Christopher Ivan ctivanovich

I'm a graduate of the U of Chicago, and started my journey into coding and data science several years ago. Each day has brought new learning and excitement!

6 followers · 6 following

View GitHub Profile

Recently created

Least recently created

Recently updated

Least recently updated

ctivanovich / scrape_wunderground_weather.py

Last active May 6, 2019 08:53

A weather data scraper I made for Wunderground.com, using XPaths and dealing with asynchronously loading page elements.

	import bs4
	import datetime
	import os
	import pandas as pd
	import psycopg2

	from selenium import webdriver
	from selenium.webdriver.support.ui import WebDriverWait
	from selenium.webdriver.support import expected_conditions as EC
	from selenium.webdriver.common.by import By

ctivanovich / making_views.sql

Last active May 6, 2019 08:42

Complex Postgresql query using window functions and cases, building views and materialized views

	CREATE OR REPLACE VIEW public.centiles_by_small_region
	AS SELECT s2.small_pid,
	s2.p_region,
	percentile_cont(0.30::double precision) WITHIN GROUP (ORDER BY (mode_prices.mode_price::double precision)) AS percentile_30,
	percentile_cont(0.60::double precision) WITHIN GROUP (ORDER BY (mode_prices.mode_price::double precision)) AS percentile_60,
	percentile_cont(0.90::double precision) WITHIN GROUP (ORDER BY (mode_prices.mode_price::double precision)) AS percentile_90
	FROM mode_prices
	JOIN ( SELECT product_id_sml_class.product_id,
	product_id_sml_class.small_pid,
	CASE

ctivanovich / Enron_Fraud.ipynb

Last active April 4, 2018 08:50

Machine Learning to identify suspects by financial data for Enron employees

Sorry, something went wrong. Reload?

Sorry, we cannot display this file.

Sorry, this file is invalid so it cannot be displayed.

ctivanovich / ML on cryptocurrency trading.ipynb

Last active May 9, 2018 01:14

Predictive modeling of trading data from a cryptocurrency platform

Sorry, something went wrong. Reload?

Sorry, we cannot display this file.

Sorry, this file is invalid so it cannot be displayed.

ctivanovich / index.html

Last active March 23, 2018 10:13

A D3/Dimple Line Chart with a tsv source

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<script src="http://d3js.org/d3.v3.min.js"></script>
	<script src="http://dimplejs.org/dist/dimple.v2.0.0.min.js"></script>

	<style>
	circle.dimple-series-1 {
	fill: red;

ctivanovich / date_from_text_preprocessing.py

Last active February 20, 2018 08:07

	def preprocessing(doc):
	'''Doc is assumed to be an open file object of English-language text.
	Function outputs a dictionary with keys as line numbers from the document,
	values as lists containing likely date-element candidates.
	Years are assumed to be between 1900-2018 inclusive, but this can be easily changed.'''

	import re

	maybedatestuff = {i:[] for i in range(len(doc))}
	for i, line in enumerate(doc):