Zero Exchange has several characteristics to manage relationships of participants. These characteristics are listed below.
- Reputation
Reputation of participant - is a set of numerical characteristics, that are based on the transaction history of the participant. Reputation expresses the worth of given participant for the community.
- The cumulative quality of obligations execution
Cumulative quality Q expresses how well the participant performs its obligations under the contracts in which he acted as a supplier of goods or services. After the each deal it is recalculated as follows:
where
- Qn+1 is a next cumulative quality value.
- Sn = Qn * n
- Mp is a total number of deals with the current consumer.
- mp is the quality grade of the current deal evaluated by the current consumer.
- Qp is a cumulative quality of the consumer (at the time of the deal).
- Cumulative score of adequacy
Score of adequacy V expresses difference between the product cost which is declared by producer and the consumers' expectations. After the each deal it is recalculated as follows:
where
- Vn+1 is a next value of the cumulative score of adequacy.
- Sn = Vn * n.
- Mp is a total number of deals with the current consumer.
- mp is the score of the adequacy of the current deal evaluated by the current consumer.
- Vp is validity rate of the consumer (at the time of the deal).
- The cumulative quality of obligations execution
- Credit Amount
Anyone can take a number of conventional units in debt at interest-free basis. Repayment of a debt occurs every time a participant provides goods or services in exchange for conventional units. The amount of the next repayment is determined as follows:
where
- K is the total number of credits was taken by user.
- fc(ti) is the function of the conventional units 'aging' depending on time passed after moment user took the ith credit.
- Ri is the rest of the amount for repaying for ith credit.
- V is the value user received as the implemented contract's demand.
- I determines part of V will be taken away as the credit repayment.
The maximal number of units, which participant can borrow is calculated as follows:
where
- C is a the maximal amount of the credit available for the user at the moment.
- Q is the user's quality rate
- V is the user's validity rate
- Cij is cost of the jth deal with the ith partner.
- N is a total number of the user's partners.
- Mi is the number of the deals with ith partner.
- fc(ti) is the function of the conventional units 'aging' depending on time passed after moment user took the kth credit.
- Rk is the rest of the amount for repaying for kth credit.
- Sale Resistance
The sale resistance number expresses the degree of difficulty of exchange of the particular class of products. This coefficient can be calculated as k(c)=S(c)/D(c), where
- S(c) is a supply of the products of the class c.
- D(c) is a demand of the products of the class c.
- Product cost
From the perspective of the seller the cost of the product depends on the amount of time spent to the production. On the other hand, the price at which you can sell a product depends on the balance of supply and demand. Product quality as well affect the success of the sale. Considering all these factors, we can express the value of the product in the conventional units:
where
- Q is a the cumulative quality of obligations execution.
- t is the time which user spent for the product production (in hours).
- k(c) is a sale resistance coefficient.
The user can accumulate payments it receives in the exchange of goods and services. The total value of 'wallet' of each participant is the sum of all unexpired payments belonging to that participant. The value of each payment decreases over the time in accordance with the following formula:
v'=v/fc(t)
where- v is the initial payment value.
- fc(t) is the function of the conventional units 'aging' depending on time passed after moment user received the payment.
When v' reaches zero, the payment disappears. When user pays for the needed product using the conventional units, then most old payments are used first in the transaction.