A device for estimating a deleted fluid consumption during a deletion phase, where said device comprises: a collection module configured to collect: a) first consumption data comprising information about the consumption of fluid from n fluid meters coming from a first group, and b) second consumption data comprising information about the consumption of fluid from m fluid meters coming from a second group, a computer analysis module which is configured for calculating, as a function of the first and second consumption data weighting coefficients βi minimizing the distance between the fluid consumptions of the first and second groups, where i is a positive integer included between 1 and m.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A method for estimation of a deleted fluid consumption during a deletion phase, said method implemented by computer means comprising: during a learning phase: a first collection step which consists of collecting first consumption data comprising information about the consumption of fluid from n fluid meters coming from a first group, where n is a positive integer and where said n fluid meters from the first group have subscribed to a deletion service; a second collection step which consists of collecting second consumption data comprising information about the consumption of fluid from m fluid meters coming from a second group, where m is a positive integer and where said m fluid meters from the second group have not subscribed to a deletion service; a step of analysis of the first and second collected consumption data during which weighting coefficients βi are calculated as a function of these first and second consumption data so as to minimize the distance between the fluid consumption of the first and second groups, where i is a positive integer included between 1 and m; and a determination step during which a control group is determined from the second collected consumption data coming from m fluid meters from the second group and as a function of the weighting coefficients βi calculated during the analysis step; and during the deletion phase: an estimation step consisting of estimating the deleted fluid consumption during a deletion phase by calculating the difference between the fluid consumption of the control group and the average fluid consumption of the n fluid meters from the first group. 2. The method according to claim 1, wherein the weighting coefficients are calculated during the analysis step so as to solve the following equation: arg   min β 1   …   β m  ( dist  ( P _ 1  ( t ) - ∑ j = 1 m  β j  P 2 , j  ( t ) ) ) in which: P2,j(t) is the individual fluid consumption during the learning phase of the fluid meter j belonging to the second group; and P1(t) is the average fluid consumption during the learning phase of the n fluid meters from the first group. 3. The method according to claim 1, wherein m is strictly greater than n. 4. The method according to claim 1, wherein, during the analysis step, the calculation of weighting coefficients βi comprises a sequential selection of fluid meters from the second group minimizing the distance between the fluid consumptions of the first and second groups. 5. The method according to claim 4, wherein, during the analysis step, a value of “1” is assigned to the weighting coefficient βk if the individual fluid consumption of the fluid meter k from the second group is selected and a value of “0” is assigned otherwise, where k is a positive integer included between 1 and m. 6. The method according to claim 4, wherein the step of determination of the control group comprises the calculation of the average fluid consumption P2(t) of the second group as a function of the weighting coefficients, where such a calculation is preferably done according to the following mathematical formula: P _ 2  ( t ) = 1 ∑ j = 1 m  β j  ∑ j = 1 m  β j  P 2 , j  ( t ) in which P2,j (t) is the individual fluid consumption during the learning phase of the fluid meter j belonging to the second group. 7. The method according to claim 1, wherein, during the analysis step, the calculation of the weighting coefficients βi comprises a linear regression of the average fluid consumption of the n fluid meters from the first group over the individual fluid consumption of each of the m fluid meters from the second group. 8. The method according to claim 7, wherein the linear regression is a constrained linear regression. 9. The method according to claim 7, wherein the linear regression is a Ridge type constrained linear regression. 10. The method according to claim 7, wherein the linear regression is a Lasso type constrained linear regression. 11. The method according to claim 7, wherein the linear regression is an elastic net type constrained linear regression. 12. The method according to claim 7, wherein the linear regression is of PLS or PCR type. 13. The method according to claim 7, wherein the step of determination of the control group comprises the calculation of the average fluid consumption P2 (t) of the second group as a function of the weighting coefficients, where such a calculation is preferably done according to the following mathematical formula: P2(t)=Σj=1mβj,P2,j(t) in which P2,j(t) is the individual fluid consumption during the learning phase of the fluid meter j belonging to the second group. 14. The method according to claim 1, wherein the fluid consumption is an electric power representative of the consumed electric power. 15. A non-transmissible computer-readable storage medium comprising a computer program comprising instructions for executing the steps of the estimation method according to claim 1, when said computer program is executed by a computer. 16. (canceled) 17. A device for estimation of the deleted fluid consumption during the deletion phase, where said device comprises: a collection module configured to collect: a) first consumption data comprising information about the consumption of fluid from n fluid meters coming from a first group, where n is a positive integer and where said n fluid meters from the first group have subscribed to a deletion service; and b) second consumption data comprising information about the consumption of fluid from m fluid meters coming from a second group, where m is a positive integer and where said m fluid meters from the second group have not subscribed to a deletion service; and a computer analysis module which is configured for calculating, as a function of the first and second consumption data weighting coefficients βi minimizing the distance between the fluid consumptions of the first and second groups, where i is a positive integer included between 1 and m; a processor configured to determine a control group from the second consumption data collected coming from m fluid meters from the second group, and as a function of said weighting coefficients βi calculated by the computer analysis module; and an estimation computer module configured for estimating the deleted fluid consumption during a deletion phase by calculating the difference between the fluid consumption of the control group and the average fluid consumption of the n fluid meters from the first group. 18. The device according to claim 17, further comprising computer means configured for implementation of the method for estimation of a deleted fluid consumption during a deletion phase, said method implemented by computer means comprising: during a learning phase: a first collection step which consists of collecting first consumption data f comprising information about the consumption of fluid from n fluid meters coming from a first group, where n is a positive integer and where said n fluid meters from the first group have subscribed to a deletion service; a second collection step which consists of collecting second consumption data comprising information about the consumption of fluid from m fluid meters coming from a second group, where m is a positive integer and where said m fluid meters from the second group have not subscribed to a deletion service; a step of analysis of the first and second collected consumption data during which weighting coefficients βi are calculated as a function of these first and second consumption data so as to minimize the distance between the fluid consumption of the first and second groups, where i is a positive integer included between 1 and m; and a determination step during which a control group is determined from the second collected consumption data coming from m fluid meters from the second group and as a function of the weighting coefficients βi calculated during the analysis step; and during the deletion phase: an estimation step consisting of estimating the deleted fluid consumption during a deletion phase by calculating the difference between the fluid consumption of the control group and the average fluid consumption of the n fluid meters from the first group.