Device for modeling decision taking process

FIELD: computer science.

SUBSTANCE: device has two registers blocks, inputs of which are device parameters inputs, pulses multiplication block, four multiplication blocks, comparator, clock pulses generator, adder block, two subtraction blocks, block for multiplication by zero, counter, division block, integrator and register.

EFFECT: broader functional capabilities.

1 dwg

 

The invention relates to automation and computer engineering and can be used in specialized computer equipment to determine the best management strategy in the face of uncertainty.

It is known device, comprising: an element And two counters, a storage unit vectors, two blocks algebraic summation, four register block comparison with tolerance, a switch, a memory block, two delay elements, the element OR [1].

The disadvantage of this device is relatively narrow functionality - limited capacity building selection criteria.

Closest to the claimed device is the device containing the register, two groups of registers, clock, counter, comparator, block multiplication of pulses, two blocks subtraction unit multiplied by "0", two block multiplication, integrator [2]. The device allows you to choose the best management strategy under uncertainty on the sum of the subjective expected utility and risk.

The disadvantage is the closest technical solution is relatively narrow features, not allowing the building of a selection function to determine the relationship of subjective expected utility and risk.

The purpose of the invention is a device which is constructed and functions of choice under uncertainty to specify the ratio of subjective expected utility and risk.

The required technical result is achieved that the device containing the register, two groups of registers, clock, counter, comparator, block multiplication of pulses, two blocks subtraction unit multiplied by "0", two block multiplication, integrator, put 2 block multiplication, summation block, the block division, and the outputs of the groups of registers are connected to first and second inputs of the first block multiplication, and the third input is the factor α device, the first comparator input coupled to the output of the second group of registers, and the second input is the value of Lpdevice, the outputs of the comparator is connected to the second input of the first subtraction unit, the first input of which is log Lpdevice, and the input block is multiplied by "0", the output of which is connected to a second input of the fourth block multiplication, and the first input coupled to the output unit, the first input which is the input values of Lpunit and the second input is connected to the output of the first subtraction unit, the third input of the fourth unit multiplying an input value of 1-α device, and the output is connected to the second input of the summation block, the first input connected to the second output of the first block multiplication, the first output of the first block multiplication connected with the second input of the second block multiplication,the first input is the input value β device, and the output is the first input of the second subtraction unit, the output of the summation block is the second input of the third block multiplication, its first input is input 1-β device, and the output is the second input of the second subtraction unit, the output of the second block subtraction unit subtracting connected with the second input of the integrator, and the output of the integrator with the input of the register is implemented as a shift register, the first input of the integrator connected to the output of the GTI through the block multiplication of pulses whose outputs are connected to inputs of two groups of registers, and the second output of the GTI is connected to the counting input of the counter output overflow which is connected to the stop input of the GTI, and the output is the output of the register is implemented as a shift register.

Analysis of scientific literature showed that prior to the date of filing, there were no device with the specified set of features. Therefore, the proposal meets the requirement of novelty.

In addition, the required technical result is achieved by all the newly introduced set of essential features, which in well-known scientific and technical literature is not detected. Therefore, the proposal meets the requirement of inventive step.

In this case, as will be shown below, are included with the device elements and the blocks are widely used throughout the world is in the electronics and pulse technique, that allows to make a conclusion on compliance of bid to the requirement of industrial applicability.

The drawing shows a structural diagram of a device for modeling decision-making process.

Device for modeling decision-making process consists of two groups of registers 1, 2, block multiplication pulses 3, multiplier units 4, 7, 12, 15, comparator 5, a generator of clock pulses (GTI) 6, summation block 8, block subtracting 9, 14, block multiplied by "0" is 10, the counter 11, unit 13, the integrator 16, the register 17.

The input device inputs are groups of registers 1 and 2, the third input unit 4 multiplication, the second input of the comparator 5, the first input unit of multiplication 7, the first input of the subtraction unit 9, the first input of the multiplication 12, the first input unit 13, a third input of block multiplication 15. The outputs of the groups of registers 1 and 2 are connected to first and second inputs of unit 4 multiplication, and the third input is the ratio of the device. The first input of the comparator 5 is connected to the output of the second group of registers 2. The outputs of the comparator is connected to the second input of the subtraction unit 9 and the input block is multiplied by "0" 10. The output of the subtraction unit 9 is connected to the input unit 13, the output of which is connected to the input of block multiplication 15, furthermore, the input unit multiplying 15 is connected to the output unit 15 multiplication, the third input of which is in the Odom 1-α device. The output of block multiplication 15 is connected with the second input of the summation block 8, the first input which is the output of unit 4 multiplication. The first input of the subtraction unit 9 and unit 13 are input values of Lpdevice. The first input of the multiplication is sign values β device, a second input coupled to the output unit 4 multiplication, and the output is the first input of the subtraction unit 14. The second input of the subtraction unit 14 is connected to the output unit 4 multiplication through the summation block 8, the first input is the input value 1-β devices. The output of the subtraction unit 14 is connected with the second input of the integrator 16, and the output of integrator 16 - input register 17, designed as a shift register, the first input of the integrator 16 is connected to the output GTI 6 through the block of frequency multiplication 3 whose outputs are connected to inputs of groups of registers 1 and 2. The second output GTI 6 is connected to the counting input of the counter 11, the output of the overflow which is connected to the stop input of the GTI 6.

A device for modeling decision-making process as follows.

It is assumed that there are N valid strategies, such as control actionson the system. The probability (possibly subjective probability) of occurrence of the outcome of sjof the many possible outcomes as a result of application of the strategy andispecifies a probability distribution on the set of possible outcomes Psj/ai. Each outcome sjattributed to the subjective value of an outcome. The device allows the processing of all possible alternatives and possible outcomes to choose the best alternative:

where

LP- level of claims corresponding to the smallest value of subjective expected utility, where the outcome will satisfy DM;

α is a coefficient describing the relation of DM risk,

β - coefficient reflecting the ratio of subjective expected utility and risk when building the selection function.

The specified selection algorithm is implemented as follows.

When you run the GTI 6 from an external source, not shown in the drawing, after multiplication unit multiplying the pulses on the number of possible outcomes M, for each pulse in the group of registers 1 records the values of probability Psj/aiand in the group of registers 2 - values of the subjective values of the outcomes

Probability Psj/aiand values outcomes vjand Psj/aiand applied to the input value α are multiplied in the multiplying 4, the outputs of which led the rite to the input of block multiplication 7, and the value ofto the input of the summation block 8.

To the input of the comparator 5 serves the values of the subjective values of the outcomes vjand the level value of the Lp claims and, depending on the comparison result, to the input of block multiplication 15 receives the value of (Lp-vj)/Lp (the condition of the Lp>vjthrough the subtraction unit 9 and unit 13) or "0" (Lp≤vjthrough the block multiplied by "0" 10). The value of Lp is supplied to the inputs of blocks subtracting 9 and division 13.

In addition, the input unit of multiplication 7 is fed the value of the coefficient of β, to the input of the summation block 8 from the output unit 4 multiplication comes is αR, to the input unit 12 multiplication value is 1-βand to the input of block multiplication 15 - value 1-α. As a result, during one step of the GTI m times in the subtraction unit 14 calculates the value of the

and its integration is performed in the integrator 16, the output of which, the value ofis input to the register 17, made in the form of a shift register in which it is compared with the result of integration in the previous step (or zero, which was an initialized shift register 17 when the device starts, if this is the 1st signal).

Thus, after stopping the GTI in whitefish the Alu from the counter 11, in the register 17 is stored maximum value of the difference between subjective expected value and risk, calculated with respect to the level of claims decision-makers, as well as the appropriate strategy, which is input to the shift register 17 from the output of the counter 11.

Sources of information

1. USSR author's certificate No. 1809436, CL G 06 F 7/4, 1991.

2. Patent RU №2214624 CL 7 G 06 F 17/00, G 06 N 7/06.

Device for modeling decision-making process, containing case, two groups of registers, clock (GTI), the counter, the comparator block multiplication of pulses, two blocks subtraction unit multiplied by 0, the two block multiplication, integrator, characterized in that it introduced two block multiplication, summation block, the block division, and to the inputs of the first and second groups of registers, which are input devices that receive, respectively, the values of the probabilities and values of the subjective values of the outcomes, the outputs of the groups of registers are connected to first and second inputs of the first block multiplication, and the third input is the input coefficient α devices that characterize the attitude of the decision maker (DM) to risk, the first comparator input coupled to the output of the second group of registers, and the second input is the value of Lpdevices that characterize the level of the HB claims, corresponding to the smallest value of utility at which the outcome will satisfy DM, the output of the comparator is connected to a second input of the first subtraction unit that calculates the value of Lp- Vjwhere the value of Vjrecorded the second group of registers and characterizes the subjective value of outcomes resulting from the application of the strategy aithe first input of the first subtraction unit is the input values of Lpanother output of the comparator is connected to the input of the block multiplied by 0, the output of which is connected to a second input of the fourth block multiplication, the first input connected to the output unit, the first input which is the input values of Lpand the second input is connected to the output of the first subtraction unit, the third input of the fourth unit multiplying an input value (1-α) devices, and the output is connected to the second input of the summation block, the first input connected to the second output of the first block multiplication, the first output of the first block multiplication connected with the second input of the second block multiplication, the first input is the input value β devices, describing the relation of subjective expected utility and risk when building the selection function, and the output is the first input of the second subtraction unit, the output of the summation block is the second entrance rubs the block multiplication, the first input is input 1-β) devices, and the output is the second input of the second subtraction unit, the output of the second subtraction unit is connected with the second input of the integrator, and the output of the integrator with the input of the register is implemented as a shift register, the first input of the integrator connected to the output of the GTI through the block multiplication of the pulses, the outputs of which are connected to other inputs of two groups of registers, the second output of the GTI is connected to the counting input of the counter, the output of the overflow which is connected to the stop input of the GTI and the other input of the register, the output device is an output register.



 

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