A method for personalized intelligent wake-up system based on multimodal deep neural network comprises monitoring a sleeping status of a user; obtaining a current sleeping-stage of the user within a current time frame and a prediction of a next sleeping-stage of the user for a next time frame; correcting the current sleeping-stage of the user through combining the current sleeping-stage and the prediction of the next sleeping-stage; determining a wake up strategy for the current time frame; determining a relationship between each of a plurality of alarm impulses adopted to wake up the user and a corresponding reaction of the user; identifying a change in the current sleeping-stage for the current time frame; determining an alarm impulse to be triggered for waking up the user; and triggering the determined alarm impulse.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A method for a personalized intelligent wake-up system based on multimodal deep neural network, comprising: monitoring a sleeping status of a user; obtaining a current sleeping-stage of the user within a current time frame and a prediction of a next sleeping-stage of the user for a next time frame; correcting the current sleeping-stage of the user through combining the current sleeping-stage and the prediction of the next sleeping-stage; based on the current sleeping-stage of the user, prior knowledge learnt from sleep-related research studies, and at least one user preference of waking up, determining a wake up strategy for the current time frame; determining a relationship between each of a plurality of alarm impulses adopted to wake up the user and a corresponding reaction of the user; identifying a change in the current sleeping-stage for the current time frame; based on the wake-up strategy established for the current time frame and the relationship between each of the plurality of alarm impulses and the reaction of the user, determining an alarm impulse to be triggered for waking up the user; and triggering the determined alarm impulse. 2. The method for a personalized intelligent wake-up system based on multimodal deep neural network according to claim 1, wherein obtaining a current sleeping-stage of a user within a current time frame further includes: receiving sensor date provided by a sensor capable of sensing body movements of the user during a sleep; and obtaining the current sleeping-stage of the user according to the sensor date. 3. The method for a personalized intelligent wake-up system based on multimodal deep neural network according to claim 2, wherein obtaining a prediction of a next sleeping-stage of the user for a next time frame further includes: receiving historical data of a plurality of users' sleeping status and personal data of the user sleeping status; and predicting the next sleeping-stage of the user based on a pre-trained sleeping-stage prediction according to the historical data and a personalized sleeping-stage prediction according to the personal data. 4. The method for a personalized intelligent wake-up system based on multimodal deep neural network according to claim 3, wherein: predicting the next sleeping-stage of the user based on a recursive neural network (RNN) model. 5. The method for a personalized intelligent wake-up system based on multimodal deep neural network according to claim 4, wherein correcting the current sleeping-stage of the user through combining the current sleeping-stage and the prediction of the next sleeping-stage further includes: correcting the current sleeping-stage of the user to obtain a corrected current sleeping-stage of the user through combing the sensor data, the pre-trained sleeping-stage prediction, and the personalized sleeping-stage prediction. 6. The method for a personalized intelligent wake-up system based on multimodal deep neural network according to claim 5, wherein: the corrected current sleeping-stage of the user is calculated as: S=αSsensor+(1−α)Sscaled where S denotes the corrected current sleeping-stage of the user, Ssensor denotes the sensor data, Sscaled denotes a scaled prediction of the user's sleep-stage, α denotes a weight. 7. The method for a personalized intelligent wake-up system based on multimodal deep neural network according to claim 6, wherein: the weight α is calculated as α = S wake - S p ′ 2  S wake - S p ′ - S s ′ ; and the Sscaled is calculated as S scales = S w ′ S wake  S predict , where Sp′ denotes a last prediction of the user's sleeping-stage from the RNN model, Ss′ denotes a last inference of the user's sleeping-stage from the sensor data, Swake denotes a wake-up point stage of the user, Sw′ denotes a stage prediction of the wake-up point stage from a last available time frame, and Spredict denotes a current prediction of the user's sleep-stage outputted from the RNN model. 8. The method for a personalized intelligent wake-up system based on multimodal deep neural network according to claim 1, wherein determining a relationship between each of a plurality of alarm impulses adopted to wake up the user and a corresponding reaction of the user further includes: receiving historical data of the reaction of the plurality of users; training a multimodal deep regression model by the historical data of the reaction of the user; collecting personal data of the reaction of the user; and fine tuning the multimodal deep regression model based on the personal data of the reaction of the user. 9. A personalized intelligent wake-up system based on multimodal deep neural network comprising: a robust sleeping-stage detection (RSSD) module configured to monitor a sleeping-stage of a user, obtain a current sleeping-stage of the user within a current time frame, predict a next sleeping-stage of the user for a next time frame, and correct the current sleeping-stage of the user; a wake-up strategy (WS) module configured to receive to establish a wake-up strategy for the current time frame, based on the current sleeping-stage of the user, prior knowledge learnt from sleep-related research studies, and at least one user preference of waking up; an alarm and user reaction regression (AUR) module configured to determine a relationship between each of a plurality of alarm impulses adopted to wake up the user and a corresponding reaction of the user; and a decision fusion (DF) module configured to determine an alarm impulse to be triggered based on the wake-up strategy established for the current time frame and the relationship between each of the plurality of alarm impulses and the reaction of the user, and configured to trigger the alarm impulse. 10. The personalized intelligent wake-up system based on multimodal deep neural network according to claim 9, wherein the RSSD module is further configured to: receive sensor date provided by a sensor capable of sensing body movements of the user during a sleep; and obtain the current sleeping-stage of the user according to the sensor date. 11. The personalized intelligent wake-up system based on multimodal deep neural network according to claim 10, wherein the RSSD module is further configured to: receive historical data of a plurality of users' sleeping status and personal data of the user sleeping status; and predict the next sleeping-stage of the user based on a pre-trained sleeping-stage prediction according to the historical data and a personalized sleeping-stage prediction according to the personal data. 12. The personalized intelligent wake-up system based on multimodal deep neural network according to claim 11, wherein the RSSD module is further configured to: predict the next sleeping-stage of the user based on a recursive neural network (RNN) model. 13. The personalized intelligent wake-up system based on multimodal deep neural network according to claim 12, wherein the RSSD module is further configured to: correct the current sleeping-stage of the user to obtain a corrected current sleeping-stage of the user through combing the sensor data, the pre-trained sleeping-stage prediction, and the personalized sleeping-stage prediction. 14. The personalized intelligent wake-up system based on multimodal deep neural network according to claim 9, wherein the AUR module is further configured to: receive historical data of the corresponding reaction of the plurality of users to each of the plurality of alarm impulses adopted to wake up the plurality of users; train a multimodal deep regression model by the historical data; collect personal data of the corresponding reaction of the user to each of the plurality of alarm impulses adopted to wake up the user; and fine tune the multimodal deep regression model based on the personal data of the reaction of the user. 15. A non-transitory computer-readable medium having computer program for, when being executed by a processor, performing a method for a personalized intelligent wake-up system based on multimodal deep neural network, the method comprising: monitoring a sleeping status of a user; obtaining a current sleeping-stage of the user within a current time frame and a prediction of a next sleeping-stage of the user for a next time frame; correcting the current sleeping-stage of the user through combining the current sleeping-stage and the prediction of the next sleeping-stage; based on the current sleeping-stage of the user, prior knowledge learnt from sleep-related research studies, and at least one user preference of waking up, determining a wake up strategy for the current time frame; determining a relationship between each of a plurality of alarm impulses adopted to wake up the user and a corresponding reaction of the user; identifying a change in the current sleeping-stage for the current time frame; based on the wake-up strategy established for the current time frame and the relationship between each of the plurality of alarm impulses and the reaction of the user, determining an alarm impulse to be triggered for waking up the user; triggering the alarm impulse to wake up the user. 16. The non-transitory computer-readable medium according to claim 15, wherein obtaining a current sleeping-stage of a user within a current time frame further includes: receiving sensor date provided by a sensor capable of sensing body movements of the user during a sleep; and obtaining the current sleeping-stage of the user according to the sensor date. 17. The non-transitory computer-readable medium according to claim 16, wherein obtaining a prediction of a next sleeping-stage of the user for a next time frame further includes: receiving historical data of a plurality of users' sleeping status and personal data of the user sleeping status; and predicting the next sleeping-stage of the user based on a pre-trained sleeping-stage prediction according to the historical data and a personalized sleeping-stage prediction according to the personal data. 18. The non-transitory computer-readable medium according to claim 17, wherein: predicting the next sleeping-stage of the user based on a recursive neural network (RNN) model. 19. The non-transitory computer-readable medium according to claim 18, wherein correcting the current sleeping-stage of the user through combining the current sleeping-stage and the prediction of the next sleeping-stage further includes: correcting the current sleeping-stage of the user to obtain a corrected current sleeping-stage of the user through combing the sensor data, the pre-trained sleeping-stage prediction, and the personalized sleeping-stage prediction. 20. The non-transitory computer-readable medium according to claim 15, wherein determining a relationship between each of a plurality of alarm impulses adopted to wake up the user and a corresponding reaction of the user further includes: receiving historical data of the reaction of the plurality of users; training a multimodal deep regression model by the historical data of the reaction of the user; collecting personal data of the reaction of the user; and fine tuning the multimodal deep regression model based on the personal data of the reaction of the user.