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Maths | ROC Curves

Maths | ROC Curves

ROC curve 在訊號檢測理論中,接收者操作特徵曲線,或者叫 ROC 曲線(Receiver operating characteristic curve),是一種坐標圖式的分析工具, 用於選擇最佳的訊號偵測模型 、 捨棄次佳的模型 或者 在同一模型中設置最佳閾值。 在做決策時,ROC分析能不受成本/效益的影響,給出客觀中立的建議。 ROC曲線 (Receiver operating ch
2024-12-10
Maths
#NWP #ML #AI
MPAS | Smagorinsky turbulence model | Eddy viscosity

MPAS | Smagorinsky turbulence model | Eddy viscosity

Large eddy simulation (LES) Large eddy simulation (LES) is a mathematical model for turbulence used in computational fluid dynamics. It was initially proposed in 1963 by Joseph Smagorinsky to simulate
2024-12-10
MPAS
#WRF #NWP #MPAS #HPC
WRF | MPAS | MPI | halo/ghost cell

WRF | MPAS | MPI | halo/ghost cell

Message Passing Interface (MPI) 訊息傳遞介面(Message Passing Interface,縮寫MPI)是一個平行計算的應用程式介面(API),常在超級電腦、電腦叢集等非共用主記憶體環境程式設計。 The message passing interface effort began in the summer of 1991 when a small grou
2024-12-07
WRF
#WRF #NWP #MPAS #HPC #MPI #halo cell #ghost cell
MPAS | MPAS-A Idealized Test Cases

MPAS | MPAS-A Idealized Test Cases

MPAS-Atmosphere idealized test cases https://mpas-dev.github.io/atmosphere/test_cases.html The downloads below for MPAS-Atmosphere idealized test cases include the following:
2024-12-06
MPAS
#WRF #NWP #MPAS #HPC
CFD | OpenFOAM | STL file | 網格生成

CFD | OpenFOAM | STL file | 網格生成

OpenFOAM三維網格生成器 snappyHexMesh(SHM)是OpenFOAM軟體的三維結構化網格生成模組,功能比較強大,設定靈活,表面處理貼合功能非常強健並且可以並行運算。 SHM能夠透過使用者自訂參數(如細化參數castellatedMeshControls、切合參數snapControls等)對預先載入的幾何體檔案(通常為'.stl'檔案)自動實現三維網格生成、加密(castella
2024-12-05
CFD
#HPC #OpenFOAM
Maths | p-value | Statistical Significance

Maths | p-value | Statistical Significance

p-value In null-hypothesis significance testing, the p-value is the probability of obtaining test results at least as extreme as the result actually observed, under the assumption that the null hypoth
2024-12-05
Maths
#NWP #ML #AI
CFD | OpenFOAM | In parallel

CFD | OpenFOAM | In parallel

Running applications in parallel Both domain decomposition and reconstruction processes can only be done on a single core. This section describes how to run OpenFOAM in paralle
2024-12-04
CFD
#HPC #OpenFOAM
CFD | OpenFOAM | Notes/Blogs

CFD | OpenFOAM | Notes/Blogs

Notes/Blogs 筆記/部落格列表 CFD study and method development for air intake systems using OpenFOAM 2020 | GIOVANNI CALZOLARI KTH ROYAL INSTITUTE OF TECHNOLOGY SCHOOL OF ENGINEERING SCIENCES Urban Wind Flo
2024-12-04
CFD
#HPC #OpenFOAM
Bash | Measure the execution time

Bash | Measure the execution time

Measure the execution time time The time that you are using is the bash shell built in time which the only option is -p The command "time" report a execution time information 123456time sleep 1Output:
2024-12-04
Bash
#Linux #Bash
LaTex | Formula Recognition | 數學公式識別軟體

LaTex | Formula Recognition | 數學公式識別軟體

數學公式識別軟體 SimpleTex 當需要編輯大量數學公式時,如果有一款軟體能夠識別公式圖片自動產生 Latex/Word 公式,這將極大的減少我們的工作量。 最近在網路上找到SimpleTex這款軟體,支援自動辨識圖片公式、手寫板公式辨識功能,試用一段時間感覺還可以。 專案網址:https://simpletex.cn/ SimpleTex 目前提供 Win 和 Mac 平台軟體安裝版,也提供
2024-12-04
LaTex
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