# Can we use Naive Bayes for text classification?

## Can we use Naive Bayes for text classification?

Naive Bayes is a learning algorithm commonly applied to text classification. Some of the applications of the Naive Bayes classifier are: (Automatic) Classification of emails in folders, so incoming email messages go into folders such as: “Family”, “Friends”, “Updates”, “Promotions”, etc.

### Which Naive Bayes is best for text classification?

Document classification is one such example of a text classification problem which can be solved by using both Multinomial and Bernoulli Naive Bayes. The calculation of probabilities is the major reason for this algorithm to be a text classification friendly algorithm and a top favorite among the masses.

#### How do you classify text using Bayes Theorem?

2. The Naive Bayes algorithm

1. Naive Bayes classifiers are a collection of classification algorithms based on Bayes’ Theorem.
2. The dataset is divided into two parts, namely, feature matrix and the response/target vector.
3. Naive Bayes assumes that each feature/variable of the same class makes an:
4. contribution to the outcome.

Can I use Naive Bayes for classification?

Naive Bayes uses a similar method to predict the probability of different class based on various attributes. This algorithm is mostly used in text classification and with problems having multiple classes.

What is the best algorithm for text classification?

Linear Support Vector Machine is widely regarded as one of the best text classification algorithms. We achieve a higher accuracy score of 79% which is 5% improvement over Naive Bayes.

## In which cases Naive Bayes is useful in classification Why?

The Naive Bayes is a classification algorithm that is suitable for binary and multiclass classification. Naïve Bayes performs well in cases of categorical input variables compared to numerical variables. It is useful for making predictions and forecasting data based on historical results.

### What is text categorization in NLP?

Text classification also known as text tagging or text categorization is the process of categorizing text into organized groups. By using Natural Language Processing (NLP), text classifiers can automatically analyze text and then assign a set of pre-defined tags or categories based on its content.

#### Is Naive Bayes supervised or unsupervised?

Naive Bayes classification is a form of supervised learning. It is considered to be supervised since naive Bayes classifiers are trained using labeled data, ie. This contrasts with unsupervised learning, where there is no pre-labeled data available.

Is naive Bayes classification or regression?

Naïve Bayes is a classification method based on Bayes’ theorem that derives the probability of the given feature vector being associated with a label. Logistic regression is a linear classification method that learns the probability of a sample belonging to a certain class.

What is naive Bayes classifier algorithm?

Naive Bayes classifiers are a collection of classification algorithms based on Bayes’ Theorem. It is not a single algorithm but a family of algorithms where all of them share a common principle, i.e. every pair of features being classified is independent of each other. To start with, let us consider a dataset.

## What is Bert good for?

BERT is designed to help computers understand the meaning of ambiguous language in text by using surrounding text to establish context. The BERT framework was pre-trained using text from Wikipedia and can be fine-tuned with question and answer datasets.

### Why is naïve Bayesian classification called naïve briefly outline the major ideas of naïve Bayesian classification?

The Naïve Bayes algorithm is comprised of two words Naïve and Bayes, Which can be described as: Naïve: It is called Naïve because it assumes that the occurrence of a certain feature is independent of the occurrence of other features.

#### When to use naive Bayes?

How to improve naive Bayes?

3.1. Remove Correlated Features.

• 3.2. Use Log Probabilities.
• 3.3. Eliminate the Zero Observations Problem.
• 3.4. Handle Continuous Variables.
• 3.5. Handle Text Data.
• 3.6. Re-Train the Model.
• 3.7. Parallelize Probability Calculations.
• 3.8. Usage with Small Datasets.
• 3.9. Ensemble Methods.
• 3.10. Usage as a Generative Model.
• What is naive Bayes classification?

1.9.1. Gaussian Naive Bayes ¶. GaussianNB implements the Gaussian Naive Bayes algorithm for classification.

• 1.9.2. Multinomial Naive Bayes ¶.
• 1.9.3. Complement Naive Bayes ¶.
• 1.9.4. Bernoulli Naive Bayes ¶.
• 1.9.5. Categorical Naive Bayes ¶.
• 1.9.6. Out-of-core naive Bayes model fitting ¶.
• ## How is naive Bayes algorithm works?

Try transforming the variables using transformations like BoxCox or YeoJohnson to make the features near Normal.

• Try applying Laplace correction to handle records with zeros values in X variables.
• Check for correlated features and try removing the highly correlated ones.
• Feature engineering.