algorithm
algorithm — 名詞
1. an ordered list of steps, written for a computer or person, that always reaches
演算法
解決問題的逐步運算規則
an ordered list of steps, written for a computer or person, that always reaches a correct answer to a clearly defined problem — for example, sorting a list of names or finding the shortest route on a map.
Nikolai wrote a simple algorithm to sort his music files by year.
Nikolai 寫了一個簡單的演算法，把他的音樂檔案依年份排序。
algorithm to + verb pattern
The textbook explains an algorithm for finding the largest number in a list.
課本說明了一種找出清單中最大數字的演算法。
algorithm for + noun pattern
Ancient mathematicians used a step-by-step algorithm to find the greatest common divisor of two numbers.
古代數學家用一套逐步的演算法，求出兩個數字的最大公因數。
Self-driving cars rely on complex algorithms to read traffic signs and avoid pedestrians.
自駕車仰賴複雜的演算法來辨識交通號誌、避開行人。
Professor Lin asked the students to write the algorithm in plain English before coding it in Python.
林教授要學生先用白話寫出演算法，再用 Python 寫成程式。
文法句型
algorithm for + noun
algorithm to + verb
用法筆記
Subject is usually a person, program, or machine that follows the steps. Frequently appears with verbs like write, design, run, implement. Distinguish from sense 2: this sense names a general computational method; sense 2 names the specific ranking system inside a website or app.
常見錯誤
2. the hidden ranking system that an app, social platform, or news site uses to cho
推薦演算法
決定使用者看到哪些內容的排序系統
the hidden ranking system that an app, social platform, or news site uses to choose which posts, videos, or products each user will see, often based on what the user has clicked or watched before.
After Kenji watched one cooking video, the algorithm filled his feed with recipe clips for a week.
Kenji 才看了一支料理影片，推薦演算法就把他的動態塞滿食譜短片，連續一週都是。
the algorithm + verb (decides what to show)
Many small creators say the new algorithm hides their videos from regular viewers.
許多小型創作者說新版的推薦演算法把他們的影片藏起來，一般觀眾看不到。
collocation: the new algorithm
Amara blamed the algorithm for showing her the same five sellers every time she opened the app.
Amara 怪推送機制每次打開 App，推給她的都是同樣那五個賣家。
The dating app changed its algorithm last month and Greta now sees very different profiles.
那個交友 App 上個月調整了推薦演算法，Greta 現在看到的對象完全不一樣。
Newsroom editors worry that the platform's algorithm pushes angry headlines over careful reporting.
新聞編輯擔心，平台的推送機制把激動的標題推到前面，認真的報導反而被壓下去。
- feed
the visible result of the algorithm, not the system itself
- recommendation system
the formal technical term; less common in casual speech
文法句型
the algorithm decides/picks/shows
be tweaked/changed/updated
用法筆記
Almost always preceded by 'the' and treated as a singular agent that 'decides' or 'shows' things — a personification not used in sense 1. Common in everyday talk about TikTok, Instagram, YouTube, Spotify, and online shopping.