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Table 3 Groups of word types as topics. Upper table: the 20 most frequent words in the 12 topics (word groups) found in the consensus partition of the Hyperlink + Text model. Lower table: the topic proportion (8) of the four groups of documents

From: Multilayer networks for text analysis with multiple data types

Group

Topic 1

Topic 2

Topic 3

Topic 4

Topic 5

Topic 6

Topic 7

Topic 8

Topic 9

Topic 10

Topic 11

Topic 12

 

occur

chemical

protein

one

system

group

transform

action

happen

quantum

every

factor

 

specific

loop

cell

also

time

space

law

translation

frequency

equation

basis

expression

 

within

electron

site

use

state

define

critical

class

fast

transformation

unique

region

 

process

transition

activity

form

work

field

magnetic

line

output

theorem

degree

molecular

 

produce

chemistry

pathway

function

second

point

matter

measure

input

symmetry

positive

sequence

 

increase

atom

cellular

give

effect

theory

scale

central

algorithm

dimension

open

information

 

mechanism

stable

organism

two

phase

value

plane

primary

digital

denote

close

end

 

cause

ion

amino

may

interaction

product

spectrum

unknown

 

classical

fix

molecule

 

acid

pattern

enzyme

however

potential

constant

volume

interior

 

let

reference

domain

 

target

crystal

synthesis

example

could

vector

temperature

surface

 

mechanic

exact

signal

 

step

reach

species

result

derive

physic

axis

side

 

coordinate

closed

alternative

 

bind

prediction

tissue

call

difference

physical

statistical

center

 

lie

restrict

bond

 

gene

label

proteins

first

full

energy

sign

flow

 

real

picture

family

 

control

compound

cancer

different

free

element

effective

copy

 

mathematics

infinitesimal

interact

 

human

reaction

activate

know

hold

particle

symbol

block

 

geometry

index

cycle

 

encode

crystallography

genetic

make

observe

parameter

speed

configuration

 

operator

interpretation

biological

 

body

oxygen

membrane

number

research

whose

electric

read

 

differential

formulate

life

 

dna

solid

release

structure

propose

mathematical

equilibrium

alternate

 

representation

equivalently

translate

 

rate

unstable

mutation

show

year

linear

unchanged

table

 

invariant

maximal

structural

 

formation

atomic

regulation

include

paper

matrix

assumption

transport

 

generalize

scheme

biology

1 (Mathematics)

0.1481

0.0213

0.0444

0.400

0.0578

0.0722

0.0510

0.0127

0.00163

0.147

0.0105

0.0338

2 (Physics)

0.138

0.0409

0.0291

0.404

0.0643

0.0710

0.07940

0.0127

0.0009583

0.105

0.0102

0.0445

3 (Biology)

0.297

0.0234

0.0536

0.351

0.0673

0.0426

0.0313

0.0121

0.00166

0.0347

0.00929

0.0759

4 (New Group)

0.107

0.0342

0.0355

0.405

0.0771

0.0728

0.0895

0.0122

0.00156

0.112

0.0113

0.0428