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Merge pull request #37 from raubreywhite/patch-1
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Update time01.Rmd
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jarvisc1 authored Dec 12, 2024
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**Thank you for your service** *to your community in these busy times for public health. We are glad that you are taking the time to learn R with us.*

- Brief introductions from the instructors
- Brief round of introductions from the participants
- From the participants, please write in the chat:
- Your name
- Your previous R experience
- A quick summary of your day-to-day job

---

# Time series

- A set of observations arranged in chronological order
- Performed in many fields, many applications
- We will be focusing on "anomaly detection"
- We will be focusing on "anomaly detection" (also known as "aberration analysis")
- Used in near real-time surveillance to identify unexpected patterns in data
- Allows for informed decision-making and outbreak detection

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**Maybe** improve by removing the window and explicitly modeling seasonality
- Good if you get a good model fit
- Bad if you get a bad model fit
- **Lunar new year is a good example**: **Easter**
- Explicit modeling is useful when events aren't in the same week each year (e.g. Easter)
- Remember that you must **always** have **baseline data** that comes **before** the **observation**
- Need to **rerun** the entire model for **every week**, shifting the baseline data window
]
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**As you go along, please remember to type into the chat if you have any questions.**

**You can also raise your hand if you'd like a 1-on-1 chat in a breakout room**




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