Phrase suggestions (did you mean) in Elasticsearch - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of phrase suggestions in Elasticsearch?

Phrase suggestions help users find the correct spelling or phrase when their search query contains typos or errors by offering alternative suggestions.

beginner

Which Elasticsearch feature provides 'did you mean' style suggestions?

The phrase_suggester provides 'did you mean' style phrase suggestions to correct user queries.

intermediate

What is the difference between term_suggester and phrase_suggester in Elasticsearch?

term_suggester suggests corrections for individual words, while phrase_suggester suggests corrections for entire phrases considering word context.

intermediate

How does Elasticsearch's phrase suggester improve suggestion quality?

It uses a language model and n-gram statistics from an index to suggest more contextually accurate phrase corrections.

intermediate

What key parameters can you set in an Elasticsearch phrase suggester?

You can set field to specify the text field, size for number of suggestions, gram_size for n-gram length, and direct_generator for candidate generation.

Which Elasticsearch suggester is best for correcting entire phrases?

A completion_suggester

B term_suggester

C phrase_suggester

D regex_suggester

The phrase_suggester is designed to correct whole phrases considering word context.

What does the gram_size parameter control in phrase suggestions?

A Length of n-grams used for phrase modeling

B Number of suggestions returned

C Field to search for suggestions

D Maximum edit distance for corrections

gram_size sets the n-gram length used to build the language model for phrase suggestions.

Which of these is NOT a typical use of phrase suggestions?

A Correcting typos in user queries

B Improving search relevance

C Suggesting alternative phrases

D Providing autocomplete options

Autocomplete is handled by the completion suggester, not phrase suggestions.

What role does the direct_generator play in phrase suggestions?

A Generates candidate corrections for each word

B Filters out stop words

C Ranks the final suggestions

D Indexes the phrase data

direct_generator creates candidate corrections for each word in the phrase.

Which Elasticsearch API section do you use to add phrase suggestions to a search?

A aggs

B suggest

C query

D highlight

Phrase suggestions are added under the suggest section of the search request.

Explain how Elasticsearch phrase suggestions help users with misspelled search queries.

Think about how the system guesses what the user meant to type.

Describe the main parameters you configure when using the phrase suggester in Elasticsearch.

Consider what controls the source text, number of suggestions, and how phrases are modeled.