The work of the classification of the simple Lie algebras over algebraical closed fieldF of prime characteristc p began nearly 50 years ago and the problem has been solved just recentlyunder the condition p】7,and the...The work of the classification of the simple Lie algebras over algebraical closed fieldF of prime characteristc p began nearly 50 years ago and the problem has been solved just recentlyunder the condition p】7,and the generalized Kostrikin-Safarevic conjecture that these al-gebras are all of classical or Cartan type is verified.For the classification of simple Liealgebras over non-closed fields,it is necessary to consider the forms.A central simple展开更多
How to construct an appropriate spatial consistent measurement is the key to improving image retrieval performance. To address this problem, this paper introduces a novel image retrieval mechanism based on the family ...How to construct an appropriate spatial consistent measurement is the key to improving image retrieval performance. To address this problem, this paper introduces a novel image retrieval mechanism based on the family filtration in object region. First, we supply an object region by selecting a rectangle in a query image such that system returns a ranked list of images that contain the same object, retrieved from the corpus based on 100 images, as a result of the first rank. To further improve retrieval performance, we add an efficient spatial consistency stage, which is named family-based spatial consistency filtration, to re-rank the results returned by the first rank. We elaborate the performance of the retrieval system by some experiments on the dataset selected from the key frames of ＂TREC Video Retrieval Evaluation 2005 （TRECVID2005）＂. The results of experiments show that the retrieval mechanism proposed by us has vast major effect on the retrieval quality. The paper also verifies the stability of the retrieval mechanism by increasing the number of images from 100 to 2000 and realizes generalized retrieval with the object outside the dataset.展开更多
基金Project supported by the National Natural Science Foundation of China.
文摘The work of the classification of the simple Lie algebras over algebraical closed fieldF of prime characteristc p began nearly 50 years ago and the problem has been solved just recentlyunder the condition p】7,and the generalized Kostrikin-Safarevic conjecture that these al-gebras are all of classical or Cartan type is verified.For the classification of simple Liealgebras over non-closed fields,it is necessary to consider the forms.A central simple
基金supported by National High Technology Research and Development Program of China (863 Program)(No.2007AA01Z416)National Natural Science Foundation of China (No.60773056)+1 种基金Beijing New Star Project on Science and Technology (No.2007B071)Natural Science Foundation of Liaoning Province of China (No.20052184)
文摘How to construct an appropriate spatial consistent measurement is the key to improving image retrieval performance. To address this problem, this paper introduces a novel image retrieval mechanism based on the family filtration in object region. First, we supply an object region by selecting a rectangle in a query image such that system returns a ranked list of images that contain the same object, retrieved from the corpus based on 100 images, as a result of the first rank. To further improve retrieval performance, we add an efficient spatial consistency stage, which is named family-based spatial consistency filtration, to re-rank the results returned by the first rank. We elaborate the performance of the retrieval system by some experiments on the dataset selected from the key frames of ＂TREC Video Retrieval Evaluation 2005 （TRECVID2005）＂. The results of experiments show that the retrieval mechanism proposed by us has vast major effect on the retrieval quality. The paper also verifies the stability of the retrieval mechanism by increasing the number of images from 100 to 2000 and realizes generalized retrieval with the object outside the dataset.
