正半定矩陣的意思、翻譯和例句

是什麼意思

「正半定矩陣」是線性代數中的一個概念,指的是一種特定類型的矩陣。這種矩陣的特徵是對於所有非零向量 x,滿足 x^T A x ≥ 0,其中 A 是正半定矩陣,x^T 是 x 的轉置。正半定矩陣在許多數學和工程應用中都非常重要,特別是在優化問題和統計學中。這類矩陣的主要特徵包括:所有特徵值均為非負,且其行列式非負。

依照不同程度的英文解釋

  1. A matrix that is not negative.
  2. A matrix that has non-negative values.
  3. A matrix that always gives a positive result when used in a specific calculation.
  4. A matrix that has certain properties related to its values being non-negative.
  5. A matrix that ensures non-negative results for quadratic forms.
  6. A matrix that is used in various mathematical applications and has specific properties.
  7. A matrix that is crucial in optimization problems and has non-negative eigenvalues.
  8. A matrix characterized by non-negative eigenvalues and certain mathematical properties.
  9. A matrix that is positive semi-definite, meaning it does not produce negative values in quadratic forms.
  10. A matrix that is essential in many mathematical contexts, particularly in optimization, and has specific non-negative properties.

相關英文單字或片語的差別與用法

1:Positive Semi-Definite Matrix

用法:

這是正半定矩陣的完整英文翻譯,通常在數學和統計學中使用。它是一種具有特定性質的矩陣,特別是在優化問題中。正半定矩陣的特性使得它在許多應用中非常重要,例如在機器學習和數據分析中。

例句及翻譯:

例句 1:

這個優化問題的解需要一個正半定矩陣

The solution to this optimization problem requires a positive semi-definite matrix.

例句 2:

在計算協方差時,我們通常使用正半定矩陣

We often use a positive semi-definite matrix when calculating covariance.

例句 3:

正半定矩陣在機器學習中扮演重要角色。

Positive semi-definite matrices play an important role in machine learning.

2:PSD Matrix

用法:

這是正半定矩陣的縮寫,常用於數學和工程領域。它的簡稱在學術文獻和技術報告中經常出現。PSD 矩陣的特性使其在許多應用中非常有用,尤其是在最小化問題中。

例句及翻譯:

例句 1:

我們需要檢查這個矩陣是否為 PSD 矩陣。

We need to check if this matrix is a PSD matrix.

例句 2:

在信號處理中,PSD 矩陣被用來分析數據的結構。

In signal processing, PSD matrices are used to analyze the structure of data.

例句 3:

這個算法依賴於使用 PSD 矩陣來確保穩定性。

This algorithm relies on using PSD matrices to ensure stability.