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magistraleinformatica:ir:ir21:start [20/12/2021 alle 07:53 (3 anni fa)] – [Lectures] Paolo Ferragina | magistraleinformatica:ir:ir21:start [18/08/2022 alle 08:16 (2 anni fa)] (versione attuale) – [Information Retrieval - Academic Year 2020/2021] Paolo Ferragina |
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====== Information Retrieval - Academic Year 2020/2021 ====== | ====== Information Retrieval - Academic Year 2021/2022 ====== |
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====== General Information ====== | ====== General Information ====== |
| 09/11/21, start at 09:00 | room A1 and virtually | {{ :magistraleinformatica:ir:ir21:ir211109.pdf |text}}, {{ :magistraleinformatica:ir:ir21:informationretrieval-2022-comp1.pdf |results}}, {{ :magistraleinformatica:ir:ir21:ir_2021_11_09_tutto_.pdf |solution}} | The **midterm exam** will consist of a set of exercises, and will last for 45mins. The part of the program for the exercises will be detailed in the list of lectures below. | | | 09/11/21, start at 09:00 | room A1 and virtually | {{ :magistraleinformatica:ir:ir21:ir211109.pdf |text}}, {{ :magistraleinformatica:ir:ir21:informationretrieval-2022-comp1.pdf |results}}, {{ :magistraleinformatica:ir:ir21:ir_2021_11_09_tutto_.pdf |solution}} | The **midterm exam** will consist of a set of exercises, and will last for 45mins. The part of the program for the exercises will be detailed in the list of lectures below. | |
| 14/12/2021, start at 09:00 | room C and virtual | {{ :magistraleinformatica:ir:ir21:ir211214.pdf |text}}, {{ :magistraleinformatica:ir:ir21:results-finalterm-2021.pdf |results}}, {{ :magistraleinformatica:ir:ir21:ir_14.12.2021_soluzione_.pdf |solution}} | The **FinalTerm exam** will have the same structure as the other one, but can participate only the students who got >=18 rank in the first MidTerm. Students have to register at the [[https://forms.office.com/r/gFmFVWVWzp|following form]] by December 7th, 2021.\\ Oral will occur remotely the 20th December, starting at 9:00, on the Teams' room of the course. | | | 14/12/2021, start at 09:00 | room C and virtual | {{ :magistraleinformatica:ir:ir21:ir211214.pdf |text}}, {{ :magistraleinformatica:ir:ir21:results-finalterm-2021.pdf |results}}, {{ :magistraleinformatica:ir:ir21:ir_14.12.2021_soluzione_.pdf |solution}} | The **FinalTerm exam** will have the same structure as the other one, but can participate only the students who got >=18 rank in the first MidTerm. Students have to register at the [[https://forms.office.com/r/gFmFVWVWzp|following form]] by December 7th, 2021.\\ Oral will occur remotely the 20th December, starting at 9:00, on the Teams' room of the course. | |
| 17/01/2022, start at 09:00 | room C1 | text, results, solution | | | | 17/01/2022, start at 09:00 | room C1 | {{ :magistraleinformatica:ir:ir21:ir220117.pdf |text}}, {{ :magistraleinformatica:ir:ir21:ir-jan2022.pdf |results}}, {{ :magistraleinformatica:ir:ir21:ir220117_soluzione_.pdf |solution}} | | |
| 07/02/2022, start at 09:00 | room **TBD** | text, results, solution | | | | 07/02/2022, start at 09:00 | room A1 | {{ :magistraleinformatica:ir:ir21:ir220207.pdf |text}}, {{ :magistraleinformatica:ir:ir21:ir090222_res.pdf |results}}, {{ :magistraleinformatica:ir:ir21:ir220207_soluzione_.pdf |solution}} | | |
| | 13/06/2022, start at 09:00 | room L1 | {{ :magistraleinformatica:ir:ir21:ir220613.pdf |text}} | | |
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====== Materials for study ====== | ====== Materials for study ====== |
| 22.11.2021 | Storage of tf-idf and use for computing document-query similarity. Fast top-k retrieval: high idf, champion lists, many query-terms, fancy hits, clustering. | Sect 6.2 and 6.3 and 7 from [MRS].\\ [[https://www.dropbox.com/s/iyrlc81wuzbtewu/lect%2012-text%20ranking.ppt?dl=0|Slides]] | | | 22.11.2021 | Storage of tf-idf and use for computing document-query similarity. Fast top-k retrieval: high idf, champion lists, many query-terms, fancy hits, clustering. | Sect 6.2 and 6.3 and 7 from [MRS].\\ [[https://www.dropbox.com/s/iyrlc81wuzbtewu/lect%2012-text%20ranking.ppt?dl=0|Slides]] | |
| 23.11.2021 | Exact Top-K: WAND and blocked-WAND. Relevance feedback, Rocchio, pseudo-relevance feedback, query expansion. Performance measures: precision, recall, F1 and user happiness. | Sect 8.1-8.3 and 9 [MRS].\\ [[https://unipiit.sharepoint.com/sites/a__td_50472/Shared%20Documents/General/Recordings/Lezione%20del%202021_11_23-20211123_090451-Meeting%20Recording.mp4|Video]] | | | 23.11.2021 | Exact Top-K: WAND and blocked-WAND. Relevance feedback, Rocchio, pseudo-relevance feedback, query expansion. Performance measures: precision, recall, F1 and user happiness. | Sect 8.1-8.3 and 9 [MRS].\\ [[https://unipiit.sharepoint.com/sites/a__td_50472/Shared%20Documents/General/Recordings/Lezione%20del%202021_11_23-20211123_090451-Meeting%20Recording.mp4|Video]] | |
| 29.11.2021 | Random Walks. Link-based ranking: pagerank, topic-based pagerank, personalized pagerank. | Chap 21 of [MRS]. [[https://www.dropbox.com/s/mb6y2k93lba9j10/lect%2013-Web%20ranking.ppt?dl=0|Slides]] and [[https://unipiit.sharepoint.com/sites/a__td_50472/Shared%20Documents/General/Recordings/Lezione%20del%202021_11_29-20211129_110458-Meeting%20Recording.mp4|video]] | | | 29.11.2021 | Random Walks. Link-based ranking: pagerank, topic-based pagerank, personalized pagerank. Application to Text Summarization. | Chap 21 of [MRS]. [[https://www.dropbox.com/s/mb6y2k93lba9j10/lect%2013-Web%20ranking.ppt?dl=0|Slides]] and [[https://unipiit.sharepoint.com/sites/a__td_50472/Shared%20Documents/General/Recordings/Lezione%20del%202021_11_29-20211129_110458-Meeting%20Recording.mp4|video]] | |
| 30.11.2021 | HITS. Projections to smaller spaces: Latent Semantic Indexing (LSI). Sketch of the ideas underlying Entity Linkers and Knowledge Graphs. | Chap 18 from [MRS].\\ [[https://www.dropbox.com/s/ylcnklittbc4wne/lect%2014-LSI%20and%20random%20proj%20-%20shorter.ppt?dl=0|Slides]] and [[https://unipiit.sharepoint.com/sites/a__td_50472/Shared%20Documents/General/Recordings/Lezione%20del%202021_11_30-20211130_090133-Meeting%20Recording.mp4?web=1|video]]. | | | 30.11.2021 | HITS. Projections to smaller spaces: Latent Semantic Indexing (LSI). Sketch of the ideas underlying Entity Linkers and Knowledge Graphs. | Chap 18 from [MRS].\\ [[https://www.dropbox.com/s/ylcnklittbc4wne/lect%2014-LSI%20and%20random%20proj%20-%20shorter.ppt?dl=0|Slides]] and [[https://unipiit.sharepoint.com/sites/a__td_50472/Shared%20Documents/General/Recordings/Lezione%20del%202021_11_30-20211130_090133-Meeting%20Recording.mp4?web=1|video]]. | |
| 06.12.2021 | Elastic Search, with lab: Students are required to bring their own laptop in class, with already installed [[https://docs.docker.com/get-docker/|Docker]] and then the image of [[https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html|ElasticSearch]] via **docker pull** (i.e. first step of "Pulling the image"). | | | | 06.12.2021 | Elastic Search, with lab: Students are required to bring their own laptop in class, with already installed [[https://docs.docker.com/get-docker/|Docker]] and then the image of [[https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html|ElasticSearch]] via **docker pull** (i.e. first step of "Pulling the image"). | | |