Use Laravel's Elasticsearch-based package (https://github.com/elasticquent/Elasticquent#indexes-and-mapping),

question:

1. When the following configuration uses ik word segmentation, how should it be set?
2. What are the concepts and functions of analysis, filter, and analyzer in the following code?

protected $indexSettings = [ 'analysis' => [ 'char_filter' => [ 'replace' => [ 'type' => 'mapping', 'mappings' => [ '&=> and ' ], ], ], 'filter' => [ 'word_delimiter' => [ 'type' => 'word_delimiter', 'split_on_numerics' => false, 'split_on_case_change' => true, 'generate_word_parts' => true, 'generate_number_parts' => true, 'catenate_all' => true, 'preserve_original' => true, 'catenate_numbers' => true, ] ], 'analyzer' => [ 'default' => [ 'type' => 'custom', 'char_filter' => [ 'html_strip', 'replace', ], 'tokenizer' => 'whitespace', 'filter' => [ 'lowercase', 'word_delimiter', ], ], ], ], ];