diff --git a/year4/semester1/CT4100: Information Retrieval/papers/2021_2022_CT4100_1_1_5.PDF b/year4/semester1/CT4100: Information Retrieval/papers/2021_2022_CT4100_1_1_5.PDF new file mode 100644 index 00000000..a22f9d22 Binary files /dev/null and b/year4/semester1/CT4100: Information Retrieval/papers/2021_2022_CT4100_1_1_5.PDF differ diff --git a/year4/semester1/CT4100: Information Retrieval/papers/2021_2022_CT4100_1_2_3.PDF b/year4/semester1/CT4100: Information Retrieval/papers/2021_2022_CT4100_1_2_3.PDF new file mode 100644 index 00000000..9f142b4f Binary files /dev/null and b/year4/semester1/CT4100: Information Retrieval/papers/2021_2022_CT4100_1_2_3.PDF differ diff --git a/year4/semester1/CT4100: Information Retrieval/papers/2022_2023_CT4100_1_2_3.PDF b/year4/semester1/CT4100: Information Retrieval/papers/2022_2023_CT4100_1_2_3.PDF new file mode 100644 index 00000000..f870a029 Binary files /dev/null and b/year4/semester1/CT4100: Information Retrieval/papers/2022_2023_CT4100_1_2_3.PDF differ diff --git a/year4/semester1/CT4100: Information Retrieval/papers/2023_2024_CT4100_1_1_5.PDF b/year4/semester1/CT4100: Information Retrieval/papers/2023_2024_CT4100_1_1_5.PDF new file mode 100644 index 00000000..07baaded Binary files /dev/null and b/year4/semester1/CT4100: Information Retrieval/papers/2023_2024_CT4100_1_1_5.PDF differ