LEXICAL EXTRACTION

In order to create a corpus map, we need to first select a set of lexical sequences to model the text with, as well as a label to represent each of the lexical sequences in the map.

The label can be the sequence itself as found in the corpus, or a normalized version that is easier to read or that abstracts away from variatbility in the way to refer to the "concept" expressed by a set of sequences. For instance, we may label the singular and plural form of a sequence with the singular, or the past tense of a verb with the infinitive, and so on.

We used two methods for lexical extraction. The first method, explained on tab 1 below, is based on Entity Linking to DBpedia. The second method is keyphrase extraction with the Yatea tool, and is described below here.

Keyphrases are important terms in a corpus. To identify them, we used the Yatea tool. Keyphrase extraction is sometimes used to get an overview of a corpus.

Unlike for lexical extraction based on Entity Linking, where a set of lexical items was normalized to a label to represent the set, for keyphrase-based extraction no such normalization was performed. We could say that each keyphrase is used as "its own label".

Keyphrases
absolute monarchy	english lawyers	litigation	public functionary
act of parliament	english practice	logic	public interest
adam smith	evidence	lord chancellor	public mind
aggregate mass	evil	lord president	public opinion
american united states	exchequer bills	lords delegates	public opinion tribunal
anglo-american united states	external instruments of felicity	majesty	public spirit
annuity	factitious causes	majority of the people	pure monarchy
appropriate active talent	factitious delay	man	quantity of money
appropriate aptitude	factitious honor	marginal insertion	quantity of time
appropriate moral aptitude	factitious reward	mass of money	question of fact
arbitrary power	failure of justice	matter of corruption	question of law
author of the acts	female sex	members	radical reform
bank paper	fictitious entities	men of law	rate of interest
bentham esq	fictitious entity	military force	real evidence
bill	fide appeals	mischief	real law
body of men	fide defendant	mixt monarchy	real wealth
body of the law	fide suitor	mode of procedure	reform
body of the people	field of law	mode of voting	reign
breach of trust	field of legislation	monarch	relation
british constitution	forms of government	money	religion
business of government	forthcomingness	moral sanction	religion of jesus
case	freedom of suffrage	national wealth	review chamber
case admitts	general interest	natural causes	rise of prices
cause	general rule	natural procedure	rule of action
circumstantial evidence	great britain	natural system	scotch law
civil war	greater number	nature of man	secrecy of suffrage
common interest	greatest happiness	nature of the case	secret mode
common sense	greatest number	new south wales	securities
commons house	hands of the judge	non agenda	security
community	holy ghost	number	self-regarding interest
constituted authorities	house of commons	number of individuals	separate interest
constitution	human beings	number of the members	side of the cause
constitutional law	human breast	number of the persons	single hand
constitutive power	human happiness	official establishment	single individual
corrupt dependence	human mind	open mode	single person
corruption	individual	operative power	single word
corruptive influence	individual case	original draught	sinister end
country	individual instance	paul	sinister influence
court	individual occasion	penitentiary house	social affection
court of justice	influence	person	species of evidence
defendant	influence of understanding	plaintiff	standard of rectitude
degree	influence of will	pleasure	state of dependence
delay vexation	inner house	point of fact	statute law
difficulty	instruments of felicity	political community	statutory law
direct evidence	interest of the people	political power	substantive branch of the law
distant dependencies	interest of the ruling	political state	sum of money
division of power	interest of the subject	population	supreme operative
doctrine	jeremy bentham	power	supreme operative power
efficient cause	judge	powers of government	system of pleading
efficient causes	judicial establishment	presence of the judge	system of procedure
election	judicial injustice	principal fact	theory
election district	judicial procedure	principle of utility	tothill fields
election districts	jurisprudential law	private interest	ultramarian provinces
elector	justice	probative force	universality
encrease of wealth	language	profit	unwritten law
end of government	law	proper end	vast majority
end of justice	legislative power	proper end of government	vices
ends of judicature	legislator	proportion	westminster hall
english constitution	limited monarchy	public discussion	work
english jurisprudence	line of conduct	public functionaries	written evidence