# Lecture 07. History and Development of LLMs
## Notice of New Lesson Postings
Hello, students! For this course, **82** new lessons (across a total of 13 sections) are scheduled to be posted sequentially. Since I am producing multiple courses simultaneously, I am proceeding by posting **a little bit of each course alternately**, rather than uploading one entire course at once. Below are the posting principles and the schedule for each section of this course.
> For your reference, the lessons being posted now are not entirely new content, but part of the production of **revised editions (2nd or 3rd editions)** that reinforce existing lectures.
## Posting Principles
- Currently, I am rotating through a total of 19 courses in order (circular method), posting one lesson per course alternately.
- Postings take place on weekdays (Mon–Fri), with a total of 5 new lessons uploaded daily across all courses.
- For this course, the next lesson will be posted each time its turn comes around in the rotation.
- While the posting speed may feel slow compared to other courses, all courses are progressing together in the same manner.
## Posting Schedule by Section (13 Sections Total)
| Section | Number of Lessons | Start Date | End Date |
|---|---|---|---|
| Section 1. Origins and Early Development of Language Models | 2 | 2026-07-02 | 2026-07-08 |
| Section 2. Emergence of Distributional Hypothesis and Evolution of Word Representation | 7 | 2026-07-13 | 2026-08-13 |
| Section 3. Limitations of Static Embeddings and Recognition of the Need for Context | 6 | 2026-08-19 | 2026-09-15 |
| Section 4. Tokenization Methods and Solving the Out-of-Vocabulary (OOV) Problem | 7 | 2026-09-21 | 2026-10-22 |
| Section 5. ELMo - The Beginning of Contextual Embeddings | 7 | 2026-10-27 | 2026-11-27 |
| Section 6. Transformer and Self-Attention Mechanisms | 7 | 2026-12-03 | 2027-01-04 |
| Section 7. BERT - The Revolution of Bidirectional Contextual Learning | 7 | 2027-01-08 | 2027-02-05 |
| Section 8. Variant Models of BERT | 6 | 2027-02-10 | 2027-03-03 |
| Section 9. GPT and Expansion to Sentence-Level Representation - The Peak of Contextual Embeddings | 8 | 2027-03-08 | 2027-04-05 |
| Section 10. The Transformer Revolution and the Era of Large Language Models | 4 | 2027-04-08 | 2027-04-20 |
| Section 11. Latest LLM Models and Technological Advancements | 7 | 2027-04-23 | 2027-05-18 |
| Section 12. LLM Efficiency Technologies and Advancements in Model Optimization | 7 | 2027-05-20 | 2027-06-14 |
| Section 13. LLM Applications, System Integration, and Future Outlook | 7 | 2027-06-16 | 2027-07-08 |
## Estimated Completion
Based on the current pace, the estimated completion date for all postings in this course is around **July 2027**. (The actual schedule may be moved up or delayed depending on production progress.)
