precision主题的文章列表，还有precision的技术要点_第1页

ORA-30352: inconsistent numeric precision or string length

文档解释ORA-30352:inconsistentnumericprecisionorstringlengthCause:TheSELECTexpressionwasofadifferentnumericprecisionorstringlengththanthecorrespondingcontainercolum...

IT技术学习·2023-07-18

ORA-30088: datetime/interval precision is out of range

文档解释ORA-30088:datetime/intervalprecisionisoutofrangeCause:Thespecifieddatetime/intervalprecisionwasnotbetween0and9.Action:Useavaluebetween0and9fordatetime/inter...

IT技术学习·2023-07-17

ORA-30082: datetime/interval column to be modified must be empty to decrease fractional second or leading field precision

文档解释ORA-30082:datetime/intervalcolumntobemodifiedmustbeemptytodecreasefractionalsecondorleadingfieldprecisionCause:datetime/intervalcolumnwithexistingdataisbein...

IT技术学习·2023-07-10

ORA-01724: floating point precision is out of range (1 to 126)

文档解释ORA-01724:floatingpointprecisionisoutofrange(1to126)Cause:Thespecifiednumberhadaninvalidrange.Action:Useafloatingpointprecisionthatisinthecorrectprecision.O...

IT技术学习·2023-07-10

ORA-01873: the leading precision of the interval is too small

文档解释ORA-01873:theleadingprecisionoftheintervalistoosmallCause:Theleadingprecisionoftheintervalistoosmalltostorethespecifiedinterval.Action:Increasetheleadingpre...

IT技术学习·2023-07-09

ORA-01868: the leading precision of the interval is too small

文档解释ORA-01868:theleadingprecisionoftheintervalistoosmallCause:Theleadingprecisionoftheintervalistoosmalltostorethespecifiedinterval.Action:Increasetheleadingpre...

IT技术学习·2023-07-08

ORA-01898: too many precision specifiers

文档解释ORA-01898:toomanyprecisionspecifiersCause:Whiletryingtotruncateorrounddates,extradatawasfoundinthedateformatpictureAction:Checkthesyntaxofthedateformatpictu...

IT技术学习·2023-07-06

SqlBulkCopy Precision Error from C# Double to Sql Decimal?

https://forums.asp.net/t/1300113.aspx?SqlBulkCopy+Precision+Error+from+C+Double+to+Sql+Decimal+BeforeIbulkcopydataintothedatabase,IuseDataTabletostorethebulkofd...

代码星球·2021-02-08

机器学习常见的几种评价指标：精确率（Precision）、召回率（Recall）、F值（F-measure）、ROC曲线、AUC、准确率（Accuracy）

原文链接：https://blog.csdn.net/weixin_42518879/article/details/83959319主要内容：机器学习中常见的几种评价指标，它们各自的含义和计算（注意本文针对二元分类器！）1、混淆矩阵TruePositive（真正，TP）：将正类预测为正类的数目TrueNegative...

代码星球·2020-08-09

C++ 流控制函数setw()、setfill()、setbase()、setprecision()的使用

头文件：#include<iostream>#include<iomanip>功能：std::setw：需要填充多少个字符,默认填充的字符为''空格std::setfill：设置std::setw将填充什么样的字符，如:std::setfill('*')std::setbase(n)：将输出数据...

代码星球·2020-04-15

机器学习算法中的准确率(Precision)、召回率(Recall)、F值(F-Measure)

摘要：　　数据挖掘、机器学习和推荐系统中的评测指标—准确率(Precision)、召回率(Recall)、F值(F-Measure)简介。引言：　　在机器学习、数据挖掘、推荐系统完成建模之后，需要对模型的效果做评价。业内目前常常采用的评价指标有准确率(Precision)、召回率(Recall)、F值(F-...

代码星球·2020-04-14

准确率(Accuracy), 精确率(Precision), 召回率(Recall)和F1-Measure

yuCode15Comments 机器学习(ML),自然语言处理(NLP),信息检索(IR)等领域,评估(Evaluation)是一个必要的工作,而其评价指标往往有如下几点:准确率(Accuracy),精确率(Precision),召回率(Recall)和F1-Measure。(注：相对来说，IR的groun...

代码星球·2020-04-11