covid-19 test
Wellness

Are There 6 Types of Coronavirus 2023? What New Research Has to Say

Symptoms have been broken down into six categories.

friends with masks
Wellness

Face Masks In the Summer: How to Stay Cool & Safe In the Heat

Now's not the time to stop wearing your mask.

1 of 3

What’sOn TViPhone - Apple (中国大陆):折抵你现有的 iPhone,换购 iPhone 11 仅 RMB 167/月起,或换购 iPhone 11 Pro 仅 RMB 273/月起。在线操作或店内办理均可。立即到 apple.com.cn 购买。

飞鱼app加速器

Edit Your Location

Be on The Show

1 of 1
  • Did You Make a Lifesaving 911 Call?
  • Do You Depend On Facebook To Keep Up With Friends?
  • Do You Need Help For Your Mood Swings?
  • Do You Want to Meet Dr. Oz and Be on the Show?
  • Do You Have Low Self-Esteem?
  • Did the Dr. Oz Show Save Your Life?
Watch Dr. Oz's YouTube Channel
  • Get Your COVID-19 Questions Answered
  • Watch Exclusive Videos
Dr. Oz
Watch Dr. Oz's YouTube Channel
  • 吴恩达机器学习笔记40-用调和平均数F来进行查准率和 ...:2021-3-6 · 在很多应用中,我伊希望能够保证查准率和查全率的相对平衡。我伊可伍将不同阀值情况下,查全率与查准率的关系绘制成图表,曲线的形状根据数据的不同而不同:我伊希望有一个帮助我伊选择这个阀值的方法。一种方法是计算F1值(F1Score),其计算公式为:我伊选择使得F1值最高的阀值。
  • Watch Exclusive Videos