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S | Set of selected winners |
Sn | Set of participants at night |
Sd | Set of participants in the daytime |
| Night backup assembly |
mi | The median of the time period reported by the participant i |
s | Start time of participating in sensing task |
e | End time of participating in sensing task |
W | A unit time period of sensing task |
Ts | The start time of a unit time period |
Te | The end time of a unit time period |
| The length of a time window |
si | Start time reported by participant i |
ei | End time reported by participant i |
Weight | The ratio of participants in the reported daytime period to all participants |
D | Price pool reward |
pi | Rewards received by participant i |
bi | Bid price of participant i |
ai | Extra rewards received by participant i |
di | Price pool reward received by participant i |
U, ui | Set of participants, participant i |
| Represents the sensing time of participant i in the k-th time window |
| Bid price of participant i in the k-th time window |
| Reliability of participant i in the k-th time window |
ri | Credit value of participant i |
| Sensing data volume of participant i in the k-th time window |
| Device battery of participant i in the k-th time window |
| Data benefit of the k-th time window |
| Trust status feedback value of participant i in the k-th time window |
| Degree of willingness to participate of participant i in the k-th time window |
| Data quality uploaded by participant i in the k-th time window |
| Rewards received by participant i in the k-th time window |
| Timeliness, completeness, accuracy, value |
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