7.8.17. TokenTrigram¶
7.8.17.1. Summary¶
TokenTrigram is similar to TokenBigram. The differences
between them is token unit.
7.8.17.2. Syntax¶
TokenTrigram hasn’t parameter:
TokenTrigram
7.8.17.3. Usage¶
If normalizer is used, TokenTrigram uses white-space-separate like
tokenize method for ASCII characters. TokenTrigram uses trigram
tokenize method for non-ASCII characters.
If TokenTrigram tokenize non-ASCII charactors, TokenTrigram uses
3 character per token as below example.
Execution example:
tokenize TokenTrigram "日本語の勉強" NormalizerAuto
# [
# [
# 0,
# 1546586185.123834,
# 0.0003123283386230469
# ],
# [
# {
# "value": "日本語",
# "position": 0,
# "force_prefix": false,
# "force_prefix_search": false
# },
# {
# "value": "本語の",
# "position": 1,
# "force_prefix": false,
# "force_prefix_search": false
# },
# {
# "value": "語の勉",
# "position": 2,
# "force_prefix": false,
# "force_prefix_search": false
# },
# {
# "value": "の勉強",
# "position": 3,
# "force_prefix": false,
# "force_prefix_search": false
# },
# {
# "value": "勉強",
# "position": 4,
# "force_prefix": false,
# "force_prefix_search": false
# },
# {
# "value": "強",
# "position": 5,
# "force_prefix": false,
# "force_prefix_search": false
# }
# ]
# ]