λ³Έλ¬Έ λ°”λ‘œκ°€κΈ°
μΉ΄ν…Œκ³ λ¦¬ μ—†μŒ

[pytorch zero to all κ°•μ˜ λ‚΄μš© 정리] 2κ°• Linear Model - μ„ ν˜• λͺ¨λΈ

by hyerong 2024. 1. 7.

 

μΊ‘μŠ€ν†€ μ£Όμ œκ°€ LLM을 μ΄μš©ν•œ 검색 엔진 μ œμž‘μœΌλ‘œ μ’ν˜€μ§€λ©΄μ„œ νŒŒμ΄ν† μΉ˜ μŠ€ν„°λ””λ₯Ό κ²¨μšΈλ°©ν•™λ™μ•ˆ μ‹œμž‘ν–ˆμŠ΅λ‹ˆλ‹€. 

κ΅μˆ˜λ‹˜κ»˜μ„œ κ³΅μœ ν•΄μ£Όμ‹  pytorch zero to all κ°•μ˜λ₯Ό μˆ˜κ°•ν•˜λ©΄μ„œ μ •λ¦¬ν•œ λ‚΄μš©μ„ κ³΅μœ ν•˜κ³ μž ν•©λ‹ˆλ‹€. 

μˆ˜ν•™μ μΈ λ‚΄μš©κ³Ό 원리에 λŒ€ν•΄μ„œλŠ” κ°„λ‹¨νžˆ μ •λ¦¬ν•˜κ³  κ°•μ˜μ˜ μˆ²μ„ λ³΄λŠ” μ£Όμ œμœ„μ£Όλ‘œ μ •λ¦¬ν•œ λΆ€λΆ„μ΄λ‹ˆ μ €μ²˜λŸΌ νŒŒμ΄ν† μΉ˜μ— μ œλ‘œλ² μ΄μŠ€μ˜€λ˜ λΆ„λ“€κ»˜μ„œλŠ” ν•œλ²ˆ 읽고 νŒŒμ΄ν† μΉ˜ μŠ€ν„°λ””λ₯Ό μ‹œμž‘ν•˜μ‹œλŠ”κ²Œ 도움이 될 것 κ°™μŠ΅λ‹ˆλ‹€. 

13κ°•κΉŒμ§€ λ‚΄μš©μ„ μ „λΆ€ 올리고 이후 좔가적인 μŠ€ν„°λ””λ₯Ό μ§„ν–‰ν• λ•Œλ§ˆλ‹€ μ‹œκ°„μ„ λ‚΄μ–΄ 곡뢀 λ‚΄μš©μ„ μ •λ¦¬ν•˜κ³ μž ν•©λ‹ˆλ‹€. 


κ°•μ˜ λͺ©ν‘œ : νŒŒμ΄ν† μΉ˜μ˜ μ„ ν˜• λͺ¨λΈ κ°œλ…μ„ μ΄μ•ΌκΈ°ν•˜κ³  지도 λ¨Έμ‹ λŸ¬λ‹μ—μ„œ μ„ ν˜• λͺ¨λΈμ΄ μ‚¬μš©λ˜λŠ” 방법과 λͺ¨λΈν•™μŠ΅ 및 평가 과정을 μ„€λͺ…ν•œλ‹€. 
λ˜ν•œ 손싀 계산과 ν‰κ· μ œκ³±μ˜€μ°¨(MSE)λ₯Ό μ‚¬μš©ν•˜μ—¬ 손싀을 μ΅œμ†Œν™” ν•΄λ³Έλ‹€. 
λ˜ν•œ νŒŒμ΄μ¬μ—μ„œ μ„ ν˜• λͺ¨λΈμ„ κ΅¬ν˜„ν•˜λŠ” μ˜ˆμ‹œλ₯Ό 보며 λͺ¨λΈμ˜ μžλ™ μ΅œμ ν™”λ₯Ό μœ„ν•œ 경사 ν•˜κ°•κ°œλ…μ„ μ†Œκ°œν•œλ‹€. 
- [1] πŸ” Linear models are commonly used in machine learning for predicting outputs based on inputs. They are particularly useful when there is a linear relationship between the variables.
- [2] βž— The loss function, specifically mean square error (MSE), is used to measure the difference between the predicted outputs and the actual outputs. The goal is to minimize this loss to improve the accuracy of the model.
- [3] πŸ“ˆ Gradient descent is an optimization algorithm that iteratively adjusts the weights of the model to minimize the loss. It helps in automatically finding the best weight values that minimize the MSE.
- [4] 🐍 Python provides a simple and efficient way to implement linear models and compute the loss. By defining the model as a function and using basic mathematical operations, the model can be easily programmed.
- [5] πŸ“‰ Graphical visualization of the loss function helps in understanding the relationship between weight values and the corresponding loss. This visualization can guide the optimization process and identify the best weight value.
- [6] πŸ”„ The process of finding the best weight value is crucial for machine learning models, especially when there are multiple parameters. Gradient descent offers an automated way to optimize the model and minimize the loss.
- [7] πŸ“š Exercises and hands-on experience are essential for gaining a deeper understanding of linear models, loss calculation, and optimization techniques. Practicing with different datasets and computing the cost graph can enhance learning and problem-solving skills.

- [1] πŸ” μ„ ν˜• λͺ¨λΈμ€ μž…λ ₯을 기반으둜 좜λ ₯을 μ˜ˆμΈ‘ν•˜κΈ° μœ„ν•΄ 기계 ν•™μŠ΅μ—μ„œ 일반적으둜 μ‚¬μš©λœλ‹€. λ³€μˆ˜ 사이에 μ„ ν˜• 관계가 μžˆμ„λ•Œ νŠΉνžˆλ‚˜ μœ μš©ν•˜λ‹€. 

- [2] βž—μ†μ‹€ ν•¨μˆ˜, 특히 평균 제곱 였차(MSE)λŠ” 예츑 좜λ ₯κ³Ό μ‹€μ œ 좜 κ°„μ˜ 차이λ₯Ό μΈ‘μ •ν•˜λŠ”λ° μ‚¬μš©λœλ‹€. λͺ©ν‘œλŠ” μ΄λŸ¬ν•œ 손싀을 μ΅œμ†Œν™”ν•˜μ—¬ λͺ¨λΈμ˜ 정확도λ₯Ό λ†’μ΄λŠ” 것이닀. 

- [3] πŸ“ˆ gradient descent-경사 ν•˜κ°•λ²•μ€ 손싀을 μ΅œμ†Œν™”ν•˜κΈ° μœ„ν•΄ λͺ¨λΈμ˜ κ°€μ€‘μΉ˜λ₯Ό 반볡적으둜 μ‘°μ •ν•˜λŠ” μ΅œμ ν™” μ•Œκ³ λ¦¬μ¦˜μ΄λ‹€. μ΄λŠ” MSEλ₯Ό μ΅œμ†Œν™”ν•˜λŠ” μ΅œμƒμ˜ μ€‘λŸ‰κ°’μ„ μžλ™μœΌλ‘œ μ°ΎλŠ”λ° 도움이 λœλ‹€. 

- [4] 🐍 νŒŒμ΄μ¬μ€ μ„ ν˜• λͺ¨λΈμ„ κ΅¬ν˜„ν•˜κ³  손싀을 κ³„μ‚°ν•˜λŠ” κ°„λ‹¨ν•˜κ³  효율적인 방법을 μ œκ³΅ν•œλ‹€. λͺ¨λΈμ„ ν•¨μˆ˜λ‘œ μ •μ˜ν•˜κ³  기본적인 μˆ˜ν•™μ  연산을 μ‚¬μš©ν•˜λ©΄ λͺ¨λΈμ„ μ‰½κ²Œ ν”„λ‘œκ·Έλž˜λ° ν•  수 μžˆλ‹€. 

- [5] πŸ“‰ 손싀 ν•¨μˆ˜μ˜ κ·Έλž˜ν”½ μ‹œκ°ν™”λŠ” κ°€μ€‘μΉ˜ κ°’κ³Ό ν•΄λ‹Ή 손싀 κ°„μ˜ 관계λ₯Ό μ΄ν•΄ν•˜λŠ”λ° 도움이 λœλ‹€. 이 μ‹œκ°ν™”λŠ” μ΅œμ ν™” ν”„λ‘œμ„ΈμŠ€λ₯Ό μ•ˆλ‚΄ν•˜κ³  μ΅œμƒμ˜ κ°€μ€‘μΉ˜ 값을 식별할 수 μžˆλ‹€. 

- [6] πŸ”„ 졜적의 κ°€μ€‘μΉ˜ 값을 μ°ΎλŠ” ν”„λ‘œμ„ΈμŠ€λŠ” 특히 μ—¬λŸ¬ λ§€κ°œλ³€μˆ˜κ°€ μžˆλŠ” 경우 기계 ν•™μŠ΅ λͺ¨λΈμ— 맀우 μ€‘μš”ν•˜λ‹€. 
κ²½μ‚¬ν•˜κ°•λ²•μ€ λͺ¨λΈμ„ μ΅œμ ν™”ν•˜κ³  손싀을 μ΅œμ†Œν™”ν•˜λŠ” μžλ™ν™”λœ 방법을 μ œκ³΅ν•œλ‹€. 


- [7] πŸ“š μ„ ν˜• λͺ¨λΈ, 손싀 계산 및 μ΅œμ ν™” κΈ°μˆ μ„ 더 깊이 μ΄ν•΄ν•˜λ €λ©΄ μ—°μŠ΅κ³Ό μ‹€μŠ΅ κ²½ν—˜μ΄ ν•„μˆ˜μ . λ‹€μ–‘ν•œ λ°μ΄ν„°μ…‹μœΌλ‘œ μ—°μŠ΅ν•˜κ³  λΉ„μš© κ·Έλž˜ν”„λ₯Ό κ³„μ‚°ν•˜λ©° ν•™μŠ΅ 및 문제 ν•΄κ²° κΈ°μˆ μ„ ν–₯μƒμ‹œν‚¬ 수 있음. 

https://youtu.be/l-Fe9Ekxxj4?feature=shared