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RSS订阅原创 GraphLossoCV & affinity_propagation
'''from sklearn import datasets, model_selection, svm, decomposition, pipeline, metricsimport matplotlib.pyplot as pltlfw_people = datasets.fetch_lfw_people(min_faces_per_person=70, resize=.4)n_...
2019-06-14 16:38:55
439
原创 pipelining in sklearn
import numpyfrom sklearn import linear_model, decomposition, pipeline, model_selection, datasetspca = decomposition.PCA()logistic = linear_model.SGDClassifier('log')pipe = pipeline.Pipeline([('p...
2019-06-12 18:08:54
266
原创 model selection in sklean
cross_val_scoreimport numpyfrom sklearn import svm, model_selection, datasetsdigit = datasets.load_digits()x = digit.datay = digit.targetcs = numpy.logspace(-10, 0, 11)mean_scores = []std_...
2019-06-12 16:32:38
287
原创 PCA vs ICA
PCAimport numpyfrom sklearn import decompositionx1 = numpy.random.normal(size=100)x2 = numpy.random.normal(size=100)x3 = x1+x2x = numpy.c_[x1, x2, x3]# pca = decomposition.PCA()# pca.fit(x...
2019-06-10 23:32:01
235
原创 feature agglomeration
from sklearn import cluster, datasetsfrom sklearn.feature_extraction.image import grid_to_graphdigit = datasets.load_digits()images = digit.imagesx = images.reshape((len(images), -1))agg = clus...
2019-06-10 23:14:57
952
原创 vector quantization
from scipy import miscfrom sklearn import clusterimport numpyface = misc.face(gray=True)x = face.reshape((-1,1))kmeans = cluster.KMeans(n_clusters=5)kmeans.fit(x)labels = kmeans.labels_value...
2019-06-10 23:04:07
634
原创 kmeans
from sklearn import cluster, datasetsiris = datasets.load_iris()x = iris.data[:, :4]y = iris.targetkmeans = cluster.KMeans(n_clusters=3)kmeans.fit(x, y)y_ = kmeans.predict(x)print(y[::10])pr...
2019-06-10 21:55:39
231
原创 KNN vs Logistic Regression vs SVM
import numpyfrom sklearn import svm, linear_model, neighbors, datasetsimport timedef predict(): digit = datasets.load_digits() x = digit.data/digit.data.max() y = digit.target n...
2019-06-10 14:09:15
677
原创 Native Bayes Find Ham Mail
import numpyimport randomdef get_vac_list(data): vac_list = [] for v in data: for vv in v: if len(vv) > 2: vac_list.append(vv) return list(set(v...
2019-06-07 18:43:20
238
原创 [install gcc6.1.0]error: Unable to find a suitable type for HOST_WIDE_INT
unset LIBRARY_PATH CPATH C_INCLUDE_PATH PKG_CONFIG_PATH CPLUS_INCLUDE_PATH INCLUDE
2019-04-27 14:01:16
1892
3
转载 Installing gcc 6.1 on centos 7
yum installlibmpc-develmpfr-develgmp-devel yuminstallzlib-devel* cd ~/Downloads curl ftp://ftp.gnu.org/pub/gnu/gcc/gcc-6.1.0/gcc-6.1.0.tar.bz2-O tarxvfjgcc-6.1.0.tar.bz2 cd gcc-6.1.0 ./c...
2019-04-26 15:42:53
419
原创 golang simple test
190416.gopackage _90416import "errors"func Division(a, b float64) (float64, error) { if b == 0 { return 0, errors.New("cannot be divided by 0") } return a/b, nil}190416_test.gopacka...
2019-04-17 17:10:17
207
原创 Golang Read And Write Etcd
package mainimport ( "go.etcd.io/etcd/clientv3" "fmt" "time" "context" "encoding/json")type SecInfoConf struct { ProductId int StartTime int EndTime int Status int Total int Left int...
2019-04-12 18:31:30
303
原创 Words 20190411
susceptible[sə'septəb(ə)l]adj.敏感be more susceptible to hackersa hacker drains Poloniexin actualityintensive[ɪn'tensɪv]adj.加强a security-intensive businessby no means决不by no means pe...
2019-04-11 21:55:13
228
原创 go-ethereum Verify User
package mainimport ( ethereum_crypto "github.com/ethereum/go-ethereum/crypto" "fmt" "crypto/ecdsa" )func main() { privateKey, err := ethereum_crypto.HexToECDSA("47fcf73dd2b80cfb78630bd593bd...
2019-04-08 16:52:10
212
原创 go-ethereum Create Wallet
package mainimport ( ethereum_crypto "github.com/ethereum/go-ethereum/crypto" "fmt" "github.com/ethereum/go-ethereum/common/hexutil" "crypto/ecdsa")func main() { privateKey, err := ethereu...
2019-04-08 16:46:28
425
原创 Golang UDP C/S Communication
Serverpackage mainimport ( "net" "fmt")func main() { sAddr, err := net.ResolveUDPAddr("udp", ":6666") if err != nil { fmt.Print(err) return } server, err := net.ListenUDP("udp", sA...
2019-03-27 21:54:21
399
原创 no such file or directory, scandir '/Users/zmx/190202/node_modules/node-sass/vendor'
npm rebuild node-sass
2019-02-08 15:05:46
570
原创 ipfs CORS config
ipfs config jsonAPI.HTTPHeaders.Access-Control-Allow-Methods '["PUT","GET","POST","OPTIONS"]'ipfs config jsonAPI.HTTPHeaders.Access-Control-Allow-Origin '["*"]'ipfs config jsonAPI.HTTPHeaders.Acces...
2019-02-03 16:24:17
467
原创 npm install:EACCES: permission denied
npm install -g xx --unsafe-perm --allow-root
2019-01-27 14:43:16
619
原创 Hyperledger fabric+kafka+docker-compose多机部署
主机 A B C D IP 139.180.137.89 139.180.209.250 139.180.137.0 198.13.46.60 角色 zookeeper0 kafka0 orderer0.trace.com zookeeper1 kafka1 orderer1.trace.com zo...
2019-01-19 23:25:01
1071
原创 golang ping
package mainimport ( "github.com/sparrc/go-ping" "log" "time" "fmt")func main() { pinger,err:=ping.NewPinger("www.google.com") if err!=nil { log.Fatal(err) return } pinger.Timeout=...
2019-01-17 14:42:16
381
原创 Reflection in golang
package mainimport ( "reflect" "fmt" "190112/pkg")func main() { var reverseInt func([]int) []int BindFunc(&reverseInt,Reverse) fmt.Println(reverseInt([]int{10,20,30})) var reverseSt...
2019-01-15 16:58:30
239
原创 peer0.org1.example.com:7051: failed to create new connection: context deadline exceeded
docker volume prune
2019-01-09 13:59:14
6119
2
原创 A simple example of Dockerfile
FROM ubuntuMAINTAINER TomUSER rootENV BAQI=lijieRUN apt-get updateRUN apt-get install -y nginxADD ["go1.11.linux-amd64.tar.gz","/usr/local/"]COPY ["go1.10.linux-amd64.tar.gz","/Xuli/"]ARG...
2019-01-08 16:31:34
265
原创 [golang]call method with reflection
package mainimport ( "reflect" "fmt")type Ax struct { X int}type By struct { Y int}type Handler struct {}func (h *Handler) Add(ax Ax,bx By) int { return ax.X+bx.Y}func main() ...
2019-01-05 13:00:38
298
原创 Docker容器跨主机通信--overlay
主机配置A 45.77.250.9 CentOS 7 x64B 66.42.55.131 CentOS 7 x641.A、B主机分别安装dockeryum install docker -yA、B主机分别启动dockersystemctl start docker检查docker安装成功docker version2.A主机安装consulw...
2018-12-28 18:16:41
470
1
原创 Singleton in golang
Using sync.Muteximport ( "sync" "sync/atomic")type singleton struct {}var instance *singletonvar mu sync.Mutexvar initialized uint32func GetSingleton() *singleton { if atomic.LoadUint...
2018-12-27 22:37:39
174
原创 Quick sort,bubble sort,insertion sort in golang
Quick Sortpackage mainimport ( "math/rand" "time" "fmt")func QuickSort(x []int,s int,t int) { if s>=t { return } i:=s j:=t k:=x[s] for i<j { for i<j && x[j]<=..
2018-12-27 21:51:54
278
原创 systemctl: command not found on ubuntu 14.04
apt-get install --reinstall systemd
2018-12-26 21:09:24
23444
原创 /usr/bin/docker-current: Error response from daemon: shim error: docker-runc not installed on system
cd /usr/libexec/dockerln -s docker-runc-current docker-runc
2018-12-24 16:45:33
4104
1
原创 no sockets found via socket activation: make sure the service was started by systemd
vi /etc/systemd/system/docker.service.d/env.confExecStart=/usr/bin/dockerd $DOCKER_OPTSJust remove -H fd:// in line ExecStart
2018-12-24 16:33:30
4628
原创 no title
carbon dioxidesulphur dioxidecrop庄稼fertilizer肥料depletion损耗ozone depletionextentunicorn独角兽downfallroyaldrug trafficking非法运输毒品urine urinalexecutivelegislaturejudiciaryautocra...
2018-12-12 16:52:31
242
原创 Remove directory in Node.js
const path=require("path")const fs=require("fs")const rmdirSync=dir => { const fileinfo=fs.statSync(dir) if (fileinfo.isFile()) { fs.unlinkSync(dir) } else if(fileinfo.isDire...
2018-12-08 21:08:57
170
原创 Simple usage of events in Node.js
const events=require("events")const eventEmitter=new events.EventEmitter()eventEmitter.on("eat",() => { console.log("eat") eventEmitter.emit("drink","beer")})eventEmitter.on("drink&
2018-12-08 20:27:44
130
原创 Copy file in Node.js
const fs=require("fs")const reader=fs.createReadStream("/Users/zmx/Downloads/day2-Solidity.pdf")const writer=fs.createWriteStream(Date.now()+".pdf")reader.pipe(writer)/*let total=0let data=""re...
2018-12-08 18:13:40
144
原创 Simple usage of module http in Node.js
Server sideconst http=require("http")const server=http.createServer((req,res) => { if (req.url=="/favicon.ico") { res.end() return } showdir(req,res)})server.liste...
2018-12-08 17:10:21
159
原创 Simple Usage of web3.js
const Web3=require("web3")const web3=new Web3(new Web3.providers.HttpProvider("http://localhost:8545"))console.log(web3.utils.fromWei("12345678901234567890","ether"))console.log(web3.utils.fromWe...
2018-12-07 22:23:52
121
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