Abstract: An associated event group preparation unit calculates a degree of association between the events on the basis of an event matrix, and prepares an associated event group for each event. A cause-and-effect relationship model establishment unit establishes a probabilistic cause-and-effect relationship model by a Bayesian network on the basis of the event matrix, for each associated event group. An improvement candidate pattern receiving unit receives a setting of an improvement candidate pattern in which a condition of an event to be set as an improvement candidate is determined by attributes of the base point event and the associated event and a conditional probability between the base point event and the associated event. A pattern analysis unit extracts a probabilistic cause-and-effect relationship model conforming to any one of the set improvement candidate patterns, from the established probabilistic cause-and-effect relationship models for each event.

Abstract: An associated event group preparation unit calculates a degree of association between the events on the basis of an event matrix, and prepares an associated event group for each event. A cause-and-effect relationship model establishment unit establishes a probabilistic cause-and-effect relationship model by a Bayesian network on the basis of the event matrix, for each associated event group. An improvement candidate pattern receiving unit receives a setting of an improvement candidate pattern in which a condition of an event to be set as an improvement candidate is determined by attributes of the base point event and the associated event and a conditional probability between the base point event and the associated event. A pattern analysis unit extracts a probabilistic cause-and-effect relationship model conforming to any one of the set improvement candidate patterns, from the established probabilistic cause-and-effect relationship models for each event.

Abstract: A fermented tea produced by primary-drying tea material leaves by means of a primary tea rolling dryer (primary drying step) to adjust the moisture content of raw leaves (tea material leaves) of bancha with low qualities (the second crop of tea, the third crop of tea, the shuto-bancha, the skiffed leaves of tea, and the like) to a constant moisture; subsequently, providing them in a tea roller (tea rolling step); adding loquat leaves during the tea rolling step in order to knead loquat leaves together with the tea material leaves; and fermenting and drying the kneaded tea material leaves and loquat leaves. The fermented tea is formed into a composition having, as an active component, the fermented tea obtained by tea-rolling processing of tea material leaves and loquat leaves, and an extract contained in the fermented tea.

Abstract: A fermented tea produced by primary-drying tea material leaves by means of a primary tea rolling dryer (primary drying step) to adjust the moisture content of raw leaves (tea material leaves) of bancha with low qualities (the second crop of tea, the third crop of tea, the shuto-bancha, the skiffed leaves of tea, and the like) to a constant moisture; subsequently, providing them in a tea roller (tea rolling step); adding loquat leaves during the tea rolling step in order to knead loquat leaves together with the tea material leaves; and fermenting and drying the kneaded tea material leaves and loquat leaves. The fermented tea is formed into a composition having, as an active component, the fermented tea obtained by tea-rolling processing of tea material leaves and loquat leaves, and an extract contained in the fermented tea.