Foundations homework

About

This repository contains exercises for the “Lede 12” summer program at Columbia University.

Summary

Foundations

1. Python dictionaries, US presidents
2. Dictionaries, 2 (movies)
3. List of dictionaries, loops
4. Programmer, ...
5. NYT and Spotify APIs
6. Forecast API
7. Pandas: Cats & dogs, Millionaires, Train stations; df['column'].value_counts(), df['column'].idxmax(), df.groupby()
8. Pandas, my own data sets; df[df['Station'].str.match('^A')]
9. Python (≠Jupyter), Quakebot; def, getPOSIX()
10. “Scraping and Saving” (Scraper.py, Mailer.py, crontab -e)
11. Parking violations (985 MB CSV)
12. (No exercise)
13. Date index: resample, df.groupby
14. Term Frequency-Inverse Document Frequency!

Data & databases

1. (Short paper)
2. Queries through pg8000
3. Basic Scraping
4. List slices, [sqrt(i) for i in numbers if i < 100], parse menu using regexp
5. Insert with pg8000: cat-cafes
6. Web Application using Flask (lakes)
7. (Twitter bot - sent via email)

Algorithms

Submission: link

1. Mean, Mayoral excuses, prime numbers link
2. [No homework]
3. Sorting, search link
4. Statistical analysis (mode, quantile, IQR), correlation link
5. Slope, Intercept; Correlation; FiveThirtyEight article about Obama
6. No homework
7. Tree classifier (breast cancer set)
8. Group work, no homework; made these slides about decision trees (with node numbers)
9. Write 5-fold classification function; RandomForestClassifier; Group work about the iris dataset link
10. Classification: newsgroups (class: about Naive Bayes)
11. Class: clustering
12. Class: face recognition, Google BigQuery

Interesting facts

Good kinds of pancakes:

• Okonomiyaki

• • Dorayaki
• • Silver dollars
• • Injera

• Some other test

• We are doing some stuff right here

• We are doing some other stuff