The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
As traditional Canny operator is manually determined in the threshold for edge detection, we presented an improved Canny algorithm based on adaptive two-dimensional Otsu and Newton Iterative. The algorithm bases on gray distribution characteristics of underwater suspended particles, it uses inter-class variance (Otsu) adaptive algorithm to determine the optimal threshold to connect and trace edge...
For the phonemon for over fitting in the current recommendation system, put forward using the fuzzy scatter difference to the recommendation algorithm. The algorithm avoids the robustness in original collaborative filtering recommendation system for only calculating the user's similarities. The Experimental results show that the system has good accuracy and efficiency of the recommendation under the...
Put the predicting query performance(PQP) into the query fusion and construct a new adaptive information retrieval system(QAAIR) based on performance analysis in the base of analyzing the method of PQP for IR system and expound the main technique. The experiment adopted testing data of TREC Web track show the method can improve the effectiveness of query and overcome the robust of information retrieval.
In order to quickly and accurately using mass information in the deep Web database. According to the characteristics of the deep Web: large-scale, dynamic and heterogeneity. Put forward one new query fusion method based on the prediction query performance (PQP) for the first time. And put forward a new pseudo prediction query performance method. Adopted testing data of UIUC. The experiment show the...
Analyzing the present situation of personalized recommendation system. Point out the limitation of similarity based on voting, and the disadvantage of the strict matching in calculating similarity. Put forward a new personalized recommendation method based on the statistics of item. Adopt the cloud model to calculate the similarity instead of traditional strict matching of cosine method. The experiments...
In order to quickly and accurately using mass information in the deep Web database. According to the characteristics of the deep Web: large-scale, dynamic and heterogeneity, One new query method was put forward based on the document divergence for the first time. The experiment adopted testing data of TREC show the method can avoid the repeat of query document in effect, especially for a great deal...
A protein inhibitor (CMTI-V; M r 7106) of trypsin and activated Hageman factor (Factor XII a ), a serine protease involved in blood coagulation, has been isolated for the first time from pumpkin (Cucurbita maxima) seeds by means of trypsin-affinity chromatography and reverse phase high performance liquid chromatography (HPLC). The dissociation constants of the inhibitor complexes with...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.