awesome datasets

Filename= ' G:\data\iris.csv 'Lines=fr.readlines ()Mat=zeros (Len (lines), 4)Irislabels=[]Index=0For line in lines:Line=line.strip ()If Len (line) >0:Listfromline=line.split (', ')Irislabels.append (Listfromline[-1])Mat[index,:]=listfromline[0:4]Index=index+1mat=mat[0:150,:]ROWCOUNT=MAT.SHAPE[0]horatio=0.2Testnum=int (Horatio*rowcount)Train=mat.copy ()Train=train[testnum:,:]Trainlabel=irislabels[testnum:]def classify1 (inx,train,labels,k):ROWCOUNT=TRAIN.SHAPE[0]Diffmat=tile (InX, (rowcount,1))-t

", "B", "C"});TBLDATAS.ROWS.ADD (new object[] {null, "a", "B", "C"});TBLDATAS.ROWS.ADD (new object[] {null, "a", "B", "C"});TBLDATAS.ROWS.ADD (new object[] {null, "a", "B", "C"});Convert Listpublic static DataTable todatatable{PropertyDescriptorCollection properties = Typedescriptor.getproperties (typeof (T));DataTable dt = new DataTable ();for (int i = 0; i {PropertyDescriptor property = Properties[i];Dt. Columns.Add (property. Name, property. PropertyType);}Object[] values = new object[propert

1. Sorting data in a dataset New DataSet (); // Get Data for the current row ds = _xiaobill. Gethistorydata (Yinzibianm, Zhandian, Begindate, EndDate, dnum); = ds. tables[0]; = dt. Select ("1=1","" ");Datarow[] disguised as a DataTableDataSet dschecklist =_yinzibill.searchjiankongyinzibytype (Zhandian); Datarow[] Dr= dschecklist.tables[0]. Select ("Factor International Code in (' B02 ', ' a ', ' ' in ', ' "') '"); DataTable T= dschecklist.tables[0]

Spark External Datasets Spark can create RDD from any storage source that supports Hadoop, including local file systems, HDFS, Cassandra, Hbase, and Amazon S3. Spark supports textFile, SequenceFiles, and any other Hadoop data in InputFormat. 1. the RDD of textfile can be created through the SparkContext's textFile method. This method requires passing a file path URL as a parameter and then reading the data of each row of the corresponding file, form a

Not much nonsense, just on the way1 Public StaticDataSet ExecuteDataset ( ThisIDbConnection CNN, IDbDataAdapter Adapter,stringSqlObjectparam =NULL,BOOLBuffered =true,int? CommandTimeout =NULL, CommandType? CommandType =NULL)2 {3 varDS =NewDataSet ();4 varCommand =NewCommanddefinition (SQL, (Object) param,NULL, CommandTimeout, CommandType, buffered?CommandFlags.Buffered:CommandFlags.None);5 varIdentity =NewIdentity (Command.commandtext, Command

Gradient descent and random gradient descent:Gradient descent: Each iteration takes a long time, slow processing on large data sets, moderate sensitivity to parametersRandom gradient descent: each iteration takes a short time to process faster on a large data set, but is very sensitive to parametersRandom gradient descent can achieve larger log likelihood values faster, but with greater noiseThe step size is too small, the convergence speed is too slow, the step size is larger, the oscillation i

DataSetFunction: Dataset,dataadapter reads data.Q: What is DataAdapter?A: The DataAdapter object acts as a bridge between the dataset and the dataString strconn= "uid= account; pwd= password; database= database; server= server";//sql Server link stringSqlConnection connsql=new SqlConnection (strconn); Instantiation of the SQL link classConnsql.open ();//Open databaseString Strsql= "select * FROM table name 1"; The SQL statement to executeSqlDataAdapter Da=new SqlDataAdapter (Strsql,connsql); Cre

DataSetRepresents the cache of data in memory.PropertyTables gets the collection of tables contained in the DataSet.Ds. tables["SJXX"]DataTableRepresents a table of in-memory data.Public propertiesColumns gets the collection of columns that belong to the table.The dataset gets the dataset to which this table belongs.DefaultView gets a custom view of a table that might include a filtered view or cursor position.PrimaryKey Gets or sets an array of columns that act as the primary key for the data t

the bottleneck, in the analysis services layer, the MDX response speed is usually within 1000 milliseconds, but it is very costly to render it. Here, I suggest you improve the structure of your multi-dimensional data set, because what is your multi-dimensional data set displayed, therefore, this problem should also be taken into account during the design. Otherwise, I am afraid that all the display controls will be discarded. This is also true in management studio. For better presentation of

Note: a single view page returns multiple model datasets to take notes. Namespace models {public class Articel {public int ID {Get; set;} [required] [displayname ("title")] [maxlength (100)] Public String title {Get; set ;}} public class Cate {public int cateid {Get; Set ;}[ displayname (" Article Category ")] [required] Public String catename {Get; set;} public list

In Delphi, datasets are the most common data access methods. Therefore, the interaction between JSON and tdataset must be established to achieve communication and conversion between data. It is worth noting that this is only a normal conversion between tdataset and JSON. Because CDs contains delta data packets, its data format is far more complex than ordinary tdataset.The dataset field information is a complete dictionary information. Therefore, we m

. parameters. add ("@ birthday", sqldbtype. datetime, 8, "Birthday"); adapter. insertcommand = cmd; // The modified sqlcommand cmd1 = Conn. createcommand (); fig = "Update info set [email protected], [email protected], [email protected], [email protected] Where [email protected]"; fig. A Dd ("@ code", sqldbtype. varchar, 50, "Code"); Parameters 1.parameters. add ("@ name", sqldbtype. varchar, 50, "name"); Parameters 1.parameters. add ("@ sex", sqldbtype. bit, 1, "sex"); Parameters 1.parameters.

example can further illustrate that an int contains 4 bytes, and a byte is a form of \x14. >>> a=20>>> b=400>>> t=struct.pack (' II ', A, b) >>> T ' \x14\x00\x00\x00\x90\x01\x00 \x00 ' >>> len (t) 8>>> type (a) 3, the introduction of the structA=20,b=400struct There are three methods, the Pack (Fmt,val) method is to convert the Val data in the format of FMT to binary data, T=struct.pack (' II ', A, b), convert a, B to binary form ' \x14\x00\ X00\x00\x90\x01\x00\x00 'The Unpack (Fmt,val) method

(filename):"" "Load single batch of Cifar" "with open (filename,' RB ')As F:datadict = P.load (f) X = datadict[' Data '] Y = datadict[' Labels '] X = X.reshape (10000,3,32,y = Np.array (y)Return X, YDefLoad_cifar_labels(filename):with open (filename,' RB ')As F:lines = [xFor XIn F.readlines ()] Print (lines)if __name__ = ="__main__": Load_cifar_labels ("/data/cifar-10-batches-py/batches.meta") imgx, imgy = Load_cifar_batch ("/data/cifar-10-batches-py/data_batch_1")Print Imgx.shapePrint"Saving Pi

Complete project:http://download.csdn.net/detail/hi_dahaihai/9892004This project is to take MFC made an artboard, draw a number can be self-identifying numbers. In addition to save pictures, empty the artboard function, simple and practical.The recognition method calls the trained mnist DataSet "Svm_data.xml" for SVMMnist Data Set training method self Baidu, a lot of.This project is based on OpenCV 2.4.6, the download of friends to modify their own configuration for their own use of the OPENCV v

)score+= (Clf.score (test_x[i*1000: (i+1) *1000,:], test_y[i*1000: (i+1) *1000])/classnum)score_train+= (Temp_train/classnum)Time3 = Time.time ()Print ("score:{:.6f}". Format (Score))Print ("score:{:.6f}". Format (Score_train))Print ("Train data Cost", Time3-time2, "second")Experimental results: The results of different kernel functions and C after two-valued (normalize) were statistically and analyzed. The results are shown in the following table: Parameter Binary Value

Ide:jupyterNow I know the source of the data set two, one is the CSV dataset file and the other is imported from sklearn.datasets1.1 Data set in CSV format (uploaded to Blog park----DataSet. rar)1.2 Data Set Read1 " Flower.csv " 2 Import Pandas as PD 3 df = pd.read_csv (file, header=None)4 df.head (10)1.3 Results2.1 Data sets in Sklearn1 from Import Load_iris # importing DataSet Iris2 iris = Load_iris () # load DataSet 3 iris.data[:10]2.2 Reading resultsPython Build BP Neural network _ Iri

Sort in ascending order by code name (to determine if the code is empty, otherwise it will be an error)Rowitems1.sort (Delegate (RowData x, RowData y){if (string. IsNullOrEmpty (X.code) string. IsNullOrEmpty (Y.code)){return 0;}else if (!string. IsNullOrEmpty (X.code) string. IsNullOrEmpty (Y.code))return 1;else if (string. IsNullOrEmpty (X.code) !string. IsNullOrEmpty (Y.code))return-1;ElseReturn X.code.compareto (Y.code);});Where RowData is a class or struct, code is a property.list

A strongly typed dataset can help us quickly build the data access layer, and its simplicity allows us to use it extensively in small projects. But it also has some minor flaws, and here is a discussion of what the flaws are and how we can avoid them. 1 in a query, it only supports operations on this table and does not support operations on multiple tables. In this case, we can write a stored procedure ourselves and create a new TableAdapter so that it will help us generate a new logical entity

the order NumPy scipy matplotpy scikit-learn: Pip Install Add the WHL directly in (if you have previously installed these packages you need to order Pip Uninstall,ps: I tried direct pip install NumPy, unsuccessful) complete. Open an example of a linear regression try In addition, from Sklearn import datasets in the Py file, there will always be a problem with the title, no solution; but typing in the Python shell does not prompt an error. Anyway do