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Automatic Personalization on Push News Service Tomonari KAMBA Hidekazu SAKAGAMI Yoshiyuki KOSEKI Yoshiyuki KOSEKI C&C Media Research Labs, NEC Corporation.

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Presentation on theme: "Automatic Personalization on Push News Service Tomonari KAMBA Hidekazu SAKAGAMI Yoshiyuki KOSEKI Yoshiyuki KOSEKI C&C Media Research Labs, NEC Corporation."— Presentation transcript:

1 Automatic Personalization on Push News Service Tomonari KAMBA Hidekazu SAKAGAMI Yoshiyuki KOSEKI Yoshiyuki KOSEKI C&C Media Research Labs, NEC Corporation

2 Why Automatic Personalization? n Pull to Push –liberates users from tiring clicking but, –just brings too much information from net to the desktop n Currently available personalization – keyword/category/channel registration (Tiring!) n ANATAGONOMY: User behavior-based Automatic personalization for push service Push workshop 8 Sep,1997 NEC Corporation

3 Previous Work: Personalized Newspaper n X-press-O (http://pnews.cplaza.ne.jp) –6th WWW Conf. (http://www6.nttlabs.com/HyperNews/get/PAPER142) n Under operation and evaluation, since Nov n Automatic personalization

4 Automatic personalization in ANATAGONOMY (learning) User reads (clicks) articles NEC developed personalization for push service. System extracts document vectors W3C decided to discuss push technology.…. Art.1 Art.2 Art.1 NEC,develop, personalization, push….. Art.2 W3C,decide, discuss, push, technology….. System builds/modifies user profile NEC: 0.3 W3C: 0.3 ……. Push: 0.5 technology: 0.3 Push workshop 8 Sep,1997 NEC Corporation

5 Automatic personalization in ANATAGONOMY (scoring) New article comes in Standard of push technology …. System extracts the document vector Standard, push, technology…. System scores the article by comparing user profile and the document vector Document vector Standard, push, technology…. User profile NEC:0.3 W3C:0.3 Push:0.5 technology:0.3 The document gets high score if similar to user profile Push workshop 8 Sep,1997 NEC Corporation

6 Push Implementation ANATAGONOMY n Two versions –Pseudo 3D Screen Saver (ANATAGONOMY/SS) –Newspaper-like layout (ANATAGONOMY/JV) n Available free, since Apr »http://www.labs.nec.co.jp/freesoft/ANATAGONOMY/ n Delivers the Yomiuri Shinbun - the most popular newspaper in Japan, more than 10 million subscribers n Scheduled push delivery (polling) Push workshop 8 Sep,1997 NEC Corporation

7 ANATAGONOMY/SS (Screen Saver) Scrolls from right to left Shows first sentence while the cursor is on. Shows the whole content when clicked n High score articles shown on the upper area of the screen n Pseudo 3D representation –Fresh articles shown closer (large fonts, light color, fast move) n Also as an ActiveX control (size changeable) –can be attached to IE4.0 ActiveDesktop Category icon Push workshop 8 Sep,1997 NEC Corporation

8 ANATAGONOMY/JV n Java application (JDK1.1.2 or later) n multiple layout Newspaper layout Title list sorted by scores Push workshop 8 Sep,1997 NEC Corporation

9 System architecture User profile Personalization engine articles Document vectors Scoring engine Learning engine ANATAGONOMY/SS Windows ANATAGONOMY/JV Java VM User operation history Article contents and calculated personal scores -article title click -scroll USER Push workshop 8 Sep,1997 NEC Corporation

10 Experimental Evaluation n Goal: –To compare explicit and implicit feedback. –Implicit feedback: SCROLL & ENLARGE –Explicit feedback: user specifies score n Experimental procedures: –Divide 15 users into 3 groups. »Group A: explicit feedback »Group B: implicit feedback »Group D: hybrid (explicit and implicit)

11 Evaluation Result [1] Difference between the system-generated orders and the user-rated orders (chronological change).

12 Evaluation Result [2] System-generated order and user-ratings Explicit feedback modeImplicit feedback mode

13 Evaluation Result [3] Hybrid (Explicit and Implicit) System-generated order and user-ratings

14 Discussion n How to implement Automatic personalization on real-push? –Server side personalization or client side? –How to feedback user behaviors on the client n Privacy issue Push workshop 8 Sep,1997 NEC Corporation

15 Personalization on Real Push User profile (OPS) Personalization engine articles Document vectors Scoring engine Learning engine Article contents and document vectors Push workshop 8 Sep,1997 NEC Corporation Server Multicast “Real” Push delivery server Client


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