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| Title: | 兩階段動態團體推薦系統：從個人到團體決策的動態適應機制
A Two-Stage Dynamic Group Recommendation System: Dynamic Adaptation from Individual to Group Decision-Making |
| Authors: | 蔡凱亘
Tsai, Kai-Hsuan |
| Contributors: | 林怡伶
Lin, Yi-Ling
蔡凱亘
Tsai, Kai-Hsuan |
| Keywords: | 團體推薦
動態機制
團體決策
Group Recommendation
Dynamic Mechanism
Group Decision-Making |
| Date: | 2025 |
| Issue Date: | 2025-09-01 15:03:44 (UTC+8) |
| Abstract: | 團體推薦系統常常面臨資料稀少、偏好動態偏移以及難以達成團體共識等挑戰。本研究遵循設計科學的方法，提出了兩階段動態團體推薦系統，藉由兩階段的設計以及能夠捕捉使用者即時情境和意圖的動態機制，從而實現個人化且符合團體目的的團體推薦，且無需依賴團體的歷史資料。在第一階段，使用者根據當下的情境篩選器接收個人化推薦；在第二階段，這些推薦被聚合形成最終的團體推薦。本系統設計同時融合了兩種動態機制：由群組創建者擔任代表，基於領導者的推薦機制 (LBD) 和允許所有成員參與貢獻，基於個體的推薦機制 (IDD)。實驗結果表明，兩種機制均能提供令人滿意且目標一致的推薦結果，但使用者普遍更喜歡 IDD 機制，認為其具有更高的靈活性、參與度和多樣性。本研究證明了將動態的使用者輸入整合到輕量級、使用者導向的設計中，使團體推薦系統能夠更好地適應團體需求並增強決策體驗。
Group Recommendation Systems (GRSs) often face challenges such as data sparsity, dynamic preference shifts, and difficulty in reaching group consensus. Following the design science approach, this study proposes a two-stage dynamic GRS. Through a two-stage design and a dynamic mechanism that can capture users' immediate context and intent, it can achieve personalized and group-purpose group recommendations without relying on the historical group data. In the first stage, users receive individual recommendations based on current contextual filters; in the second stage, these are aggregated to form a final group recommendation. The system design incorporates two dynamic mechanisms: leader-based (LBD) where the group creator acts as the representative and sets the filter, and individual-driven (IDD) that allows all members to participate in expressing preferences. Experimental results show that both mechanisms can provide satisfactory and purpose-aligned recommendation results, and users generally prefer the IDD mechanism, believing that it has higher flexibility, participation, and diversity. This study demonstrates the value of integrating dynamic user input into a lightweight, user-oriented design, enabling GRSs to better adapt to group needs and enhance the decision-making experience. |
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| Description: | 碩士
國立政治大學
資訊管理學系
112356006 |
| Source URI: | http://thesis.lib.nccu.edu.tw/record/#G0112356006 |
| Data Type: | thesis |
| Appears in Collections: | [資訊管理學系] 學位論文
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