谢谢chinxy的关心!CKR必须包括3个步骤:(1)知识的格式化表达;(2)算法的建立;(3)程序或接口的开发。由于医学知识极端复杂,当前流行的RDF或OWL等方式恐难以充分覆盖,故而才有我的CKR一说。如果你涉及过知识工程的内容,就明白“(1)知识的格式化表达”最为困难的。有了(1),(2)(3)就好说。对于医学知识的格式化表达,我这里只有一些初步的研究,公布如下:
The followings are the CKEFs primarily identified and their instances:
TypeⅠis sub-classified based on a set of BPSRs.
TypeⅠ-1: subject (variable) causes object (variable)
***the hardening of the arteries causes widening of the pulse pressure.
TypeⅠ-2: subject (variable) increases object (variable)
***increase of the systolic ∧/∨ diastolic blood pressure increases risk of heart disease, kidney disease, hardening of the arteries, eye disease and stroke.
TypeⅠ-3: subject (variable) hardens object (variable)
***isolated systolic hypertension hardens the arteries
TypeⅠ-n: subject (variable) affects object (variable)
***Isolated systolic hypertension mainly affects older people
TypeⅡ-1: The features or symptoms of disease include the list of object (variable)
***The features or symptoms of isolated systolic hypertension include widening of the pulse pressure.
Type II-2: The health care methods of an illness include the list of object (variable)
***the health care methods of borderline hypertension include continuing follow-up of blood pressure and monitoring the complications of hypertension
Type Ⅲ-1: Variable O/W is(digital)Value
***blood pressure of Pre-hypertension is between 120/80 and 139/89 mmHg
Type Ⅲ-2: Variable O/W is defined as (∧/∨)Variable O/W
***Isolated systolic hypertension is defined as a systolic pressure above 140 mmHg ∧a diastolic pressure below 90 mmHg.
***Arteriosclerosis is defined as the progressive thickening and hardening of the walls of medium-sized and large arteries.
***The systolic blood pressure is defined as the maximum of blood pressure in the arteries.
***The diastolic blood pressure is defined as the minimum of blood pressure in the arteries.
Type Ⅲ-3: Variable O/W is greater than Variable O/W, domain
***The risk of systolic hypertension is greater than the risk of diastolic hypertension for persons domain lder than 50 years of age
Type Ⅲ-4: Variable O/W is equal to or less than Variable O/W
***Normal blood pressure is equal to or less than 120/80 mmHg
***ideal blood pressure of patients with chronic kidney diseases or with diabetes is equal to or less than 130/80 mmHg
Type Ⅲ-5: Variable O/W is equal to or greater than Variable O/W
***blood pressure of high blood pressure is equal to or greater than 140/90 mmHg
Type Ⅲ-6: Variable O/W is double Variable O/W, domain
***The risk of cardiovascular disease of a blood pressure is double the risk of cardiovascular disease of that blood pressure + 20/10 mmHg, domain: from 115/75 to
Where O/W means(of InfoHost)n or (∧with variable )
[ 本帖最后由 老包 于 2008-5-31 01:20 编辑 ] |