本文提出了一种基于典型时间规整(canonical time warping,CTW)算法的形状相似性度量模型,该模型运用动态时间规整(dynamic time warping,DTW)算法和典型相关分析(canonical correlation analysis,CCA),对齐具有不同节点个数的建筑物坐...本文提出了一种基于典型时间规整(canonical time warping,CTW)算法的形状相似性度量模型,该模型运用动态时间规整(dynamic time warping,DTW)算法和典型相关分析(canonical correlation analysis,CCA),对齐具有不同节点个数的建筑物坐标序列,并综合评价不同形状轮廓之间的相似性。该方法直接以矢量坐标作为模型输入而无须复杂的形状编码,顾及了建筑物图形原始的轮廓特征,可高效地应用于形状检索等场景。试验表明,CTW算法在度量形状相似性时具有平移、旋转、缩放和镜像不变性,能有效度量建筑物形状之间的形状相似性,其结果符合人类的空间视觉认知。展开更多
AIM:To investigate usefulness of adherence to gastroesophageal reflux disease(GERD) guideline established by the Spanish Association of Gastroenterology.METHODS:Prospective,observational and multicentre study of 301 p...AIM:To investigate usefulness of adherence to gastroesophageal reflux disease(GERD) guideline established by the Spanish Association of Gastroenterology.METHODS:Prospective,observational and multicentre study of 301 patients with typical symptoms of GERD who should be managed in accordance with guidelines and were attended by gastroenterologists in daily practice.Patients(aged > 18 years) were eligible for inclusion if they had typical symptoms of GERD(heartburn and/or acid regurgitation) as the major complaint in the presence or absence of accompanying atypical symptoms,such as dyspeptic symptoms and/or supraesophageal symptoms.Diagnostic and therapeutic decisions should be made based on specific recommendations of the Spanish clinical practice guideline for GERD which is a widely disseminated and well known instrument among Spanish in digestive disease specialists.RESULTS:Endoscopy was indicated in 123(41%) patients:50 with alarm symptoms,32 with age > 50 years without alarm symptom.Seventy-two patients(58.5%) had esophagitis(grade A,23,grade B,28,grade C,18,grade D,3).In the presence of alarm symptoms,endoscopy was indicated consistently with recommendations in 98% of cases.However,in the absence of alarm symptoms,endoscopy was indicated in 33% of patients > 50 years(not recommended by the guideline).Adherence for proton pump inhibitors(PPIs) therapy was 80%,but doses prescribed were lower(half) in 5% of cases and higher(double) in 15%.Adherence regarding duration of PPI therapy was 69%;duration was shorter than recommended in 1%(4 wk in esophagitis grades C-D) or longer in 30%(8 wk in esophagitis grades A-B or in patients without endoscopy).Treatment response was higher when PPI doses were consistent with guidelines,although differences were not significant(95% vs 85%).CONCLUSION:GERD guideline compliance was quite good although endoscopy was over indicated in patients > 50 years without alarm symptoms;PPIs were prescribed at higher doses and longer duration.展开更多
文摘本文提出了一种基于典型时间规整(canonical time warping,CTW)算法的形状相似性度量模型,该模型运用动态时间规整(dynamic time warping,DTW)算法和典型相关分析(canonical correlation analysis,CCA),对齐具有不同节点个数的建筑物坐标序列,并综合评价不同形状轮廓之间的相似性。该方法直接以矢量坐标作为模型输入而无须复杂的形状编码,顾及了建筑物图形原始的轮廓特征,可高效地应用于形状检索等场景。试验表明,CTW算法在度量形状相似性时具有平移、旋转、缩放和镜像不变性,能有效度量建筑物形状之间的形状相似性,其结果符合人类的空间视觉认知。
文摘AIM:To investigate usefulness of adherence to gastroesophageal reflux disease(GERD) guideline established by the Spanish Association of Gastroenterology.METHODS:Prospective,observational and multicentre study of 301 patients with typical symptoms of GERD who should be managed in accordance with guidelines and were attended by gastroenterologists in daily practice.Patients(aged > 18 years) were eligible for inclusion if they had typical symptoms of GERD(heartburn and/or acid regurgitation) as the major complaint in the presence or absence of accompanying atypical symptoms,such as dyspeptic symptoms and/or supraesophageal symptoms.Diagnostic and therapeutic decisions should be made based on specific recommendations of the Spanish clinical practice guideline for GERD which is a widely disseminated and well known instrument among Spanish in digestive disease specialists.RESULTS:Endoscopy was indicated in 123(41%) patients:50 with alarm symptoms,32 with age > 50 years without alarm symptom.Seventy-two patients(58.5%) had esophagitis(grade A,23,grade B,28,grade C,18,grade D,3).In the presence of alarm symptoms,endoscopy was indicated consistently with recommendations in 98% of cases.However,in the absence of alarm symptoms,endoscopy was indicated in 33% of patients > 50 years(not recommended by the guideline).Adherence for proton pump inhibitors(PPIs) therapy was 80%,but doses prescribed were lower(half) in 5% of cases and higher(double) in 15%.Adherence regarding duration of PPI therapy was 69%;duration was shorter than recommended in 1%(4 wk in esophagitis grades C-D) or longer in 30%(8 wk in esophagitis grades A-B or in patients without endoscopy).Treatment response was higher when PPI doses were consistent with guidelines,although differences were not significant(95% vs 85%).CONCLUSION:GERD guideline compliance was quite good although endoscopy was over indicated in patients > 50 years without alarm symptoms;PPIs were prescribed at higher doses and longer duration.
