• Usage examples

    # # This function should return a list of pairs (der1, der2), where # der1 is the first derivative of the loss function with respect # to the predicted value, and der2 is the second derivative. pass class UserDefinedMultiClassObjective (object): def calc_ders_multi (self, approxes, target, weight): # approxes indexed container of floats with predictions # for each dimension of single object ...

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  • Alternatives to Count Distinct: Tips for Faster Calculations

     · Distinct counts are critical to analytics, whether it's counting individual patients in a hospital, the number of unique retail transactions, or the number of airplanes in a fleet. Taking distinct counts in Tableau is incredibly easy with a oneclick way to change aggregations to count distinct. It is also, however, one of the more intensive calculations to perform and can be very slow ...

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  • Railway Engineering: Superelevation

    Equilibrium speed When the speed of a vehicle negotiating a curved track is such that the resultant force of the weight of the vehicle and ... the outer rail of the curve is elevated with respect to the ... The provision of negative superelevation for the branch line and the reduction in speed over the main line can be calculated as ...

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  • Frequency Counter

    The SR620 measures time interval, frequency, pulsewidth, rise and fall time, period, phase and events. Time intervals are measured with 25 ps rms resolution, making the SR620 one of the highest resolution counters available. Frequency is measured from Hz to GHz, and a choice of gates ranging from 1 period to 500 seconds is provided.

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  • Arduino based RPM counter with a new and faster algorithm ...

    The RPM values are calculated upto two places of decimals each time. Everyone viewing this must try this project once and share your valuable reviews. Do tell about your experiments and their outcomes related to this algorithm. Suggestions for new projects are welcomed in the comments section. If you like the project, do respect it.

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  • Calculation and Characteristic Analysis of Tooth Width of ...

     · Eccentric helical curveface gear pair is a new type of gear pair consisting of a helical noncircular gear and an eccentric helical curveface gear, which can implement the rotation of intersected axes as well as the movement of output axes. According to the conjugate surface theory and the spatial coordinate transformation theory, the coordinate system, the meshing equation and the tooth ...

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  • how much weight can my stepping motor lift?

    Question #: 879 Question: how much weight can my stepping motor lift? Current Solution. There are two main questions that we can answer with respect to motor torque and the mechanical advantage of lead screws, 1) What torque motor do you need to lift a particular weight, or 2) What maximum weight will my motor torque be able to lift.

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  • conveyor counter weight calculation

    conveyor belt counterweight calculations. Belt Conveyor Counter Weight Calculation Belt MechanicalForce . Dec 20 3 Counter Weight Calculation. The following steps can be taken to calculate the required take up weight for a conveyor: calculate total resistance for the conveyor, this includes the lift of material, acceleration, skirt f.

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  • Speed Distance Time Calculators

    Speed Distance Time Calculators Generic browser based speed, distance and time calculators written in javascript by Nigel Jones for performance oriented cyclists and other racers. If you can run Windows appliions you might prefer a nicer and more compact version of these calculators that ships with my bike gear calculator or the additional functionality of my power calculator .

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  • Understanding Word Embeddings: From Word2Vec to Count .

     · The steps remain the same, only the calculation of hidden activation changes. Instead of just copying the corresponding rows of the inputhidden weight matrix to the hidden layer, an average is taken over all the corresponding rows of the matrix. We can understand this with the above figure. The average vector calculated becomes the hidden ...

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  • What's a FatBurning Heart Rate, and How's It Calculated?

     · To determine your maximum heart rate, subtract your age from 220. For example, a 35yearold woman's maximum heart rate is 220 minus 35 — .

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  • Asynchronous Counters | Sequential Circuits | Electronics ...

    Counter circuits made from cascaded JK flipflops where each clock input receives its pulses from the output of the previous flipflop invariably exhibit a ripple effect, where false output counts are generated between some steps of the count sequence. These types of counter circuits are called asynchronous counters, or ripple counters.

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  • NCERT Solutions For Class 11 Physics Chapter 7 System of ...

    Free PDF download for NCERT Solutions For Class 11 Physics Chapter 7 System of Particles and Rotational Motion to score more marks in exams, prepared by expert Subject teachers from the latest edition of CBSE/NCERT books, NCERT Solutions . (Updated for ) Board Exams Score high with CoolGyan and secure top rank in your exams.

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  • Logarithm Calculator | Log and Antilog Calculator

    An online logarithm calculator to determine the log or inverse of log values with the respect to the given natural base number. Logarithm of a number is defined as the exponent to which another fixed value, the base, must be raised to produce that number.

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  • Conditions for Static Equilibrium | University ...

    As long as the elevator moves up at a constant speed, the result stays the same because the weight [latex] w [/latex] does not change. If the elevator moves up with acceleration, the critical mass is smaller because the weight of [latex] M+m [/latex] becomes larger by an .

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  • Excel formula: Standard deviation calculation | Exceljet

    Excel Formula Training. Formulas are the key to getting things done in Excel. In this accelerated training, you'll learn how to use formulas to manipulate text, work with dates and times, lookup values with VLOOKUP and INDEX MATCH, count and sum with criteria, .

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  • Calculating Commercial Vehicle Weight Distribution ...

     · Weight distribution is the amount of the total vehicle weight imposed on the ground at an axle, group of axles, or an individual wheel. The weight on a truck must be distributed on the axles to comply with the chassis manufacturer's axle ratings and weight laws.

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