb + noun
05. evaluate classifier
“You should evaluate the classifier on unseen data to check its accuracy.”
verb + noun
Adjective
06. binary classifier
“We trained a binary classifier to distinguish spam from legitimate email.”
adj + noun
07. linear classifier
“A linear classifier separates the two groups with a straight boundary line.”
adj + noun
08. multiclass classifier
“They built a multiclass classifier to sort images into ten different categories.”
adj + noun
Noun
09. accuracy of classifier
“The accuracy of the classifier improved after we cleaned the data.”
noun + prep + noun
10. build a spam classifier
“The students built a spam classifier as their final course project.”
11. deploy the classifier in production
“After testing, they deployed the classifier in production to screen transactions.”
12. evaluate the classifier's performance
“We evaluated the classifier's performance using cross-validation.”
Etymology
From classify + -er.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Synonyms
Word family
VERB
NOUN
Related words
Domains
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
- Frequency
- Occasional
- Level
- C1 · Advanced
- Updated
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