稀疏索引只包含文档的索引字段的条目。

Sparse indexes only contain entries for documents that have the indexed field.

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作为一个解决方案，你应该看一看稀疏索引。

As a workaround, you should take a look at sparse indexes.

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基于提升方法构造的整数小波变换，采用行索引稀疏存储方案，可以对海量影像数据进行高保真的压缩。

The method of sparsely row-indexed storage has been used to compress large volumes of image data, on the base of integer wavelet transform constructed by lift scheme.

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稀疏的关联数组(字符串索引)可能在元素之间有间隔。

A sparse associative array (indexed by string) might have gaps between elements.

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稀疏的关联数组(字符串索引)可能在元素之间有间隔。

A sparse associative array (indexed by string) might have gaps between elements.

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