1. A computer program product comprising a non-transitory computer readable storage medium having program code embodied therewith, the program code being executable by a processor to:
generate a key that is associated with a first entity that is associated with a spacetime region, wherein the spacetime region represents a spatial region, a time interval, and a non-spatial feature, and wherein the first entity is associated with the spacetime region based on spacetime coordinates for the first entity;
generate an anonymized key to be associated with the first entity from the key, the anonymized key and the key representing the spacetime region with which the first entity is associated; and
compare the anonymized key with a previously anonymized key that is associated with a second entity to discover spacetime co-occurrence of the first entity and the second entity in the spacetime region.
2. The computer program product of claim 1, wherein the spacetime region comprises a plurality of dimensions, the plurality of dimensions including one or more of:
spatial dimensions describing the spatial region, the spatial dimensions including one or more of: a longitude coordinate and a latitude coordinate,
non-spatial dimensions describing the spatial region, and
a temporal dimension describing the time interval.
3. The computer program product of claim 2, wherein a granularity of one or more dimensions is configurable.
4. The computer program product of claim 2, wherein the temporal dimension of the spacetime region is represented as a set of numerical values that represent one or more of: a year, a month, a day, an hour, a minute, a second, and a millisecond.
5. The computer program product of claim 2, further comprising program code executable by a processor to:
receive data representing an observation of the first entity, wherein the data includes a precision of at least one dimension; and
associate the data with the spacetime region based on a qualification criterion.
6. The computer program product of claim 5, wherein the qualification criterion is related to a granularity of at least some of the dimensions and is one of: a predefined qualification criterion and a dynamically derived qualification criterion.
7. The computer program product of claim 1, wherein the anonymized key is created by using one of: a reversible cryptographic algorithm and an irreversible cryptographic algorithm.
8. The computer program product of claim 1, further comprising program code executable by a processor to:
store the discovery of the spacetime co-occurrence of the first entity with the second entity.
9. The computer program product of claim 1, further comprising program code executable by a processor to:
determine whether the first entity is associated with a particular set of one or more spacetime regions on at least a certain number of occasions over a certain time interval; and
in response to a positive determination, flag the first entity as a hanging out entity.
10. The computer program product of claim 1, wherein the first entity is one of a person, a place, a thing, and an event.
11. A system, comprising:
a processor; and
a memory containing instructions that when executed by the processor causes the processor to:
generate a key that is associated with a first entity that is associated with a spacetime region, wherein the spacetime region represents a spatial region, a time interval, and a non-spatial feature, and wherein the first entity is associated with the spacetime region based on spacetime coordinates for the first entity;
generate an anonymized key to be associated with the first entity from the key, the anonymized key and the key representing the spacetime region with which the first entity is associated; and
compare the anonymized key with a previously anonymized key that is associated with a second entity to discover spacetime co-occurrence of the first entity and the second entity in the spacetime region.
12. The system of claim 11, wherein the spacetime region comprises a plurality of dimensions, the plurality of dimensions including one or more of:
spatial dimensions describing the spatial region, the spatial dimensions including one or more of: a longitude coordinate and a latitude coordinate,
non-spatial dimensions describing the spatial region, and
a temporal dimension describing the time interval.
13. The system of claim 12, wherein a granularity of one or more dimensions is configurable.
14. The system of claim 12, wherein the temporal dimension of the spacetime region is represented as a set of numerical values that represent one or more of: a year, a month, a day, an hour, a minute, a second, and a millisecond.
15. The system of claim 12, wherein the instructions, when executed by the processor, causes the processor to:
receive data representing an observation of the first entity, wherein the data includes a precision of at least one dimension; and
associate the data with the spacetime region based on a qualification criterion.
16. The system of claim 15, wherein the qualification criterion is related to a granularity of at least some of the dimensions and is one of: a predefined qualification criterion and a dynamically derived qualification criterion.
17. The system of claim 11, wherein the anonymized key is created by using one of: a reversible cryptographic algorithm and an irreversible cryptographic algorithm.
18. The system of claim 11, wherein the instructions, when executed by the processor, causes the processor to:
store the discovery of the spacetime co-occurrence of the first entity with the second entity.
19. The system of claim 11, wherein the instructions, when executed by the processor, causes the processor to:
determine whether the first entity is associated with a particular set of one or more spacetime regions on at least a certain number of occasions over a certain time interval; and
in response to a positive determination, flag the first entity as a hanging out entity.
20. The system of claim 11, wherein the first entity is one of a person, a place, a thing, and an event.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A gas generator for an airbag comprising:
a housing having gas discharge ports;
an ignition means accommodating chamber formed in a central part of the housing;
an ignition means installed in the ignition means accommodating chamber;
a gas generating means to be ignited by the ignition means and generate a gas; and
a cooling and cleaning means for cooling and cleaning the gas generated by the gas generating means;
wherein the ignition means includes a transfer charge container and an igniter, the transfer charge container having a cup for accommodating the transfer charge and a cover for hermetically closing the cup, the igniter to be activated by a signal and ignite the transfer charge;
wherein the gas generated by the gas generating means in response to an impact is introduced into an airbag to protect an occupant against the impact;
wherein the transfer charge container comprises a cup part and a cover part, either of the bottoms of the cup part and the cover part being outwardly curved to form an outwardly convex surface, the container being resiliently held between a top wall portion of the ignition means accommodating chamber and the igniter.