In the study of recommendation systems,many methods based on predicting ratings have been put forward.However,the rating-predicting methods have some shortages.It pays too much attention to predicting,instead of the n...In the study of recommendation systems,many methods based on predicting ratings have been put forward.However,the rating-predicting methods have some shortages.It pays too much attention to predicting,instead of the nature of recommendation,which is predicting the order of ratings.Thus,we use a pairwise-based learning algorithm to learn our model and take the zero-sampling method to improve our model.In addition,we propose a text modeling method making the recommendations more explicable.It is proved that our system performs better than other state-of-art展开更多
To the Editor:Acne vulgaris is a prevalent skin disorder affecting both physical and psychosocial health.[1]Although photodynamic therapy(PDT)exists for moderate-to-severe acne,due to its adverse reactions,we are stil...To the Editor:Acne vulgaris is a prevalent skin disorder affecting both physical and psychosocial health.[1]Although photodynamic therapy(PDT)exists for moderate-to-severe acne,due to its adverse reactions,we are still looking forward to a novel therapeutic option with fewer side effects.Recently,radiofrequency has been used to treat moderate acne.[2]In this study,we aimed to evaluate the efcacy and safety of moderate-to-severe acne treatment based on a single microneedle with radiofrequency(MRF)vs.PDT during three consecutive sessions through a prospective,randomized,and controlled trial study.展开更多
文摘In the study of recommendation systems,many methods based on predicting ratings have been put forward.However,the rating-predicting methods have some shortages.It pays too much attention to predicting,instead of the nature of recommendation,which is predicting the order of ratings.Thus,we use a pairwise-based learning algorithm to learn our model and take the zero-sampling method to improve our model.In addition,we propose a text modeling method making the recommendations more explicable.It is proved that our system performs better than other state-of-art
基金National Natural Science Foundation of China(Nos.81573074 and 81874246)
文摘To the Editor:Acne vulgaris is a prevalent skin disorder affecting both physical and psychosocial health.[1]Although photodynamic therapy(PDT)exists for moderate-to-severe acne,due to its adverse reactions,we are still looking forward to a novel therapeutic option with fewer side effects.Recently,radiofrequency has been used to treat moderate acne.[2]In this study,we aimed to evaluate the efcacy and safety of moderate-to-severe acne treatment based on a single microneedle with radiofrequency(MRF)vs.PDT during three consecutive sessions through a prospective,randomized,and controlled trial study.
