churn dataset

I have seen many such comments on the Internet,AccessThe performance of Typed Dataset data is higher than that of untyped dataset. I have always been skeptical. After all, both are implemented based on DataSet. The former isCodeDetermine the structure when writing. The latter is determined at runtime. The efficiency of the two operations after instantiation is th

Sometimes we often encounter in the actual classification data mining, the class sample is very uneven, the direct use of this unbalanced data will affect the classification of some models, such as the logistic REGRESSION,SVM, a solution is to balance the data sampling, here provides a recommended code implementation , the input and output data formats are required as label+tab+features, such as LIBSVM formatUsage:Usage: {0} [options] DataSet Subclass

Use the stored procedure to return a dataset, sqlcommand-> sqldataadapter-> Dataset sqlconnection userconnection = connection. getconnection (); sqlcommand usercommand = new sqlcommand ("storepname", userconnection); usercommand. commandtype = commandtype. storedprocedure; // Stored Procedure usercommand. parameters. add ("@ PA", sqldbtype. varchar, 50); // Stored Procedure Parameter usercommand. para

Export dataset to excel and dataset to excel I found a lot of such code on the Internet. If it weren't for Chinese garbled characters, it would be too complicated. This is the best one I have ever used. // Ds is the data source, filename is the saved file name publicvoidCreateExcel (DataSet ds, stringFileName) {// sets the information HttpContext. current. resp

Use some DataSet functions to log on to the website, and use dataset to log on to the website. First, I have to complete registration and store my personal information in the database. Secondly, some objects in this section are stored in some documents and need to reference namespaces. Using System; using System. collections. generic; using System. linq; using System. web; using System. web. UI; using Syste

The dataset is ADO. The central concept of net. Datasets can be treated as an in-memory database, which is a separate collection of data that is not dependent on the database. (from Baidu Encyclopedia)Here's a code to sample the use of the dataset: (The following code is a button's Click event)1 using(SqlConnection conn =NewSqlConnection ("Data source=pc201507182002\\sqlexpress;initial catalog=123456;integr

TypePdepdata=^depdata;Depdata = RecordId:integer;depid:string;depname:string;EndProcedure FreeTV (Tv:ttreeview);VarI:integer;BeginFor I: = 0 to TV. Items.count-1 doBeginDispose (TV. Items[i]. Data);EndTv. Items.clear;EndProcedure Loadtree (Tv:ttreeview; dst:tdataset);function Getnodedata:pdepdata;BeginNew (result);With result^ do beginID: = DST. Fieldbyname (' ID '). Asinteger;Depid: = DST. Fieldbyname (' Depid '). asstring;Depname: = DST. Fieldbyname (' Depname '). asstring;EndEndVarParentNode,

How can we determine whether the number of records in the adoquery dataset is null, that is, whether there is data in the dataset? Delphi/Windows SDK/API Http://www.delphi2007.net/DelphiDB/html/delphi_20061221094018194.html RT Adoquery. open;If adoquery. EOF thenData is empty Adoquery1.open;If adoquery1.isempty then Adoquery1.open;If adoquery1.recordcount Adoquery1.open;If adoquery1.isempty thenP

It's common to know if a dataset is empty, but I'm starting to get a little vague on the concept of DS empty, and I looked at it online, and the results are as follows: The dataset is empty and there are no tables in the dataset.The dataset is empty, or a reference to a dataset type is null, meaning that the reference

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingsystem.web;usingSystem.Web.UI;usingSystem.Web.UI.WebControls;usingSystem.Configuration;usingSystem.Data;usingSystem.Data.SqlClient;namespaceqqisonline{ Public Partial classIndex1:System.Web.UI.Page {protected voidPage_Load (Objectsender, EventArgs e) { if(!IsPostBack) {Gridview1.datasource=Getqqinfo (); Gridview1.databind (); Gridview2.datasource=GetOrderInfo (); Gridview2.databind (); Grid

Dataset DS = new dataset (); Sqldataadapter da = new sqldataadapter (); Int Gg = da. Fill (DS, "TB "); DS = ds_up (DS, GG ); Public dataset ds_up (system. Data. dataset DSS, int GC){Dataset dd = DSS;For (INT I = 0; I {If (DD. Tables ["TB"]. Rows [I] ["membership level"].

Label: recently, there is a need to write some C # programs, useful to dataset datasets and SQLite database, because I have never been good at remembering the syntax of various programming languages, so after reviewing a bunch of data, left the following content memo: First, sqlite operation, direct code, very simple://Create a database file stringDatasource=application.startuppath +"\\test.db"; System.Data.SQLite.SQLiteConnection.CreateFile

Convert DataSet to json, and DataSet to json/// /// Convert dataset data to json format/// /// /// Public static string GetJsonByDataset (DataSet ds){If (ds = null | ds. Tables. Count {// If the queried data is null, mark OK: falseReturn "{\" OK \ ": false }";}StringBuilder sb = new StringBuilder ();Sb. Append ("{\" OK

1 /// Convert a TXT file to a dataset Dataset

/// ///1step: Defining entity Classes/// classPhonenum {intpId; Public intPId {Get{returnPId;} Set{pId =value;} } intPtypeid; Public intPtypeid {Get{returnPtypeid;} Set{Ptypeid =value;} } stringPName; Public stringPName {Get{returnPName;} Set{PName =value;} } stringPcellphone; Public stringPcellphone {Get{returnPcellphone;} Set{Pcellphone =value;} } stringPhomephone; Public stringPhomephone {Get{returnPhomephone;} Set{Phomephone =value;} } } ///

Step 1: Add enginegeodb license Initialization Iaoinitialize aoinitialize = new aoinitialize (); aoinitialize. initialize (esrilicenseproductcode. esrilicenseproductcodeenginegeodb ); If this parameter is not added, the following error occurs: "The application is not licensed to create or modify schema for this type of data" Step 2: connect to the SDE Database VaR factorytype = type. gettypefromprogid ("esrisponcesgdb. sdeworkspacefactory "); var workspacefactory = (sdeworkspacefact

The code is as follows copy code //Multiple table Multiline multiple columns foreach (datatabledtinyourdataset.tables) //traversal of all DataTable { foreach (Datarowdrindt. rows) ///traverses all rows of foreach (DATACOLUMNNBSP;DCNBSP;INNBSP;DT). Columns) //traverse all Columns Console.WriteLine ("{0},{1},{2}", dt.) TABLENAME,NBSP DC. COLUMNNAME,NBSP;DR[DC]); //table name, column name, cell data } //traverse a table Multiline multiple columns foreach (da

Theservice (the "No-churn" class ) and a small minority cancel their subscription (the "Churn" class).When there are amodest class imbalance like 4:1 in the example above it can cause problems.Accuracy ParadoxThe accuracy paradox is thename for the exact situation of the introduction to this post.It's the Casewhere your accuracy measures tell the story so you had excellent accuracy (such as 90%), but the a

Chapter 6 What is a datasetDelphi 4 has four types of Standard dataset components: tTable, tquery, tstoredproc, and tclientdataset. These dataset components are inherited from a common basic class tdataset, where only tclientdataset is inherited directly from tdataset, while tTable, tquery, and tstoredproc are directly inherited by tdbdataset, the upper level of tdbdataset is tbdedataset, and that of tbdeda

Basic concepts The official document in TensorFlow describes the dataset data object in this way: A dataset can be used to represent a collection of input pipeline elements (a nested structure of tensor) and a "logical plan" for translating these elements into action. In a dataset, an element can be a vector, tuple, or dictionary form.In addition, the