Dictionaries: Be familiar with the concept of a dictionary. A collection of key-value pairs in which the value is accessed via the associated key. Be familiar with simple applications of dictionaries, for example information retrieval, and have experience of using a dictionary data structure in a programming language. Information retrieval: For example, the document 'The green, green grass grows' would be represented by the dictionary: {‘grass’: 1, ‘green’: 2, ‘grows’: 1, ‘the’: 1} ignoring letter case. 50

Quick explanation

Dictionaries: Be familiar with the concept of a dictionary. A collection of key-value pairs in which the value is accessed via the associated key. Be familiar with simple applications of dictionaries, for example information retrieval, and have experience of using a dictionary data structure in a programming language. Information retrieval: For example, the document 'The green, green grass grows' would be represented by the dictionary: {‘grass’: 1, ‘green’: 2, ‘grows’: 1, ‘the’: 1} ignoring letter case. 50

• This point belongs to Dictionaries, especially Dictionaries.
• You need to be able to dictionaries: Be familiar with the concept of a dictionary. A collection of key-value pairs in which the value is accessed via the associated key. Be familiar with simple applications of dictionaries, for example information retrieval, and have experience of using a dictionary data structure in a programming language. Information retrieval: For example, the document 'The green, green grass grows' would be represented by the dictionary: {‘grass’: 1, ‘green’: 2, ‘grows’: 1, ‘the’: 1} ignoring letter case. 50.
• Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.