Explore language contact and computational models of language change in this lecture from CMU's Multilingual Natural Language Processing course. Delve into topics such as lexical borrowing, cross-lingual similarities, and lexicon mapping across languages. Learn about transliteration models and evaluation, cognates and loanwords, and bilingual lexicon induction. Examine real-world examples of Arabic-Swahili borrowing and discover various linguistic resources for studying language contact phenomena. Gain insights into the complex interactions between languages and their impact on natural language processing tasks.