A Boltzmann machine circuit includes: a plurality of circuits each circuit configured to add one or more first values based on one or more outputs of one or more circuits which are included in the plurality of circuits and are other than the circuit and convert an addition result into an analog signal, compare the analog signal with a second value, and output a comparison result; a plurality of arithmetic circuits configured to multiply the respective comparison results by respective weight values and generate the first values; and a control circuit configured to amplify an amplitude of the analog signal generated by each of the plurality of circuits.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A Boltzmann machine circuit comprising: a plurality of circuits each circuit configured to add one or more first values based on one or more outputs of one or more circuits which are included in the plurality of circuits and are other than the circuit and convert an addition result into an analog signal, compare the analog signal with a second value, and output a comparison result; a plurality of arithmetic circuits configured to multiply the respective comparison results by respective weight values and generate the first values; and a control circuit configured to amplify an amplitude of the analog signal generated by each of the plurality of circuits. 2. The Boltzmann machine circuit according to claim 1, wherein the control circuit equivalently performs annealing by amplifying the amplitude of the analog signal. 3. The Boltzmann machine circuit according to claim 1, wherein each of the plurality of circuits includes: a digital addition circuit configured to add the first values corresponding to digital values; a digital-analog converter configured to convert the addition result output from the digital addition circuit into the analog signal; and a comparator configured to compare the analog signal output from the digital-analog converter with the second value. 4. The Boltzmann machine circuit according to claim 3, wherein the control circuit increases gain of the digital-analog converter to amplify the amplitude of the analog signal. 5. The Boltzmann machine circuit according to claim 1, wherein each of the plurality of arithmetic circuits includes an AND circuit to which the comparison result and the weight value are input. 6. The Boltzmann machine circuit according to claim 1, further comprising: a learning circuit configured to calculate, based on the comparison results from the plurality of circuits, the weight value to be supplied to each of the plurality of arithmetic circuits. 7. The Boltzmann machine circuit according to claim 6, wherein the learning circuit includes: an AND circuit configured to receive the comparison results from the plurality of circuits; a counter circuit configured to count an output of the AND circuit; and an encoder configured to output the weight values based on an output of the counter circuit. 8. A Boltzmann machine circuit comprising: a plurality of circuits each circuit configured to add one or more first values based on one or more outputs of one or more circuits which are included in the plurality of circuits and are other than the circuit, generate a second value based on an addition result, compare the second value with a third value, and outputs a comparison result; a plurality of arithmetic circuits configured to multiply the respective comparison results by respective weight values and generate the first values; and a control circuit configured to equivalently perform annealing by increasing a rate of a variation in the second value relative to a variation in the addition result in each of the plurality of circuits. 9. The Boltzmann machine circuit according to claim 8, wherein each of the plurality of circuit units includes: a digital addition circuit configured to add the first values corresponding to digital values; and a comparator configured to generate the second value based on the addition result output from the digital addition circuit and compare the second value with the third value. 10. The Boltzmann machine circuit according to claim 9, wherein the control circuit increases gain of the comparator to increase the rate of the variation in the second value relative to the variation in the addition result. 11. The Boltzmann machine circuit according to claim 8, wherein each of the plurality of arithmetic circuits includes an AND circuit to which the comparison result and the weight value are input. 12. The Boltzmann machine circuit according to claim 8, further comprising: a learning circuit configured to calculate, based on the comparison results from the plurality of circuits, the weight value to be supplied to each of the plurality of arithmetic circuits. 13. The Boltzmann machine circuit according to claim 12, wherein the learning circuit includes: an AND circuit configured to receive the comparison results from the plurality of circuits; a counter circuit configured to count an output of the AND circuit; and an encoder configured to output the weight values based on an output of the counter circuit. 14. A method for controlling a circuit, comprising: adding, by using a circuit among a plurality of circuits, one or more first values based on one or more outputs of one or more circuits which are included in the plurality of circuits and are other than the circuit; comparing one of an analog value obtained by converting an addition result into an analog signal and a determination value generated based on the addition result, with a corresponding second value; multiplying a comparison result by a weight value to generate the first value; and amplifying one of an amplitude of the analog signal and a rate of a variation in the second value relative to a variation in the addition result.