Sentiment Analysis

Regular Expressions

Minimum Edit Distance

Naive Bayes

Logistic Regression

Information Retrieval

Vector Semantics and Embeddings

Sequence Labelling

Chatbots

Web graphs, Links, and PageRank

Social Networks

Language Modeling

Text classification

Neural network

CS 124: From Languages to Information Stanford University Winter 2023 This course is centered on extracting information from unstructured data in language and social networks using machine learning tools. It covers techniques like sentiment analysis, chatbot development, and social network analysis. The online world has a vast array of unstructured information in the form of language and social networks. Learn how to make sense of it using neural networks and other machine learning tools, and how to interact with humans via language, from answering questions to giving advice! Extracting meaning, information, and structure from human language text, speech, web pages, social networks. Introducing methods (string algorithms, edit distance, language modeling, machine learning, logistic regression, neural networks, neural embeddings, inverted indices, collaborative filtering, PageRank), applications (chatbots, sentiment analysis, information retrieval, text classification, social networks, recommender systems), and ethical issues. CS106B. CS 107 can be helpful, but is fine if you haven't had it, we'll cover the required UNIX material. Math 51 can also be helpful, but isn't required, since we will introduce the basic vectors knowledge we need in the class. #### Textbook

There is no required textbook, but I'll expect you to know the textbook/reading material listed above, and will test it on the midterms.
- Online new chapters from [Jurafsky and Martin. third edition in progress. *Speech and Language Processing*](https://web.stanford.edu/~jurafsky/slp3/).
- Chapters from Manning, Raghavan, and Schutze. 2008. Introduction to Information Retrieval. Cambridge University Press. You can buy the book, get it from the library, or it's also available online [*HERE*](https://site.ebrary.com/lib/stanford/docDetail.action?docID=10240274).

**Is 106B the only prereq? Do I need 109 or 221 before I take CS124?** : 106B is the only prereq. Taking the course as a sophomore is recommended, but we also get lots of juniors and a reasonable number of frosh; the course is designed to be taken early in your Stanford career. It will help if you have at least done some programming beyond 106B, and is also useful to have had 107 or Math 51, but not required; we'll try to give you pointers to places to make up missing background.

**Can I take this course as a non-CS grad student?**: Yes, although this course is not appropriate for CS grad students (there are graduate versions of all the material in this course), it's very commonly taken by PhD students in the social sciences or humanities who plan to use text processing methods in their research.

CS 124: From Languages to Information

Natural Language Processing

Cipher

JavaScript

Refugee Tweets

Cancer Diagnosis

K-Nearest Neighbors

Mental Health and ELIZA

Open Source Software

Algorithmic bias

Ethical Hacking

Web Security

CS + Climate Change

Cancer Detection with KNN

Trust and Safety

CS 106S Coding for Social Good Stanford University Winter 2023 This course applies fundamental CS concepts to social good problems, including health, government, education, and environment. Students will use their skills to create positive social impact. CS 106B is a recommended prerequisite. CS 106S is a survey course on the applications of fundamental computer science concepts from CS 106B to problems in the social good space (such as health, government, education, and environment). Each week consists of in-class activities designed by student groups, local tech companies, and nonprofits. Some of the topics we will cover include mental health chatbots, tumor classification with basic machine learning, sentiment analysis of tweets on refugees, and the ethical obligation of good security. Recommended prerequisite/corequisite: CS 106B. We're looking forward to a great quarter with you in CS106S! We know you are being equipped with the tools to make super cool stuff. However, sometimes it is difficult to see where these tools fit in the larger scheme of things. We want to show you ways to put the skills you have learned to good social use! Here are our objectives:

- Awareness: For students to gain awareness about the applicability of technology and computer science to enact social good in the world.
- Exposure: For students to learn how to utilize their skills to build tools and projects that create positive social impact.
- Utilization: For students to gain exposure to the variety of current projects and efforts to use computer science for social good.

Now, let's get into some important details: expectations, grading, and meeting time!  

CS 106S Coding for Social Good

Computer Programming