Low-power wide-area network technologies such as long-range (LoRaWAN) are promising for collecting low-rate monitoring data from geographically distributed sensors, in which timestamping the sensor is a critical system function. This article considers synchronization-free approach to LoRaWAN uplink based on signal arrival time at gateway, well matches LoRaWAN’s one-hop star topology and release...

AbstractRecent studies have shown that Deep Neural Networks (DNNs) are vulnerable to the backdoor attacks, which leads malicious behaviors of DNNs when specific triggers attached input images. It was further demonstrated infected possess a collection channels, more sensitive compared with normal channels. Pruning these channels then be effective in mitigating behaviors. To locate those it is na...

Data-free knowledge distillation (DFKD) has recently been attracting increasing attention from research communities, attributed to its capability compress a model only using synthetic data. Despite the encouraging results achieved, state-of-the-art DFKD methods still suffer inefficiency of data synthesis, making data-free training process extremely time-consuming and thus inapplicable for large...