AUTO_LEXERのindex_stems属性の値は、TRUEかFALSEです。AUTO_LEXERのindex_stems属性は、次の言語をサポートしています。
index_stems
ARABIC
NYNORSK
BOKMAL
PERSIAN
CROATION
SERBIAN
DANISH
SLOVAK
FINNISH
SLOVENIAN
HEBREW
THAI
CATALAN
KOREAN
CZECH
POLISH
DUTCH
PORTUGUESE
ENGLISH
ROMANIAN
FRENCH
RUSSIAN
GERMAN
SIMPLIFIED CHINEESE
GREEK
SPANISH
HUNGARIAN
SWEDISH
ITALIAN
TRADITIONAL CHINEESE
JAPANESE
TURKISH
