Madanswer Technologies Interview Questions Data|Agile|DevOPs|Python - Recent questions in Unstructured Data Classification

Which statistical technique deals with finding a structure in a collection of unlabeled data?

Fri, 31 Dec 2021 03:15:03 +0000

Which statistical technique deals with finding a structure in a collection of unlabeled data?

a) Time Series Analysis

b) Clustering

c) Classification

d) Association Rules Mining

Which pre processing technique is used to remove the most commonly used words?

Fri, 31 Dec 2021 03:14:25 +0000

Which pre processing technique is used to remove the most commonly used words?

Select the correct answer from below given options:

a) Lemmatization

b) Tokenization

c) Stopword removal

Which of the given hyperparameters, when increased, may cause the random forest to overfit the data?

Fri, 31 Dec 2021 03:13:44 +0000

Which of the given hyperparameters, when increased, may cause the random forest to overfit the data?

Select the correct answer from below given options:

a) Depth of Tree

b) Learning Rate

c) Number of Trees

What kind of classification is our case study "Spam Detection"?

Fri, 31 Dec 2021 03:13:09 +0000

What kind of classification is our case study "Spam Detection"?

Select the correct answer from below given options:

a) Multi class

b) Binary

c) Multi label

True Positive is when the predicted instance and the actual instance are not negative.

Fri, 31 Dec 2021 03:12:38 +0000

True Positive is when the predicted instance and the actual instance are not negative.

Select the correct answer from below given options:

a) True

b) False

The higher value of which of the following hyperparameters is better for the decision tree algorithm?

Fri, 31 Dec 2021 03:11:33 +0000

The higher value of which of the following hyperparameters is better for the decision tree algorithm?

Select the correct answer from below given options:

a) Cannot say

b) Samples for leaf

c) Depth of tree

d) Number of samples used for split

Choose the correct sequence from the following in unstructured data classification.

Fri, 31 Dec 2021 03:09:49 +0000

Choose the correct sequence from the following in unstructured data classification.

Select the correct answer from below given options:

a) Data Analysis -> Pre-Processing -> Predict -> Train

b) Pre-Processing -> Model Building -> Predict

c) Data Analysis -> Pre-Processing -> Model Building -> Predict

d) Pre-Processing -> Predict -> Train

The most widely used package for machine learning in Python is _________

Fri, 31 Dec 2021 03:09:10 +0000

The most widely used package for machine learning in Python is _________

Select the correct answer from below given options:

a) jango

b) pillow

c) bottle

d) sklearn

What is the purpose of lemmatization?

Fri, 31 Dec 2021 03:08:08 +0000

What is the purpose of lemmatization?

Select the correct answer from below given options:

a) To convert a sentence into words

b) To convert words into a proper base form

c) To remove redundant words

d) To split into sentences

Clustering is supervised classification.

Fri, 31 Dec 2021 03:07:28 +0000

Clustering is supervised classification.

Select the correct answer from below given options:

a) True

b) False

SVM is a _____________

Fri, 31 Dec 2021 03:06:43 +0000

SVM is a _____________

Select the correct answer from below given options:

a) Supervised learning algorithm

b) Semi-supervised learning algorithm

c) Unsupervised learning algorithm

d) Weakly supervised learning algorithm

Email spam data is an example of __________

Fri, 31 Dec 2021 03:06:12 +0000

Email spam data is an example of __________

Select the correct answer from below given options:

a) Unstructured data

b) Structured data

In document classification, each document has to be converted from full text to a document vector.

Fri, 31 Dec 2021 03:05:40 +0000

In document classification, each document has to be converted from full text to a document vector.

Select the correct answer from below given options:

a) True

b) False

Which numerical statistics is used to identify the importance of a rare word in a document?

Fri, 31 Dec 2021 03:05:05 +0000

Which numerical statistics is used to identify the importance of a rare word in a document?

Select the correct answer from below given options:

a) None of the options

b) TF-IDF

c) DF

d) TF

Choose the correct sequence for classifier building from the following.

Fri, 31 Dec 2021 03:02:56 +0000

Choose the correct sequence for classifier building from the following.

Select the correct answer from below given options:

a) None of the options

b) Initialize -> Evaluate -> Train -> Predict

c) Initialize -> Train -> Predict -> Evaluate

d) Train -> Test -> Initialize -> Predict

Select the correct statement about Nonlinear classification.

Fri, 31 Dec 2021 03:01:49 +0000

Select the correct statement about Nonlinear classification.

Select the correct answer from below given options:

a) The concept of slack variables is used in SVM for Nonlinear classification

b) Kernel trick is used in SVM for non-linear classification

c) Kernel tricks are used by Nonlinear classifiers to achieve maximum-margin hyperplanes

A technique used to depict the performance in a tabular form that has 2 dimensions namely actual and predicted sets of data is ___________

Fri, 31 Dec 2021 03:01:04 +0000

A technique used to depict the performance in a tabular form that has 2 dimensions namely actual and predicted sets of data is ___________

Select the correct answer from below given options:

a) Confusion Matrix

b) Classification Accuracy

c) Cross Validation

d) Classification Report

Can we consider sentiment classification as a text classification problem

Fri, 31 Dec 2021 03:00:19 +0000

Can we consider sentiment classification as a text classification problem

Select the correct answer from below given options:

a) Yes

b) No

Pruning is a technique associated with __________

Fri, 31 Dec 2021 02:59:36 +0000

Pruning is a technique associated with __________

Select the correct answer from below given options:

a) SVM

b) Decision tree

c) Logistic regression

d) Linear regression

High classification accuracy always indicates a good classifier.

Fri, 31 Dec 2021 02:58:26 +0000

High classification accuracy always indicates a good classifier.

Select the correct answer from below given options:

a) False

b) True

The classification where each data is mapped to more than one class is called ___________

Fri, 31 Dec 2021 02:57:52 +0000

The classification where each data is mapped to more than one class is called ___________

Select the correct answer from below given options:

a) Multi Class Classification

b) Binary Classification

c) Multi Label Classification

Which NLP technique uses a lexical knowledge base to obtain the correct base form of the words?

Fri, 31 Dec 2021 02:56:48 +0000

Which NLP technique uses a lexical knowledge base to obtain the correct base form of the words?

Select the correct answer from below given options:

a) lemmatization

b) tokenization

c) object standardization

d) stop word removal

Identify the stop word(s) from the following.

Fri, 31 Dec 2021 02:55:59 +0000

Identify the stop word(s) from the following.

Select the correct answer from below given options:

a) Both "the" and "it"

b) "the"

c) "fragment"

d) "it"

e) "computer"

Inverse Document frequency is used in the term document matrix.

Fri, 31 Dec 2021 02:54:13 +0000

Inverse Document frequency is used in the term document matrix.

Select the correct answer from below given options:

a) True

b) False

An algorithm that counts how many times a word appears in a document is __________

Fri, 31 Dec 2021 02:53:27 +0000

An algorithm that counts how many times a word appears in a document is __________

Select the correct answer from below given options:

a) Bag-of-Words (BOW)

b) TF-IDF

c) TDM

d) DTM

TF and IDF use matrix representations.

Fri, 31 Dec 2021 02:52:47 +0000

TF and IDF use matrix representations.

Select the correct answer from below given options:

a) False

b) True

The following are pre processing methods used for unstructured data classification, except _________

Fri, 31 Dec 2021 02:52:06 +0000

The following are pre processing methods used for unstructured data classification, except _________

Select the correct answer from below given options:

a) Confusion_matrix

b) Stop word removal

c) Stemming

d) Lemmatization

A classifier that can compute using numeric as well as categorical values is __________

Fri, 31 Dec 2021 02:51:12 +0000

A classifier that can compute using numeric as well as categorical values is __________

Select the correct answer from below given options:

a) Naive Bayes Classifier

b) Decision Tree Classifier

c) SVM Classifier

d) Random Forest Classifier