Podcast
Questions and Answers
Terms in the Vector-Space Model are called index terms or vocabulary terms.
Terms in the Vector-Space Model are called index terms or vocabulary terms.
True
Each term in a document is assigned a complex-valued weight, wij.
Each term in a document is assigned a complex-valued weight, wij.
False
In the Term-Document Matrix, zero weight for a term indicates it is highly significant in the document.
In the Term-Document Matrix, zero weight for a term indicates it is highly significant in the document.
False
Term Frequency measures how common a term is across documents.
Term Frequency measures how common a term is across documents.
Signup and view all the answers
Inverse Document Frequency (IDF) increases for terms that are common across many documents.
Inverse Document Frequency (IDF) increases for terms that are common across many documents.
Signup and view all the answers
The more frequent a word is used across documents, the higher its IDF score.
The more frequent a word is used across documents, the higher its IDF score.
Signup and view all the answers
In Boolean Retrieval Model, it is easy to control the number of documents retrieved.
In Boolean Retrieval Model, it is easy to control the number of documents retrieved.
Signup and view all the answers
A bag of words representation allows for multiple occurrences of the same word.
A bag of words representation allows for multiple occurrences of the same word.
Signup and view all the answers
In Statistical Models, documents are typically represented by ordered sequences of words.
In Statistical Models, documents are typically represented by ordered sequences of words.
Signup and view all the answers
In the term-document matrix representation, rows represent terms and columns represent documents.
In the term-document matrix representation, rows represent terms and columns represent documents.
Signup and view all the answers
Similarity between a document and a query in the Vector Space Model is determined based on the length of the document.
Similarity between a document and a query in the Vector Space Model is determined based on the length of the document.
Signup and view all the answers
Determining important words in a document is one of the issues addressed by the Vector Space Model.
Determining important words in a document is one of the issues addressed by the Vector Space Model.
Signup and view all the answers
A retrieval model specifies the details of document representation, query representation, and retrieval function.
A retrieval model specifies the details of document representation, query representation, and retrieval function.
Signup and view all the answers
Statistical models are the only type of retrieval models mentioned in the text.
Statistical models are the only type of retrieval models mentioned in the text.
Signup and view all the answers
In the Boolean Model, a document is represented as a collection of phrases.
In the Boolean Model, a document is represented as a collection of phrases.
Signup and view all the answers
One of the preprocessing steps includes converting tokens to their plural forms for accurate indexing.
One of the preprocessing steps includes converting tokens to their plural forms for accurate indexing.
Signup and view all the answers
Filtering tasks involve varied queries on a continuous document stream.
Filtering tasks involve varied queries on a continuous document stream.
Signup and view all the answers
Ad hoc retrieval tasks involve a fixed document corpus with fixed queries.
Ad hoc retrieval tasks involve a fixed document corpus with fixed queries.
Signup and view all the answers
