classifier
gb/klˈæsɪfˌaɪɚ/ us/klˈæsɪfˌaɪɚ/
C1
Inglês
Acepções
0 acepção
Substantivo
technical
C1
entity
1
model that assigns categories
A computer model that decides which group something belongs to.
Padrão de uso:
[type] classifier; classifier for [task]; train/build/evaluate a classifier
Erro comum:
Do not use classifier for a model that predicts a number; that is usually called a regressor.
Sinônimos
classification model (Standard technical synonym in machine learning.)
|
categorizer (Less formal; emphasizes putting items into categories.)
Antônimos
regressor (A model that predicts continuous numerical values rather than categories.)
Colocações
binary classifier
|multiclass classifier
|train a classifier
|build a classifier
|evaluate a classifier
|classifier accuracy
|classifier output
|supervised classifier
|probabilistic classifier
|neural classifier
Temas
technology
|data_science
|ai
|statistics
Exemplos
- The email filter uses a classifier to label messages as spam or not spam.
- We trained a classifier to distinguish images of cats from images of dogs.
- A good classifier needs representative training data and clear category labels.
Exemplos para estudantes
- The classifier puts each photo into a group.
- This classifier can find spam emails.
Substantivo
C1
entity
2
person or thing that sorts
Someone or something that sorts things into groups.
Padrão de uso:
classifier of [things]; classifier for [things]
Erro comum:
Classifier names the person or tool; classification is the process or system.
Sinônimos
sorter (More everyday; often used for physical objects or simple grouping.)
|
categorizer (Close in meaning; emphasizes assigning categories.)
Colocações
automatic classifier
|human classifier
|document classifier
|image classifier
|text classifier
|topic classifier
|data classifier
|content classifier
Temas
organization
|information
|work
Exemplos
- Each volunteer acted as a classifier, assigning the survey answers to broad topics.
- The archive uses a simple classifier to group documents by subject and date.
- A trained classifier checked whether each sample belonged in the high-risk group.
Exemplos para estudantes
- The classifier sorts the cards by color.
- She worked as a classifier for the research project.
Substantivo
technical
C1
entity
3
grammar word for counting nouns
A grammar word used with nouns in some languages when you count or point to things.
Padrão de uso:
classifier + noun; number + classifier + noun
Erro comum:
Do not confuse a classifier with an adjective; it is a grammatical marker, not usually a descriptive word.
Sinônimos
measure word (Common learner term, especially for Chinese; sometimes narrower than classifier.)
|
numeral classifier (More specific term for a classifier used with numbers.)
Colocações
noun classifier
|numeral classifier
|classifier language
|classifier system
|classifier marker
|use a classifier
|Mandarin classifier
|Japanese classifier
|measure classifier
|classifier phrase
Temas
linguistics
|grammar
|languages
Exemplos
- In Mandarin, the classifier běn is used with many words for books and bound items.
- Many classifier languages require a classifier in phrases like "three books" or "that animal."
- The teacher explained that the choice of classifier can depend on the shape or type of the noun.
Exemplos para estudantes
- Chinese uses classifiers when people count many nouns.
- The classifier comes between the number and the noun.
Substantivo
technical
C2
entity
4
sign-language class handshape
In a sign language, a handshape that can stand for a type of thing and show where it is or how it moves.
Padrão de uso:
ASL classifier; classifier for [object/person/vehicle]
Erro comum:
Not every handshape in a sign language is a classifier; the term refers to a particular grammatical use.
Sinônimos
depicting sign (Often used in newer sign-linguistics terminology; not identical in every teaching tradition.)
|
classifier handshape (Emphasizes the handshape used as the classifier.)
Colocações
ASL classifier
|classifier handshape
|classifier construction
|classifier predicate
|use classifiers
|spatial classifier
|handling classifier
|entity classifier
Temas
sign_language
|linguistics
|grammar
|communication
Exemplos
- In ASL, a classifier can show a car moving down a road or a person standing in a room.
- The students practiced using classifiers to describe the layout of furniture.
- Some teachers now prefer the term depicting construction for what older ASL materials call a classifier.
Exemplos para estudantes
- The classifier shows a car moving.
- We learned classifiers in ASL class.
Substantivo
technical
C2
entity
5
machine separating materials
A machine that separates material into different groups, such as large and small pieces.
Padrão de uso:
[material] classifier; classifier for [particles/materials]
Erro comum:
In everyday English, separator is usually more understandable than this technical use of classifier.
Sinônimos
separator (Broader and more common; may separate things by many methods.)
|
sizer (Used when the main purpose is sorting by size.)
Colocações
air classifier
|powder classifier
|particle classifier
|spiral classifier
|hydraulic classifier
|classifier mill
|classifier wheel
|mineral classifier
Temas
engineering
|manufacturing
|mining
|materials
Exemplos
- The plant uses a classifier to separate fine powder from larger particles.
- Oversized material is returned to the mill after it leaves the classifier.
- An air classifier sorts particles by using a controlled stream of air.
Exemplos para estudantes
- The classifier separates the powder.
- Small particles leave the classifier first.
Gramática
Forma no dicionário
classifier
AFI
GB/klˈæsɪfˌaɪɚ/
US/klˈæsɪfˌaɪɚ/
Sílabas e tonicidade
clas - si - fi - er (4 sílabas)
Stress on 1st syllable (clas)
Formas da palavra
Noun
- Base: classifier
- Plural: classifiers
Expressões
binary classifier
1/bˈaɪnɚi klˈæsɪfˌaɪɚ/
fixed phrase
technical
two-category classification model
A model that chooses between two groups.
Exemplos
- The team built a binary classifier to identify transactions as fraudulent or legitimate.
- A spam filter is often treated as a binary classifier: spam or not spam.
- The binary classifier performed well on positive cases but missed many negative ones.
classifier construction
1/klˈæsɪfˌaɪɚ kənstɹˈʌkʃən/
fixed phrase
technical
sign-language depicting structure
A sign-language structure that uses a classifier handshape to show what something is like or how it moves.
Exemplos
- The ASL lesson focused on classifier constructions for vehicles moving through space.
- A classifier construction can show where a cup is placed on a table.
- Students used classifier constructions to describe the shape and movement of animals.
decision-tree classifier
1/dɪsˈɪʒən tɹˈi klˈæsɪfˌaɪɚ/
fixed phrase
technical
tree-based classification model
A model that asks a series of questions to choose a group.
Exemplos
- A decision-tree classifier is easy to explain because each branch shows a rule.
- The decision-tree classifier first checked the user's age and then the purchase amount.
- They compared a decision-tree classifier with a logistic regression model.
k-nearest-neighbor classifier
1/kˈeɪ nˈɪɹɪst nˈeɪbɚ klˈæsɪfˌaɪɚ/
fixed phrase
technical
neighbor-based classification model
A model that looks at the most similar examples and chooses the most common group.
Exemplos
- A k-nearest-neighbor classifier labels a point by looking at nearby labeled points.
- The k-nearest-neighbor classifier became slow as the training set grew.
- Changing k from 3 to 7 improved the classifier's accuracy.
multiclass classifier
1/mˈʌltɪkləs klˈæsɪfˌaɪɚ/
fixed phrase
technical
many-category classification model
A model that chooses one group from three or more groups.
Exemplos
- The app uses a multiclass classifier to identify bird species from photos.
- A multiclass classifier must choose among categories such as politics, sports, business, and entertainment.
- They converted the problem from binary classification to a multiclass classifier with five labels.
naive bayes classifier
1/nˌaɪˈiv bˈeɪz klˈæsɪfˌaɪɚ/
fixed phrase
technical
Bayesian probabilistic classifier
A simple probability-based model often used for text classification.
Exemplos
- A Naive Bayes classifier can work surprisingly well for spam detection.
- The course used a Naive Bayes classifier as an introduction to probabilistic models.
- The Naive Bayes classifier estimated the most likely topic for each document.
random forest classifier
1/ɹˈændəm fˈɔɹɪst klˈæsɪfˌaɪɚ/
fixed phrase
technical
many-tree classification model
A model that uses many decision trees and combines their answers.
Exemplos
- The random forest classifier gave more stable results than a single decision tree.
- They used a random forest classifier to predict whether a customer would cancel a subscription.
- Feature importance scores from the random forest classifier helped the team understand the model.
support vector machine classifier
1/səpˈɔɹt vˈɛktɚ məʃˈin klˈæsɪfˌaɪɚ/
fixed phrase
technical
margin-based classification model
A model that tries to draw the best boundary between groups.
Exemplos
- The support vector machine classifier handled the small dataset better than the neural network.
- They trained a support vector machine classifier to separate positive and negative reviews.
- A linear support vector machine classifier can be effective when the classes are nearly separable.