Semantic Analytics and Ontologies - Data Governance: Creating Value from Information Assets - page 112

These components indicate that CF1 is determined by defining what the
rate is or how the rate should be calculated as well as what the target of
calculation is. Thus, we represent the target of the calculation or the quan-
tification as a graph that we call an objective graph , while we represent the
way to calculate it or quantify it by a concept that we call a quantifying
concept . Moreover, objective graphs are constructed based on an ontology
that we call Medical Service Ontology (MSO).
We first define MSO below, and then we briefly explain objective graphs and
quantifying concepts. In this chapter, we focus on MSO, therefore, we won't
go beyond briefly mentioning objective graphs and quantifying concepts.
Medical Service Ontology
In this section, we define MSO as vocabulary for calculating formulas
of quality indicators. For example, the calculating formula in the above
section on Quality Indicators uses several words, such as “patients,”
“hospitalize (hospitalization),” and “aged.” In fact, to define quality indi-
cators, it needs words for describing characters of patients, events (medical
services) in hospitals, predicates about patients, and so forth.
MSO is originally introduced in [Takaki et al., 2012] and it is developed
in an ontology developing tool “semantic editor” [Hasida, 2012].
Outline of MSO Concepts
We will first show main concepts in MSO and their main attributes.
To describe results of assessment of medical service quality, the follow-
ing vocabulary words are especially important: patients and their states,
medical services in hospitals to such patients, and outcomes of such medi-
cal services. In many cases, an outcome is represented as an event that
happens in a hospital. For example, death of a patient as an outcome of
a surgery is represented by an event of a death discharge of a hospital.
Therefore, we regard concepts related to patients, states of patients, and
events in hospitals as main concepts in MSO. In the following, we will
explain the main concepts and properties.
Patients
First, we show basic concepts related to patients and their attributes, as
seen in Figure 5.3 .