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Method for calculating gross vehicle weight and fuel-saving control method

The invention provides a method for calculating gross vehicle weight. The method includes the steps that a gravity acceleration sensor, a controller and a vehicle original engine ECU which are installed on the vehicle are utilized, the controller figures out the current gross vehicle weight based on a vehicle driving kinetic equation by obtaining engine information, vehicle information and dip angle information and acceleration information and then outputs the current gross vehicle weight information outwards, wherein the dip angle information and the acceleration information are output by the gravity acceleration sensor. The vehicle information comprises the current gearbox gear speed ratio information, the final ratio information, the tier rolling radius information, the rolling damping coefficient information, the drag coefficient information, the conversion coefficient information of automobile rotary weight, transmission system mechanical efficiency information, clutch switching state information and the like. The invention further provides a fuel-saving control method. The method includes the steps that the current gross vehicle weight is obtained through calculation, the ratio of the current gross vehicle weight to vehicle full-load gross weight is converted into a loading state, and the ECU selects corresponding engine power output gears according to the received loading state information. The method for calculating the gross vehicle weight and the fuel-saving control method have the advantages that the number of used sensors is small, and calculation results are accurate.
Owner:CHINA FIRST AUTOMOBILE

Deep learning-based advertisement click-through rate prediction method and device

The invention discloses a deep learning-based advertisement click-through rate prediction method and device. The method includes the following steps that: a preset number of training advertisements as well as training click-through rates and training characteristics of each training advertisement are acquired; the training characteristics of each training advertisement are converted into training vectors, a deep learning model is trained by using the training vectors and the training click-through rates of each training advertisement, wherein the deep learning model is realized based on a nonlinear function; and a vector to be tested converted from characteristics to be tested of an advertisement to be tested is obtained, and the vector to be tested is adopted as the input of the deep learning model, and a predictive click-through rate corresponding to the advertisement to be tested is obtained. According to the deep learning model in the method of the invention, nonlinear relationships between the characteristics are fully considered, and thus, after the vector to be tested is inputted into the deep learning model, the deep learning model can efficiently and accurately output the predictive click-through rate corresponding to the vector to be tested based on the nonlinear function.
Owner:SHANGHAI TRUELAND INFORMATION & TECH CO LTD
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