This paper presents anew way to extract concept that can beused to improve text classification per-formance (precision and recall). Thecomputational measure will be dividedinto two layers. The bottom layercalled docum...This paper presents anew way to extract concept that can beused to improve text classification per-formance (precision and recall). Thecomputational measure will be dividedinto two layers. The bottom layercalled document layer is concernedwith extracting the concepts of parti-cular document and the upper layercalled category layer is with findingthe description and subject concepts ofparticular category. The relevant im-plementation algorithm that dramatic-ally decreases the search space is dis-cussed in detail. The experiment basedon real-world data collected from Info-Bank shows that the approach is supe-rior to the traditional ones.展开更多
Objective: to study the feasibility of dexmedetomidine in the clinical treatment of elderly patients undergoing lower extremity orthopaedic surgery. Methods: 90 elderly patients undergoing lower extremity orthopedic s...Objective: to study the feasibility of dexmedetomidine in the clinical treatment of elderly patients undergoing lower extremity orthopaedic surgery. Methods: 90 elderly patients undergoing lower extremity orthopedic surgery in our hospital were randomly divided into observation group and control group, with 45 cases in each group. The control group was anesthetized with propofol and the observation group was anesthetized with dexmedetomidine. Results: after careful analysis of the methods of surgical anesthesia, it can be understood that the clinical treatment effect of the observation group is more ideal than that of the control group (P < 0.05);The levels of various indexes in the two groups were analyzed. After the drug disappeared for half a month, the levels of various indexes in the observation group were better than those in the control group (P < 0.05);There was no significant difference in the analgesic effect between the two groups (P > 0.05). Conclusion: the use of dexmedetomidine in the anesthesia of lower limb orthopaedic surgery in elderly patients can make patients obtain a more comfortable experience and be more loved by patients. It is used frequently in clinic.展开更多
基金Project supported by the National Natural Science Foundation of China (No. 60082003) and the National High Technology Research and Development Program of China (N0.863-306-ZD03-04-1).
文摘This paper presents anew way to extract concept that can beused to improve text classification per-formance (precision and recall). Thecomputational measure will be dividedinto two layers. The bottom layercalled document layer is concernedwith extracting the concepts of parti-cular document and the upper layercalled category layer is with findingthe description and subject concepts ofparticular category. The relevant im-plementation algorithm that dramatic-ally decreases the search space is dis-cussed in detail. The experiment basedon real-world data collected from Info-Bank shows that the approach is supe-rior to the traditional ones.
文摘Objective: to study the feasibility of dexmedetomidine in the clinical treatment of elderly patients undergoing lower extremity orthopaedic surgery. Methods: 90 elderly patients undergoing lower extremity orthopedic surgery in our hospital were randomly divided into observation group and control group, with 45 cases in each group. The control group was anesthetized with propofol and the observation group was anesthetized with dexmedetomidine. Results: after careful analysis of the methods of surgical anesthesia, it can be understood that the clinical treatment effect of the observation group is more ideal than that of the control group (P < 0.05);The levels of various indexes in the two groups were analyzed. After the drug disappeared for half a month, the levels of various indexes in the observation group were better than those in the control group (P < 0.05);There was no significant difference in the analgesic effect between the two groups (P > 0.05). Conclusion: the use of dexmedetomidine in the anesthesia of lower limb orthopaedic surgery in elderly patients can make patients obtain a more comfortable experience and be more loved by patients. It is used frequently in clinic.
