The Model Study Of Task Information-behavior In Information-focus

Along with the fast development of internet and the abroad application of much new type information technology in information era, more and more information category and amount can be utilized. Although information-share dispel the different form between vary information source, due to lacking effective information disposal mechanism, we still have to face tremendous amount of"available information". It's also difficult to get the information what we want.So the information-focus is promoted, based on the analysis of task information-behavior in information-focus, workflow technic is promoted. So the model study of task information-behavior in information-focus become to the study of workflow model in the context of the information-focus application.After introducing some basic concepts of workflow, workflow model. First we analyze the task in information-focus: establishing the rule of the task partition, defining the task executing process and sequence, and describing the task formalized. based on this work, task decomposed arithmetic is imported, which define the dependent relationship strictly between activities, dispel the redundance which is appear in the process of task definition ,arithmetic one: defining the control-dependence between activities, arithmetic two: defining the data-dependence between activities, arithmetic three: defining the activities executing sequence. Based on all of this work, workflow meta-model idea is adopted, we build the task information- behavior model from three angles of organization model, resource model, and process model. Organization model: modeling the organization and role relationship of executor; resource model: modeling the information resource which participate in task adopting resource description method which is task oriented. Process model: modeling the executing process of task. Finally we design a combined_operations task which modeling for explaining the model.futher more the design frame and modeling tool is promoted.The mostly harvest and innovation is: the task formalized description method is promoted; the task decomposed arithmetic is imported; the descriptive method of information resource model adopting task oriented is promoted.