Fujii, K.; Nanba, H.; Takezawa, T.; Ishino, A. at ENTER2016 eTourism Conference

1. Enriching Travel Guidebooks with Travel Blog
Entries and Archives of Answered Questions

2. Contents
2
(1) Background & Purpose
(2) Our system
(3) Our method:
Step 1: Content-type classification of guidebook pages, blog
entries, and QA archives.
Step 2: Alignment of blog entries and QA archives with a
guidebook.
Step 3: Alignment of blog entries and QA archives with a
guidebook page, having the same content-type, which was
determined in Step 1.
(4) Experiments
(5) Demonstration
(6) Conclusions

3. Background
Problem
●Guidebooks are not updated frequently.
●There are large differences in the amount
of information on each tourist destination.
3
Travel Guidebooks give
basic information about
famous tourist spots,
souvenir shops, and restaurants.

4. Purpose
4
Enriching travel guidebooks with SNS
contents.
 Travel blog entries
 Archives of Answered Questions

5. Our System
5
(1) Blog (2) QA
Accommodation
Kakeroma
Island

6. Our System
6
Question:
Can you please recommend any guesthouses
in Kakeroma Island in Amami-Oshima? I'm
not really interested in diving, so guesthouses
near the shore is not really required and I will
visit in late July.
Answer:
Guesthouses? I really don't recommend you to
stay in Kakeroma, but I recommend those in
Ukejima Island. Ukejima is just next to
Kakeroma and the guesthouses there are better
because...

7. Information from SNS
7
 Unrecommended information.
 Local information provided by local people.
 Tourist spots or events influenced by
transportation. (e.g. “I don’t recommend to
elderly people, because we need to go up and
down a hill a couple of times.”)

8. Procedure of Alignment
8
Step 1: Content-type classification of guidebook pages, blog
entries, and QA archives.
Step 2: Alignment of blog entries and QA archives with a
guidebook.
Step 3: Alignment of blog entries and QA archives with a
guidebook page, having the same content-type, which was
determined in Step 1.
Coarse-to-fine alignment

9. Alignment of SNS with Guidebooks
9
I will stay at Miyajima
Hotel. Are there any
nice restaurants near
the hotel?
QA
Miya
jima
Would you recommend
somewhere I can enjoy the
view at night in Miyajima?
QA
Dine
Watch
Watch

10. Content Types
10
Watch
Experience
Buy
Dine
Stay

11. Content Types
11
Watch
Experience
Buy
Dine
Stay

12. Content Types
12
Watch
Experience
Buy
Dine
Stay

13. Content Types
13
Watch
Experience
Buy
Dine
Stay

14. Content Types
14
Watch
Experience
Buy
Dine
Stay

15. Content Types
15
Watch
Experience
Buy
Dine
Stay

16. Content Type Classification
16
Machine learning (SVM) based classification
 Textual information
 Image information (BoVW)
Experience
Marine and
Sky

17. Procedure of Alignment
17
Step 1: Content-type classification of guidebook pages, blog
entries, and QA archives.
Step 2: Alignment of blog entries and QA archives with a
guidebook.
Step 3: Alignment of blog entries and QA archives with a
guidebook page, having the same content-type, which was
determined in Step 1.
Coarse-to-fine alignment

18. Alignment of blog entries with guidebook
pages using content-type classification
(Step 2)
18
List of
location
name
List of
location
name
buy
dine
experience
experience
experience
Blog
entries
experience
Guidebooks
pages

19. Procedure of Alignment
19
Step 1: Content-type classification of guidebook pages, blog
entries, and QA archives.
Step 2: Alignment of blog entries and QA archives with a
guidebook.
Step 3: Alignment of blog entries and QA archives with a
guidebook page, having the same content-type, which was
determined in Step 1.
Coarse-to-fine alignment

20. Procedure of Alignment to a
Guidebook Page (Step 3)
20
I recommend an oyster restaurant
near Itsukushima shrine.

21. 21
Travel Blog
Entries
QA Contents
(1) Identify location names in texts
(2) Calculate similarities between SNS and Guidebooks
Procedure of Alignment to a
Guidebook Page (Step 3)

22. Identify Location Names
22
Question:
Can you please recommend any guesthouses in
Kakeroma island in Amami-Oshima?
Answer:
Guesthouses? I really don’t recommend you to
stay in Kakeroma island, but I recommend those
in Ukejima. Ukejima is just next to Kakeromajima
and the guesthouses there are better because…
Using CaboCha software

23. 23
I recommend an oyster
restaurant near Itsukushima
shrine.
Dine
Dine DineExperienceWatch
Procedure of Alignment to a
Guidebook Page (Step 3)

24. 24
I recommend an oyster
restaurant near Itsukushima
shrine.
Dine
Dine DineExperienceWatch
0.9
0.3
Procedure of Alignment to a
Guidebook Page (Step 3)

25. 25
I recommend an oyster
restaurant near Itsukushima
shrine.
Dine
Dine DineExperienceWatch
0.9
0.3
Procedure of Alignment to a
Guidebook Page (Step 3)

26. Experiments
(for Step 2)
26
 Guidebooks
90 guidebooks
 Travel blog entries
1000
 QA archives（Yahoo! chiebukuro）
1998 in “region / travel” category

27. Experimental Methods
27
Classification Feature Content
Types
KNN_TYPE KNN LOCATION ◯
KNN_LOC KNN LOCATION ☓
BASE_KNN KNN WORD ☓
BASE_SVM SVM WORD ☓
Our methods: KNN_TYPE, KNN_LOC
Baseline methods: BASE_KNN, BASE_SVM

28. Experimental Results
28
Precision Recall
Our
methods
KNN_TYPE 0.811 0.204
KNN_LOC 0.767 0.201
Baseline
methods
BASE_KNN 0.273 0.155
BASE_SVM 0.216 0.030
For an automatically aligned blog entries for a guidebook
Precision Recall
Our
methods
KNN_TYPE 0.858 0.210
KNN_LOC 0.783 0.206
Baseline
methods
BASE_KNN 0.487 0.166
BASE_SVM 0.405 0.184
For an automatically aligned QA archives for a guidebook

29. Experiments
(for Step 3)
29
 Guidebooks: 90
 Travel Blog Entries: 100
 QA archives: 100

30. 30
Experiments
Alignment of Blog Entries and QA Archives with a Guidebook Page
Coarse-to-fine Content types
Our method 1 yes no
Our method 2 yes yes
Baseline no no
Blog entry QA archive
Our method 1 0.82 0.57
Our method 2 0.82 0.77
Baseline 0.72 0.53
Experimental methods
Ratio of enriched guidebook pages that were
judged to be “Appropriate”
Whether blog entries and QA archives that were aligned
with the guidebook page were “Appropriate” or not

31. Conclusions
31
We proposed a method for enriching guidebooks by
aligning them with blog entries and QA archives.
• Our method using both textual and image
information obtained the best performance for
content type classification.
• Content types are useful for aligning travel blog
entries and QA archives to guidebooks.
• Our method using coarse-to-fine model with
content types obtained the best performance for
aligning SNS with pages of guidebooks