一种矩阵具有相对较少的非零（或“有趣的” ）的项目。 It may be represented in much less than n × m space.它...

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一种矩阵具有相对较少的非零（或“有趣的” ）的项目。 It may be represented in much less than n × m space.它可派代表参加远远低于ñ ×米的空间。 -A matrix that has relatively few non-zero (or "interesting") entries. It may be represented in much less than n × m space.