Podcast
Questions and Answers
Which method is used to represent text data by a vector of word frequency?
Which method is used to represent text data by a vector of word frequency?
- Method 3: By a vector of word frequency (correct)
- Method 4: By a vector of letter frequency
- Method 1: By a list of words
- Method 2: By the set of words
What are considered irrelevant features for text data according to the text?
What are considered irrelevant features for text data according to the text?
- Words that are easy to pronounce
- Words that appear frequently (correct)
- Words that carry emotional weight
- Words that appear rarely
In data mining, what does 'feature pruning' refer to?
In data mining, what does 'feature pruning' refer to?
- Doubling the number of existing features
- Removing irrelevant features from the dataset (correct)
- Adding more features to the dataset
- Selecting only the most complex features
How can categorical data be represented according to the text?
How can categorical data be represented according to the text?
What characterizes irrelevant features for numerical data?
What characterizes irrelevant features for numerical data?
Can an algorithm handle redundant features effectively?
Can an algorithm handle redundant features effectively?
What is the purpose of feature extraction in data mining?
What is the purpose of feature extraction in data mining?
Which phase of Data Mining involves cleaning missing and erroneous parts of the data?
Which phase of Data Mining involves cleaning missing and erroneous parts of the data?
What does Feature selection and transformation in Data Mining primarily aim to do?
What does Feature selection and transformation in Data Mining primarily aim to do?
In the context of Data Mining, what is the role of feature engineering?
In the context of Data Mining, what is the role of feature engineering?
What should one focus on to achieve the Learning Objectives in Data Mining Process?
What should one focus on to achieve the Learning Objectives in Data Mining Process?
Which phase of Data Mining involves designing and applying analytical methods to preprocessed data?
Which phase of Data Mining involves designing and applying analytical methods to preprocessed data?
What is the primary purpose of feature engineering in data mining?
What is the primary purpose of feature engineering in data mining?
In the context of data mining, what do objects refer to?
In the context of data mining, what do objects refer to?
What is a feature in data mining?
What is a feature in data mining?
Which phase of the data mining process involves converting raw data into a format suitable for algorithms?
Which phase of the data mining process involves converting raw data into a format suitable for algorithms?
What is one of the key challenges in feature selection and transformation in data mining?
What is one of the key challenges in feature selection and transformation in data mining?
How does good feature engineering contribute to predictive modeling in data mining?
How does good feature engineering contribute to predictive modeling in data mining?
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