LALR(1) Part - 2

Duration: 8 min

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Module outline

  1. Quantitative Aptitude: Ratio and Proportion (Ratios), Data Interpretation, Mixture and Alligation, Permutation and Combination, Number System, Sequence and Series (Series), Speed Time and Distance, Speed Mathematics and Basic Mathematics, Algebra, Percentage, Profit and Loss, Simple Interest and Compound Interest, Powers and Exponents (Surds and Indices), Time and Work, Mensuration and Geometry, Partnership
  2. Reasoning Ability: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Seating Arrangements, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Directions (Direction Test), Ranking, Order and Sequence, Syllogisms, Blood Relations, Puzzle Solving (Puzzles), Inequality, Machine Input-Output
  3. English Language: Vocabulary, Noun, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Cloze Test (Cloze Passage), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Construction, Pronoun, Preposition, Conjunction, Adverb, Verb, Modals, Articles, Determiner, Interjection
  4. General Awareness: Evolution of Indian Banking (Banking & Financial Awareness), GK- Current Affairs, Static General Knowledge, Indian Economy
  5. C Concepts + MCQs (IT Specialist): C Programming by Yash Sir, C Language Core
  6. Java (IT Specialist): Java
  7. Python (IT Specialist): Python for Placements by Yash Sir, Python Basics
  8. OOPs (IT Specialist): Object Oriented Programming (OOPS)
  9. DBMS (IT Specialist): Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, Relational Calculus, Transaction Management, Concurrency Control, Database Recovery, ORDBMS, Database Security & Authorization, Query Processing & Optimization, Enhanced Data Models, Data Warehousing & Mining, Big Data Systems, NoSQL
  10. SQL (IT Specialist): SQL
  11. Software Engineering (IT Specialist): Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  12. Data Structure (IT Specialist): Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  13. Operating System (IT Specialist): Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Windows OS, Linux OS, Security, Distributed Systems, Virtual Machines
  14. Compiler Design (IT Specialist): Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  15. Computer Architecture (IT Specialist): Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations, Multiprocessors, Programming the Basic Computer
  16. Data Communication & Networking (IT Specialist): Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security
  17. Descriptive Test (Main Exam): English Writing Ability
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video demonstrates the step-by-step construction of an LR(0) parsing automaton for a specific context-free grammar. The instructor begins by defining the grammar rules: S -> Aa / bAc / dc / bda and A -> d. He then augments the grammar by introducing a new start symbol S' -> S to handle the end of input string. The core of the lecture involves calculating the closure of the initial state and systematically deriving subsequent states (I0 through I10) by identifying transitions on non-terminals and terminals. The visual content features a whiteboard where the instructor writes out the augmented productions, constructs the initial state I0, and draws the state transition diagram, labeling each state and the symbols that trigger transitions between them.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The lecture begins with the instructor presenting the grammar rules on the whiteboard: S -> Aa / bAc / dc / bda and A -> d. He introduces the concept of grammar augmentation by adding a new start symbol S' -> S. He then lists the augmented productions, writing them out as S' -> S, $, S -> Aa, $, S -> bAc, $, S -> dc, $, S -> bda, $, and A -> d, a. The instructor proceeds to construct the initial state, labeled I0. He writes the items for I0, starting with S' -> .S, $, and then adds the closure items: S -> .Aa, $, S -> .bAc, $, S -> .dc, $, S -> .bda, $, and A -> .d, a. This establishes the foundation for the state machine construction.

  2. 2:00 – 5:00 02:00-05:00

    The instructor begins drawing the state transitions originating from I0. He identifies a transition on 'S' leading to state I1, which contains the item S' -> S., $. Next, he draws a transition on 'A' from I0 to state I2, containing S -> A.a, $. He then explores transitions on terminals 'b' and 'd'. A transition on 'b' leads to state I3, which includes items S -> b.Ac, $, S -> b.da, $, and the closure item A -> d.c. A transition on 'd' leads to state I4, containing S -> d.c, $ and A -> d., a. The instructor then expands from state I2, drawing a transition on 'a' to state I5, which contains the completed item S -> Aa., $. He further expands from state I3, drawing transitions on 'A' to state I6 (S -> b.A.c, $) and on 'd' to state I7 (S -> bd.a, $, A -> d., c).

  3. 5:00 – 8:18 05:00-08:18

    In the final segment, the instructor completes the state transition diagram. He draws a transition from state I4 on the symbol 'c' leading to state I8, which contains the item S -> dc., $. From state I6, he draws a transition on 'c' leading to state I9, containing S -> bAc., $. Finally, from state I7, he draws a transition on 'a' leading to state I10, which contains the item S -> bda., $. The video concludes with the full LR(0) automaton diagram visible on the whiteboard, showing the interconnected states I0 through I10 and the specific symbols that trigger each transition. The instructor has successfully mapped out the entire parsing structure for the given grammar.

The video provides a comprehensive walkthrough of building an LR(0) parsing automaton. It starts with the fundamental step of grammar augmentation, ensuring the start symbol is unique. The instructor then methodically applies the closure and goto operations to generate states I0 through I10. Each state is carefully derived based on the items present and the symbols following the dot. The final diagram represents the complete state machine, which is essential for constructing the parsing table. This progression from raw grammar rules to a structured automaton illustrates the core algorithmic process in compiler design for bottom-up parsing.

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