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 | 05.09.2023 | [Вводная лекция](lectures/IIS_lec_1.pdf) [pptx](lectures/IIS_lec_1.pptx) |
 | 13.09.2023 | [Файловая система HDFS](lectures/IIS_lec_2.pdf) [pptx](lectures/IIS_lec_2.pptx) |  
 | 19.09.2023 | [MapReduce](lectures/IIS_lec_3.pdf) [pptx](lectures/IIS_lec_3.pptx) |  
-| 26.09.2023 | [Решение задач MapReduce](lectures/IIS_lec_4.pdf) [pptx](lectures/IIS_lec_4.pptx) |  
+| 26.09.2023 | [Решение задач MapReduce](lectures/IIS_lec_4.pdf) [pptx](lectures/IIS_lec_4.pptx) | 
+| 03.10.2023 | [Решение задач MapReduce - tf-idf](lectures/IIS_lec_5.pdf) [pptx](lectures/IIS_lec_5.pptx) |  
 | 10.10.2023 | [Работа с графами](lectures/IIS_lec_6.pdf) [pptx](lectures/IIS_lec_6.pptx) |  
 
 ## Лабораторные работы
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