Abstract: Apparatuses, systems, and methods for grouping a plurality of patterns extracted from image data are disclosed. In some embodiments, the method for grouping the patterns comprises receiving the image data including the plurality of patterns that represent features to be formed on a portion of a wafer. The method also comprises separating the plurality of patterns after Fourier Transform into multiple sets of patterns. The method further comprises performing, to a respective set of patterns, a hierarchical clustering to obtain a plurality of subsets of patterns by recursively evaluating features related to similarity between patterns within the respective set of patterns.

Abstract: A refrigerator has a door, a lampshade and a lamp set, internal and external clamping walls and a seal retainer formed on the frame of the door. The lampshade and the lamp are set on the inner side of the frame of the door. The lamp is installed on the inner side of the doorframe, so that on the one hand the inner space of the refrigerator is not occupied by the illuminating device, and on the other hand, damage to the lamp caused by placing or taking goods relative to the refrigerator is prevented. Also, the lamp is installed on the door, and the light generated by the lamp irradiates inwardly to enhance the illuminating effect.

Abstract: A refrigerator has a door, a lampshade and a lamp set, internal and external clamping walls and a seal retainer formed on the frame of the door. The lampshade and the lamp are set on the inner side of the frame of the door. The lamp is installed on the inner side of the doorframe, so that on the one hand the inner space of the refrigerator is not occupied by the illuminating device, and on the other hand, damage to the lamp caused by placing or taking goods relative to the refrigerator is prevented. Also, the lamp is installed on the door, and the light generated by the lamp irradiates inwardly to enhance the illuminating effect.

Abstract: This invention disclosed a freezer; and it's control method. The freezer includes the casing and the top board, on which a pad for placing wine cups and bottles and for easy wine pouring is equipped. There is a fast cooling chamber at the ventilation opening of the freezer, and a clapboard to adjust temperature is placed in the freezer, dividing the freezer into two chambers vertically. Air return openings are equipped above and beneath the clapboard. The said fast cooling chamber includes an air outlet pipe. The pipe is fixed on the wall of the freezer, just wrapping the ventilation opening. The said clapboard to adjust temperature includes a board, sealed with tapes at both front and back, making the front part joint the glass door and the back part joint the internal wall of the freezer. At the same time, the air return opening can be open or closed dependent on need to form different temperature control of the fast cooling chamber and the two chambers.