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title: Voice assistants and recommendations — a lesson of Mova's school · trees and pragmatics
description: «Voice assistants and recommendations», a lesson of the ai course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: A voice assistant does two guesses in a row: first it turns the sounds it hears into words, then it guesses what you wanted those words to
---

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# Voice assistants and recommendations

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Lesson 17 of the ai course of Mova's primary school: 16 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/ai/17-voice-assistants-recommendations/).

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- [0](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/0/) — A voice assistant does two guesses in a row: first it turns the sounds it hears into words, then it guesses what you wanted those words to mean.
- [1](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/1/) — When Grandma asks for "Dancing Queen" and gets a podcast about queens, one of those guesses slipped, just as a friend on a crackly phone line might mishear you.
- [2](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/2/) — Video sites and games guess too: they watch what you click and how long you stay, then show more of the same, so one cat video can turn your whole page into cats.
- [3](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/3/) — The same pattern-spotting helps unlock phones with faces, warn drivers who drift, help doctors read X-rays and help scientists work out the shapes of proteins.
- [4](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/4/) — In every case it is a strong guess, not a certainty, so people still check, decide and stay in charge.
- [5](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/5/) — Voice assistants turn sounds into words and then guess what you meant; accents and background noise can confuse them.
- [6](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/6/) — For simple jobs with live data, such as timers and weather, voice assistants are usually useful.
- [7](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/7/) — Recommendation systems learn from what you click and watch, and show you more of it; searching for new things on purpose widens what you see.
- [8](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/8/) — Recommendations may push videos that keep people watching, including angry or scary ones.
- [9](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/9/) — Some games use data about players to keep them playing longer, for example with well-timed rewards; deciding your stopping time before you start helps you stay in charge.
- [10](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/10/) — Face recognition looks for patterns in faces, so very similar faces, such as identical twins, can sometimes fool it; adding a PIN makes a phone safer.
- [11](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/11/) — Some cities test cars that drive themselves using cameras, sensors and AI; accidents have been reported and people argue about how safe they are.
- [12](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/12/) — Many cars have helper systems, such as a beep when the car drifts out of its lane, but the driver is always responsible.
- [13](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/13/) — AI can help doctors spot patterns in scans such as X-rays; doctors still check and decide.
- [14](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/14/) — It was widely reported that scientists used AI to predict the shapes of proteins (tiny building parts inside every living thing), a breakthrough that helps research into medicines.
- [15](https://md.mova.elamur.ai/free/en/corpora/school/ai/17-voice-assistants-recommendations/15/) — Map apps guess traffic from data sent by many phones and can suggest a faster route.

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