自动抽词标引除编制题内关键词索引外，至今没有突破性进展，主要是检准率太低。
Except for keyword - in - context index, there is no breakthrough made in automatic derived indexing today due to low precision ratio of retrieval.
自动抽词标引除编制题内关键词索引外，至今没有突破性进展，主要是检准率太低。
Except for keyword - in - context index, there is no breakthrough made in automatic derived indexing today due to low precision ratio of retrieval.
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