1. Naver vs. Google.co.kr For foreigners visiting Korea Zdenek Slegl Michal Kaciuba Jorge Sanchez

2. Naver  Launched: June 1999  Monthly visitors(2013) : 34,271 316  Market share: 49,75%

3. Google  Launched: September 4. 1998  Monthly visitors(2013) : 17,251 555  Market share: 36,9%

4. Google query results

5. Naver query results

7. Google incomplete queries

8. Naver incomplete queries

9. Google advanced search

10. Naver advanced search???

11. Naver in Korean

12. Target user  Short-time travel (one week)  Non-Korean speaker  Self-organized tourist trips  Separated in two categories  Low cost  Regular cost

13. Methodology  50+ people to answer questionary  Based on answers -> Set of queries to be evaluated  Java program for getting automatic statistics of search engines

14. Questionnaire

15. Responses

16. Created queries from responses  Dangers of traveling to South Korea  Weather in South Korea  Best sites in South Korea  Low cost;  Cheap accommodation in South Korea  Cheap transportation in South Korea  Eating traditional food in market / Low cost food in South Korea  Regular cost;  Good quality hotels in South Korea  Fastes/comfortable transportation in South Korea  Best traditional restaurants in South Korea  Extreme activities in South Korea

17. Program calculating results  We took first 100 of results in Google  In Naver we take the first 50 in the first category and the rest from a few others  We manually selected the relevant documents  Program saved the document with results of dice and Jaccard coefficient and cosine similarity  From these data we generated graphs

18. Java program interface

20. Formulas Cosine similarity Jaccard’s coefficient Dice’s coefficient

21. Results

22. Reciprocal Rank

23. Pricision

24. Pseudo Average Precision

25. Naver – Cheap accommodation

26. Google - Cheap accommodation

27. Naver – Best traditional food

28. Google – Best traditional food

29. Naver – Best sites

30. Google – Best sites

31. Conclusions  Google did better than Naver because  Language  Way of thinking(structured)  Simplicity vs Quantity  If queries are in Korean, Naver would do equally or even better  Not so useful for foreigners  Blogs versus regular web sites

32. Thank you!