3. The conversation analyzing device according to claim 1 , wherein the degree of influence includes an idea provider level index value including a conversation activity increasing rate which is a degree to which the conversation is activated by speech as a component, and the role determining unit determines whether the role is an idea provider based on idea provider level index value.
3. The conversation analyzing device according to claim 1 , wherein the degree of influence includes an idea provider level index value including a conversation activity increasing rate which is a degree to which the conversation is activated by speech as a component, and the role determining unit determines whether the role is an idea provider based on idea provider level index value. 4. The conversation analyzing device according to claim 3 , wherein the idea provider level index value includes a conclusion mention level which is a mention frequency of a conclusive element of the conversation as a component.