1. A method executed by a computer for generating information relating to risk factors or synergy factors (risk/synergy factors) that influence a business process, the method being based on role relationships among two or more actors who are involved in each scene of the business process, the risk factors being factors associated with loss and the synergy factors being factors associated with profits, the method comprising the steps of: receiving role relationship information showing the role relationship among the two or more actors; receiving a definition value for each of the two or more actors, wherein the definition value is associated with each of the two or more actors and defined for elements to indicate the influence of each of the elements on the factors; selecting a pattern of the role relationship information by matching the received role relationship information with each pattern of role relationships stored on a storage device, the storage device being disposed in the computer and storing definition information of risk/synergy cause-and-effect for each pattern of the role relationships among the two or more actors, the definition information includes a factor predetermined, an element influencing the factor, and a weight value which is defined for the element and for each of the two or more actors and indicates the influence of the element on the factor; wherein the definition information of risk/synergy cause-and-effect indicates a plurality of elements influencing the factors, and weight values for each of which is defined for each of the elements and for each of the two or more actors and indicates the influence of the element on the factors and the definition information of risk/synergy cause-and-effect includes a higher layer including a plurality of factors influencing the business process, a lower layer including the plurality of elements, and at least one intermediate layer which exists between the lower layer and the higher layer and includes a plurality of intermediate elements, each of which associates at least one of the plurality of elements with one of the plurality of factors; wherein the definition information further includes: first weight values, each of which is defined for each of the elements, each of the two or more actors, and each of the intermediate elements associated with each of the elements, and indicates the influence of each of the elements on each of the intermediate elements associated with each of the elements, and second weight values, each of which is defined for each of the intermediate elements and each of the factors, and indicates the influence of the intermediate elements on each of the factors associated with each of the intermediate elements; wherein the receiving the definition value further includes receiving definition values for each of the two or more actors, wherein the definition values are associated with each of the two or more actors and the definition values for each of the elements to indicate the influence of each of the elements on each of the intermediate elements associated with each of the elements; extracting the definition information of risk/synergy cause-and-effect corresponding to the selected pattern of role relationships; generating a sum of values by multiplying, for each of the plurality of elements and for each actor involved in the role relationship, the weight value stored on the extracted definition information with each of the definition values; wherein generating the sum of values further includes: generating a first sum of first values for each of the intermediate elements by multiplying, for each of a plurality of elements influencing the intermediate element and for each actor involved in the role relationship, the weight value corresponding to each of the actors involved in the role relationship and stored in the extracted definition information of risk-synergy cause-and-effect with the definition value of each of the actors involved in the role relationship; generating a second sum of second values for each of the factors by multiplying, for each of a plurality of intermediate elements influencing to the factors, the weight value corresponding to the intermediate element stored in the extracted definition information of risk/synergy cause-and-effect with the first sum of each of the intermediate elements; and storing the sum and the second sum of second values in the storage device.