为简化几何操作数据并行实现的复杂度,特别是简化几何操作中重采样数据并行实现的复杂度,提出了通过SIMD(S ingle Instruction Mu ltip le Data)处理元阵列内的数据并行传送,而不是通常所采用的处理元阵列与阵列存储器之间的数据流传送...为简化几何操作数据并行实现的复杂度,特别是简化几何操作中重采样数据并行实现的复杂度,提出了通过SIMD(S ingle Instruction Mu ltip le Data)处理元阵列内的数据并行传送,而不是通常所采用的处理元阵列与阵列存储器之间的数据流传送实现几何操作的处理方法。讨论了几何操作正向映射的零阶内插与一阶内插的数据并行实现方法;几何操作反向映射的零阶内插与一阶内插的数据并行实现方法;以及正向映射与反向映射的3种特殊情况。结果表明,该方法使几何操作的数据并行实现方法的复杂性为Ο(M+N),而不是数据流传送实现方法的Ο(MN),从而更好地满足了数字图像快速实时处理的需要。展开更多
The idea of positional inverted index is exploited for indexing of graph database. The main idea is the use of hashing tables in order to prune a considerable portion of graph database that cannot contain the answer s...The idea of positional inverted index is exploited for indexing of graph database. The main idea is the use of hashing tables in order to prune a considerable portion of graph database that cannot contain the answer set. These tables are implemented using column-based techniques and are used to store graphs of database, frequent sub-graphs and the neighborhood of nodes. In order to exact checking of remaining graphs, the vertex invariant is used for isomorphism test which can be parallel implemented. The results of evaluation indicate that proposed method outperforms existing methods.展开更多
文摘为简化几何操作数据并行实现的复杂度,特别是简化几何操作中重采样数据并行实现的复杂度,提出了通过SIMD(S ingle Instruction Mu ltip le Data)处理元阵列内的数据并行传送,而不是通常所采用的处理元阵列与阵列存储器之间的数据流传送实现几何操作的处理方法。讨论了几何操作正向映射的零阶内插与一阶内插的数据并行实现方法;几何操作反向映射的零阶内插与一阶内插的数据并行实现方法;以及正向映射与反向映射的3种特殊情况。结果表明,该方法使几何操作的数据并行实现方法的复杂性为Ο(M+N),而不是数据流传送实现方法的Ο(MN),从而更好地满足了数字图像快速实时处理的需要。
文摘The idea of positional inverted index is exploited for indexing of graph database. The main idea is the use of hashing tables in order to prune a considerable portion of graph database that cannot contain the answer set. These tables are implemented using column-based techniques and are used to store graphs of database, frequent sub-graphs and the neighborhood of nodes. In order to exact checking of remaining graphs, the vertex invariant is used for isomorphism test which can be parallel implemented. The results of evaluation indicate that proposed method outperforms existing methods.
