Abstract: The present invention concerns a novel method to efficiently score documents (texts, images, audios, videos, and any other information file) by using a machine-learned ranking function modeled by an additive ensemble of regression trees. A main contribution is a new representation of the tree ensemble based on bitvectors, where the tree traversal, aimed to detect the leaves that contribute to the final scoring of a document, is performed through efficient logical bitwise operations. In addition, the traversal is not performed one tree after another, as one would expect, but it is interleaved, feature by feature, over the whole tree ensemble. Tests conducted on publicly available LtR datasets confirm unprecedented speedups (up to 6.5×) over the best state-of-the-art methods.

Abstract: The present invention concerns a novel method to efficiently score documents (texts, images, audios, videos, and any other information file) by using a machine-learned ranking function modeled by an additive ensemble of regression trees. A main contribution is a new representation of the tree ensemble based on bitvectors, where the tree traversal, aimed to detect the leaves that contribute to the final scoring of a document, is performed through efficient logical bitwise operations. In addition, the traversal is not performed one tree after another, as one would expect, but it is interleaved, feature by feature, over the whole tree ensemble. Tests conducted on publicly available LtR datasets confirm unprecedented speedups (up to 6.5×) over the best state-of-the-art methods.

Abstract: A ventilated facade system includes a support frame fixed to a surface of a wall to be covered; a plurality of covering panels, each having an outer face and an opposite rear face and being fixed to the support frame in a selected arrangement; a plurality of fixing units that fix the panels to the frame and include a first plate-shaped support element having a flat body, which is fixed to the frame and has an outwardly-projecting and shear-resistant first support bracket lip; a second plate-shaped support element having a plate body with one edge folded to form an acute angle to be inserted into a corresponding cavity formed in the rear face, the support element being resistant to tensile stress and having a portion designed to be fixed to the frame; and a third flat element guiding concurrent edges of contiguous panels, which is fixed to the frame.

Abstract: As substrate for making a sensitive floor includes a first frame made of high-conductivity sensing elements having a first orientation; a second frame made of high-conductivity sensing elements, which is adapted to be laid on the first frame and has a second orientation, other than the first orientation, the second frame forming a support layer for floor finishing products; and an element made of a conductive material, which includes an elastically compressible layer having a thickness, two opposite faces contacting the first and second frames, and an electric resistor whose resistance is proportional to the thickness.

Abstract: A surface covering foundation includes a first covering element having a thickness and defining a first juxtaposition side; a second covering element having a thickness substantially equal to that of the first element and defining a second juxtaposition side, adapted to be juxtaposed with the first side, the first element having a lip that forms an outward extension of the first juxtaposition side and is adapted to overlap the second juxtaposition side in a juxtaposed configuration of the first and the second covering elements.

Abstract: A surface covering foundation includes a first covering element having a thickness and defining a first juxtaposition side; a second covering element having a thickness substantially equal to that of the first element and defining a second juxtaposition side, adapted to be juxtaposed with the first side, the first element having a lip that forms an outward extension of the first juxtaposition side and is adapted to overlap the second juxtaposition side in a juxtaposed configuration of the first and the second covering elements.