Abstract: In an approach for detecting islanding effect in a power electrical network topology, a computer processor finds, in the power electrical network topology, a point of common coupling between a load and a distributed generation with potential islanding effect as well as a substation supplying power to said point of common coupling; collects operating parameters of the power grid in vicinity of said point of common coupling as well as in vicinity of said substation; determines whether islanding effect exists in said distributed generation and the load in accordance with a variation characteristic of the operating parameters of the power grid in vicinity of said point of common coupling and the operating parameters of the power grid in vicinity of said substation. Higher degree of accuracy and sensitivity of detecting islanding effect is achieved without compromising the energy quality on user side according to embodiments of the present invention.

Abstract: A mechanism is provided for predicting and reducing product return. For a historical regular product purchase associated with a current product purchase by a customer, a distribution of a number of product purchases and a distribution of a number of product returns is generated. A determination is made of a probability of return of the current product as a function of the number of product purchases, the number of product returns, a distance, and a browsing time. Responsive to the identified probability of return being greater than a predetermined threshold, the identified probability of return is used to reduce the probability of return of the product through one or more interactions with the product.

Abstract: A mechanism is provided for predicting and reducing product return. For a historical regular product purchase associated with a current product purchase by a customer, a distribution of a number of product purchases and a distribution of a number of product returns is generated. A determination is made of a probability of return of the current product as a function of the number of product purchases, the number of product returns, a distance, and a browsing time. Responsive to the identified probability of return being greater than a predetermined threshold, the identified probability of return is used to reduce the probability of return of the product through one or more interactions with the product.

Abstract: In an approach for detecting islanding effect in a power electrical network topology, a computer processor finds, in the power electrical network topology, a point of common coupling between a load and a distributed generation with potential islanding effect as well as a substation supplying power to said point of common coupling; collects operating parameters of the power grid in vicinity of said point of common coupling as well as in vicinity of said substation; determines whether islanding effect exists in said distributed generation and the load in accordance with a variation characteristic of the operating parameters of the power grid in vicinity of said point of common coupling and the operating parameters of the power grid in vicinity of said substation. Higher degree of accuracy and sensitivity of detecting islanding effect is achieved without compromising the energy quality on user side according to embodiments of the present invention.