Hon Hai Precision Industry Co., Ltd.

Hong-fu Jin Precision Industry (shenzhen) Co., Ltd.

Chongqing University

Alibaba Group Holding Limited

Zheijiang Jiuzhou Pharmaceutical Co., Ltd.

Shenzhen Yuezhong (group) Co., Ltd.

Promotion Centre of Science and Technology Development, Ministry of Housing and Urban-rural Development of the People's Republic of China

Shen Li

Han-Zheng Zhang

Hongxiang Chai

Jin-Xin Wang

Lian-Cheng Huang

Xu Yang

Wei Chu

Xiao-Bo Li

Lixin Wang

Qilin Zhou

Yuan Qi

Xiaoyan Jiang

Bin Dai

Shaomeng Wang

Shoufei Zhu

Luwei Guo

Zihao Fu

Feng Zhang

Jian Tong Li

Hua Zhao

Qiang He

Wei Kang

Weijie Wang

Songming Tan

Yanrong Bao

Boyu Zou

Xuebin Hu

Qiang Jiang

Song Song

Lei Kong

Hao Gong

Suibing Shen

Limin Li

Yuming Zhou

Canming Zhang

Embodiments of the present disclosure provide a method and system for training a model by using training data. The training data includes a plurality of samples, each sample includes N features, and features in the plurality of samples form N feature columns, and the method includes: determining an importance value of each of the N feature columns; determining whether the importance value of each of the N feature columns satisfies a threshold condition; performing a dimension reduction on M feature columns to generate P feature columns in response to the determination that the importance values of the M feature columns do not satisfy the threshold condition, wherein M&#x3c;N and P&#x3c;M; merging (N&#x2212;M) feature columns having importance values that satisfy the threshold condition and the generated P feature columns to obtain (N&#x2212;M+P) feature columns; and training the model based on the training data including the (N&#x2212;M+P) feature columns.

Method and system for training model by using training data

The present disclosure provides feature data processing methods and devices. One exemplary feature data processing method comprises: classifying features into an important feature set and an auxiliary feature set according to information attribute values of the features; converting features in the auxiliary feature set to hash features; and combining the hash features with features in the important feature set, and setting the combined features as fingerprint features. Training and prediction of to-be-processed data can be performed based on the fingerprint features. With the embodiments of the present disclosure, training dimensions can be more controllable and the amount training data amount can be reduced. Therefore, the efficiency of data processing can be improved.

Feature data processing method and device

A system for treating and recycling rainwater, including at least three stages constructed wetlands disposed along a sloped surface. Each stage constructed wetland includes a coarse gravel layer, a fine gravel layer, an improved soil layer, and wetland plants from bottom to top. Slopes are disposed at two sides of the upper part of each constructed wetland and are different in heights. An intermediate overflow pipe is disposed at the top of the slope between every two adjacent constructed wetlands. A last overflow pipe communicates with a municipal rainwater pipe. The coarse gravel layers of every two adjacent constructed wetlands are connected by connecting pipes. A perforated water collecting pipe is disposed at front ends of the connecting pipes. A water outlet pipe is disposed in the bottom of the coarse gravel layer of a last stage constructed wetland and is connected to a clean water reservoir.

System for treating and recycling rainwater

A system for harvesting rainwater for use in a skirt building. The skirt building includes a main building and a podium supporting the main building. The system includes: a standpipe; a buffer channel; a filter channel; and a green roof. The green roof includes a vegetation region including a baffled diversion corridor, and a bottom filtering layer including a drainage pipe. The standpipe is arranged on the main building and is connected to the buffer channel where the energy of rainwater flowing out of the standpipe is dissipated. The buffer channel, the filter channel, and the green roof are arranged on the podium, and the buffer channel communicates with the filter channel. The filter channel is connected to the green roof. The filter channel is divided into a plurality of sections respectively filled with different matrix materials.

System and method for harvesting rainwater

An integrated system for treating and recycling rainwater in a residential community. The residential community includes low-lying land. The integrated system includes a primary channel for receiving and treating initial rainwater, a baffled water treatment pool, and a reservoir. The primary channel includes an external wall and an inner wall. The baffled water treatment pool includes a water inlet which is disposed on the inner wall of the primary channel. The reservoir includes a water inlet, a gravel filter layer, and an overflow wall. The primary channel, the baffled water treatment pool, and the reservoir are disposed in the low-lying land. The primary channel is annular and surrounds the baffled water treatment pool and the reservoir. The overflow wall of the reservoir cuts off the annular primary channel. The baffled water treatment pool and the reservoir are adjacent to each other and are divided by a shared wall.

Integrated system for treating and recycling rainwater

The present invention relates to a preparation method of carboxylic acids with optical activity, particularly, publishes that very useful chiral carboxylic acids can be obtained by the asymmetric catalytic hydrogenation of tri-substituted &#x3b1;,&#x3b2;-unsaturated carboxylic acids, with the complexes of the chiral phosphor nitrogen ligands and iridium used as the catalysts which show high activity and enantioselectivity (up to 99.8% ee), thus provides a more efficient method with higher enantioselectivity for asymmetric catalytic hydrogenation of chiral carboxylic acid-like compounds, and has important application value to asymmetric hydrogenation of chiral carboxylic acids.

Application of iridium complexes in asymmetric catalytic hydrogenation of unsaturated carboxylic acids

A hinge mechanism includes a first rotation assembly, a second rotation assembly substantially parallel to the first rotation assembly, a first connection member, and a second connection member. The first and second rotation assemblies include a first and second pivoting shafts and a first and second brackets sleeved on the first and second pivoting shafts, respectively, and both the first and second brackets includes an engaging portion eccentrically formed on one end respectively thereof. The first connection member includes two pivotal portions. The pivotal portions are rotatably connected to the engaging portions of the first bracket and the second bracket, respectively. The second connection member is sleeved on the first pivoting shaft and the second pivoting shaft.

Dual axis hinge with eccentric connector

An embodiment of a hinge assembly includes a main body defining a shaft hole, a connecting shaft including an inserting end rotatably received in the shaft hole, and an expansion member forming a tapered portion and axially positioned in the shaft hole. An end surface of the inserting end toward the expansion member defines a tapered hole corresponding to the tapered portion, and the tapered portion is pressed into the tapered hole to expand the inserting end to resist the inner surface of the shaft hole, thus rotatably connecting the connecting shaft to the main body.

Hinge assembly and electronic device using the same

A multi-directional hinge mechanism includes a pair of first rotating assemblies, a second rotating assembly and a connecting member, and is capable of functioning on two perpendicularly-opposed axes.

Multi-directional hinge mechanism

The present invention belongs to a spiro phosphine-oxazoline and preparation method and application thereof, particularly, publishes a novel spiro phosphine-oxazoline and the preparation method of its iridium complex. The substituted 7-diaryl phosphino-7'-carboxy-1,1&#x2032;-Lo-dihydro-indene is used as the starting raw material to synthesize the novel spiro phosphine-oxazoline of the present invention through a two-step reaction. The novel spiro phosphine-oxazoline and the iridium precursor are complexed to become a complex, and then through ion exchange, an iridium/phosphine spiro-oxazoline complex with different anions can be obtained. The present invention overcomes the shortcomings of the existing technology. The cheap readily available amino alcohol is used as the raw material to synthesize the novel spiro phosphine-oxazoline, on the fourth position of the oxazoline ring of which there is no substitutent. The iridium complex of this novel spiro phosphine-oxazoline can catalyze the asymmetric hydrogenation of &#x3b1;-substituted acrylic acid, and shows very high activity and enantioselectivity, therefore has a very high research value and an industrialization prospect.

Spiro phosphine-oxazoline, preparation method and application thereof

A swivel-hinge assembly includes a main plate, a knuckle on the main plate, a first pivot shaft rotatably engaged in the knuckle, at least one end of the first pivot shaft exposed out of the knuckle and a peg positioned on the end of the first pivot shaft exposed out of the knuckle. The peg includes a limiting portion protruding out of the first pivot shaft and abutting an edge of the knuckle, wherein when the first pivot shaft is rotated and reaches a predetermined position the limiting portion of the peg abuts the main plate thereby preventing further rotation of the first pivot shaft.

Swivel-hinge assembly with rotation limiting peg

A slide mechanism includes a fixing plate, a slide plate, and a slide assembly. The fixing plate defines a slide groove and forms a pair of slide rails on opposite sides of the slide groove. The slide plate is positioned on the fixing plate. The slide assembly is positioned between the fixing plate and the slide plate and is allowed an assisted back and forth movement on the slide assembly, and a rotation subjected to friction at the front end of the slide assembly and the slide plate.

Slide mechanism for electronic device

A hinge assembly includes a first pivot shaft, a second pivot shaft, a third pivot shaft, a first bracket, a second bracket, a first meshing wheel, a second meshing wheel, a third meshing wheel, and a transmission belt member sleeved on both the first meshing wheel and the third meshing wheel. The first pivot shaft, the second pivot shaft, and the third pivot shaft are substantially parallel. The first and second brackets are non-rotatably sleeved on the first and second pivot shafts, respectively. The third meshing wheel is disposed between the first meshing wheel and the second meshing wheel, and meshes with the second meshing wheel and the transmission belt member. An electronic device using the hinge assembly is also provided.

A hinge assembly includes a first bracket, a second bracket and a shaft assembly rotatably connecting with the first bracket and the second bracket. The shaft assembly includes a shaft and an elastic member sleeved on the shaft. The shaft extends through the first bracket and the second bracket. The first bracket has a connecting end with a protrusion, the second bracket has a connecting portion defining a curved latching slot and a passing slot communicating with the curved latching slot. The width of the curved latching slot decreases along the curved extending direction, and the width of the protrusion is substantially the same as the width of one end of the curved latching slot, and wider than the other end of the curved latching slot.

Growing community of inventors

Shenzhen, China

Shen Li