The Product Sensitive Online Dirichlet Allocation model (PSOLDA) proposed in this paper mainly uses the senti-ment polarity of topic words in the review text to improve the accuracy of topic evolution.First,we use Latent Dirichlet Alloca-tion (LDA) to obt
We propose a systematic method to deduce and syn-thesize the Dafny programs.First,the specification of problem is described in strict mathematical language.Then,the derivation process uses program specification transformation technology to perform equival
“牛耕沃野留祥去,虎越青山送福来”.在人们心中,虎一直是百兽之王,人类祖先与虎共同生存于中华大地300万年.中华虎文化源远流长,虎很早就成为中国的图腾之一,是中华文化中被崇拜的生肖代表,更象征着中华民族勇敢无畏的精神追求.壬寅年,从天干地支来说,寓意着万物生长的转折之年.在民间方言中,“虎”与“福”谐音,无论是“除夕画虎于门冀以御凶”,还是虎头帽、虎头鞋、虎头枕等,都有驱邪纳吉、护佑平安之意.
The traditional distributed tactical training simulation system is limited by the availability and bandwidth of military network transmission channel and does not have the feasibility of remote interconnection and spatial sub-regional deployment.In this p
奥运会是体育与文化共同参与的盛会.全世界对于每一届奥运会的记忆之所以历久弥新,除了因为奥运体育精神的隽永长盛,更镌刻着人们对奥运文明、主办国文化的独特印象.rn回首2008年北京奥运会,“中国印”“祥云火炬”“中国长卷”这些彰显中华文化的奥运元素仍历历在目.14年时光如白驹过隙, 2022年北京冬奥会又如约而至.
Shor in 1994 proposed a quantum polynomial-time algorithm for finding the order r of an element a in the multiplica-tive group Zn*,which can be used to factor the integer n by com-puting gcd(ar/2 ± 1,n),and hence break the famous RSA crypto-system.However
In this paper,we propose a shear high-order gradient(SHOG) operator by combining the shear operator and high-order gradient (HOG) operator.Compared with the HOG operator,the proposed SHOG operator can incorporate more directionality and detect more abunda
你是否身在北半球?如果是,那么不论你在美国、加拿大、俄罗斯、英国还是中国,这几天等一个月朗星灿的晚上,抬头看看星空,找一找北斗星,也就是西方大熊星座尾部的七颗星,你会发现,斗柄指向的方向逐渐从北向东旋转——而当斗柄指向寅位(正东北)时,这就是中国人的春节到了.所以,春节这一天也被称作“斗柄归寅”.
Motion cueing algorithms (MCA) are often applied in the motion simulators.In this paper,a nonlinear optimal MCA,taking into account translational and rotational motions of a simu-lator within its physical limitation,is designed for the motion platform aim
This paper presents a design scheme of wire-line tele-phone system using self-interference (SI) cancellation technology in co-frequency co-time full-duplex (CCFD) system to realize absolute secure communication at the physical layer.This scheme can hide t