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Table 3 Appearance frequency of extracted morphemes

From: Curricular evaluation of “SHOKUIKU program” as a postgraduate minor course of food and nutrition education using a text-mining procedure

noun

sahen noun

na-adjective

organization name

place name

nai adjective

adverb/noun

force extraction term

interjections

verb

adjective

adverb

noun C

self

146

research

245

necessary

104

Ajinomoto

13

Japan

83

problem

41

now

93

SHOKUIKU

237

thanks (hiragana)

78

think

747

significant

138

again

68

SHOKU

196

foodstuff

106

topic

132

various

97

Kirin

5

China

31

difference

18

today

78

evidence

219

to

13

feel

333

numerous

129

actual

61

person

169

information

100

talk

126

very

78

McDonald’s

3

America

19

means

12

this time

50

interest

199

na

13

know

214

difficult

77

first

55

taste

52

knowledge

95

cooking

111

important

75

S&B Foods

3

American

15

difference (hiragana)

3

usual

48

scientific

104

o

9

consider

212

pleasant

69

specially

53

body

46

teacher

78

understanding

103

request

64

Ochanomizu University

1

Ethiopia

10

way

1

a lot of (hiragana)

47

collagen

45

very much

6

listen

141

interesting

65

some

48

mind

43

nutrition

71

lesson

82

health

43

S&B

1

Maldives

7

mistake

1

numerously

44

cookery science

36

sure

5

eat

132

good

62

really

45

eye

33

content

63

explanation

71

question

42

Kikkoman

1

Africa

6

  

from now on

39

registered dietitian

35

e

3

learn

129

accurate

58

entirely

24

soma

26

field

58

study

57

so

38

Suntory

1

Beijing

5

  

past

34

attention

34

ma

2

understand

119

big

42

always

17

water

26

viewpoint

52

meal

53

familiar

36

Tamasu

1

Okinawa

4

  

recently

33

function

27

ah

1

surprised

91

strong

36

why

11

oil

26

language

50

influence

47

precious

31

Disney

1

Japanese

3

  

result

32

food culture

27

that

1

do

88

detailed

27

not always

7

other

23

effect

49

lecture

46

certain

26

Yakult

1

Australia

2

  

time

21

importance

26

yeah

1

see

81

high

25

unexpectedly

6

country

19

science

48

sense

42

like

22

health office

1

Saitama

2

  

future

21

curry powder

22

hey

1

have

74

new

24

variously

6

quantity

18

eating habit

48

cuisine

36

greatly

18

Ministry of Health and Welfare

1

Shanghai

2

  

present time

19

nutrition science

22

excuse

1

use

60

wide

20

absolutely

6

power

18

component

46

experiment

35

unexpected

17

Kagawa Nutrition University

1

Asia

1

  

before

17

food and nutritional science

21

nice to meet you

1

convey

54

broad

19

obscurely

5

year

15

reason

40

intake

335

several

17

Tokyo Gas

1

Sydney

1

  

each

15

cooking method

21

thanks

1

differ

52

few

19

furthermore

5

aspect

15

data

39

story

334

fresh

16

Japan Women’s University

1

New York

1

  

previously

14

perception

20

  

make

52

bad

18

most

5

medicine

14

evidence-based

38

image

32

clear

15

  

France

1

  

this day

14

consumer

19

  

say

41

oily

18

simultaneously

5

head

13

Japanese people

38

experience

32

several (hiragana)

13

  

Brazil

1

  

daily

13

handicapped

19

  

get

38

delicious

16

never

4

book

13

company

37

job

32

new

11

  

Mali

1

  

all (hiragana)

11

certainty

18

  

vary

37

joyful

13

likewise

4

distinction

12

stress

34

realization

32

uneasiness

10

  

Muli

1

  

all

11

trace

16

  

concern

36

small

13

vaguely

4

example

12

food (colloquial style)

34

reference

31

complex

10

  

Europa

1

  

the first

10

phytochemical

15

  

investigate

34

deep

12

some degree

3

bottom

9

food

32

activity

30

wonder

9

  

Asian

1

  

fact

9

discipline

15

  

give

31

unconcerned

12

little more

3

hand

9

spice

31

relation

30

diverse

8

  

Arakawa

1

  

last week

9

significance

15

  

work

29

near

12

until now

3

heart

9

environment

30

change

30

various (hiragana)

7

  

Hong Kong

1

  

case

8

impressive

14

  

enjoy

28

great

12

indeed

3

meat

9

chance

27

agreement

29

simple

7

  

Kochi

1

  

everyday

8

malnutrition

14

  

go

28

sweet

10

quite

3

fish

8

liver

26

life style

28

nature

7

  

Sakado

1

  

a part

7

active

14

  

read

28

soft

10

lot of

3

chicken

8

child

26

existence

27

precise

7

  

Kagoshima

1

  

the whole

7

possibility

13

   

27

hard

9

naturally

3

skin

8

world

26

analysis

27

useful

7

  

Konaka

1

  

after that

6

Kono teacher

13

  

arise

27

low

9

apparently

2

salt

7

enzyme

24

education

26

complete

6

  

Ishikawa

1

  

recent years

6

children

13

  

based

25

thick

9

somehow

2

fire

7

specialty

24

statistics

26

weak point

6

  

Horanai

1

  

direct

6

myself

13

  

show

25

young

6

already

2

form

7