Information retrieval courses can help you learn search algorithms, indexing techniques, and data mining strategies. You can build skills in evaluating search results, optimizing query performance, and understanding user intent. Many courses introduce tools like Elasticsearch, Apache Solr, and various machine learning libraries, showing how these technologies enhance information retrieval processes and improve the accuracy of search results.

University of California, Davis
Skills you'll gain: Social Network Analysis, Social Sciences, Network Analysis, Data Science, Machine Learning, Machine Learning Methods, Computational Thinking, Economics, Policy, and Social Studies, Artificial Intelligence, Data Analysis, Social Impact, Simulations, Big Data, Data Collection, Scientific Methods, Digital Analysis, Digital Transformation
★ 4.7 (354) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Routing Protocols, Command-Line Interface, Open Shortest Path First (OSPF), Network Monitoring, Virtual Local Area Network (VLAN), Virtual Networking, Border Gateway Protocol, Network Security, Network Performance Management, Enterprise Architecture, Virtualization, Network Architecture, Network Routing, Wireless Networks, Network Planning And Design, Infrastructure Security, Ansible, Network Infrastructure, General Networking, IT Automation
★ 4.5 (11) · Intermediate · Specialization · 3 - 6 Months

LearnQuest
Skills you'll gain: Threat Modeling, IT Security Architecture, Threat Management, Security Architecture Review, Internet Of Things, Network Security, Information Systems Security, Security Controls, Data Security, Cryptographic Protocols, Vulnerability Assessments, Risk Management Framework, Cloud Computing
★ 4.6 (8) · Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Public Key Infrastructure, Cybersecurity, Information Systems Security, Data Security, Cyber Attacks, Information Assurance, Network Security, Risk Management Framework, Security Controls, Cryptography, Cryptographic Protocols, Key Management, Security Engineering, Threat Modeling, Security Management, Authorization (Computing), Encryption, Email Security, Data Integrity, Authentications
★ 3.9 (241) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Dashboard Creation, System Monitoring, Microsoft Azure, Performance Tuning, Cloud Management, Technical Support and Services, Continuous Monitoring, Resource Management, Virtual Machines, Query Languages
★ 4.7 (15) · Beginner · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Data Governance, Data Quality, Data Maintenance, Data Validation, Data Management, Clinical Data Management, Health Information Management, Metadata Management, Technical Communication, Change Control
★ 4.7 (158) · Intermediate · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Data Ethics, Artificial Intelligence, Research, Natural Language Processing, Big Data, Research Methodologies, AI literacy, Social Sciences, Applied Machine Learning, Responsible AI, Machine Learning, Ethical Standards And Conduct, Case Studies, Algorithms
★ 4.6 (744) · Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Calculus, Applied Mathematics, Data Modeling, Model Optimization, Estimation, Graphing, Mathematical Modeling, Data Analysis Software, Algebra, Cost Estimation, Mathematical Software, Linear Algebra, Trigonometry, General Mathematics, Advanced Mathematics, Analysis, Derivatives, Mathematical Theory & Analysis, Geometry, Data Analysis
★ 4.8 (391) · Intermediate · Specialization · 3 - 6 Months

Imperial College London
Skills you'll gain: Health Technology, Telehealth, Health Disparities, Health Informatics, Health Systems, Electronic Medical Record System, Electronic Medical Record, Health Equity, Interoperability, Public Health, Epidemiology, Big Data, Public Health and Disease Prevention, Digital Transformation, Applied Machine Learning, Health Information Management, Machine Learning, Artificial Intelligence and Machine Learning (AI/ML), Artificial Intelligence, Data Integration
★ 4.5 (266) · Intermediate · Course · 1 - 4 Weeks

Instituto Tecnológico de Aeronáutica
Skills you'll gain: Model View Controller, Selenium (Software), Web Applications, Java, Java Programming, Data Access, Java Platform Enterprise Edition (J2EE), Agile Methodology, Web Development, Integration Testing, Software Testing, Application Development, Test Tools, Agile Software Development, Test Automation, Functional Testing, Software Design Patterns
★ 4.7 (197) · Intermediate · Course · 1 - 4 Weeks
Google Cloud
Skills you'll gain: Google Sheets, Spreadsheet Software, Google Workspace, Data Visualization, Data Validation, Business Analysis, Data Analysis Software, Data Integration, Automation
★ 4.7 (65) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Network Monitoring, Routing Protocols, Software-Defined Networking, TCP/IP, Network Routing, Open Shortest Path First (OSPF), Network Performance Management, Network Planning And Design, Disaster Recovery, Computer Networking, Virtual Networking, Network Architecture, Virtual Local Area Network (VLAN), Network Administration, Network Protocols, Border Gateway Protocol, Document Management, Networking Hardware
Intermediate · Course · 1 - 3 Months