NLA Trial index

NLA Trial Articles from 1850

Notes
  1. Accuracy of OCR and overProof is measured in comparison with the human corrections. We know human corrections in this sample are incomplete, and themselves contain errors, but they are the best we could find automatically from the NLA newspapers corpus, tagged as completely corrected then further filtered to those with at least 3 corrections, at least 40% of lines corrected and lowest third percentage of non-dictionary words.
  2. Accuracy is measured by a separate process from that used to colour words in this output: the colouring process is heuristic, and not completely accurate.
  3. Colour legend:
    Text - OCR text corrected by human and/or overProof
    Text - human and/or overProof corrections
    Text - discrepencies between human and/or overProof
    Text - human corrections not applied by overProof
  4. Identified overProof corrections are calculated by the statistical calculation process, and shows those words changed by overProof which ALSO match human corrections. As human corrections are often wrong and incomplete, so too is this list.
  5. Identified overProof non-corrections are calculated by the statistical calculation process, and shows those words in the overProof output which DO NOT MATCH human corrections. As human corrections are often wrong and incomplete, so too is this list. Words marked as [**VANDALISED] are those which have been changed by overProof but not by the human correction; as before, a missed human correction will be (incorrectly) classified as vandalisation by overProof.
  6. Searchability of unique words refers to the distinct words in an article, and how many are present before and after correction. It is measure of how many of the words within an article could be used to find the article using a search engine.
  7. Weighted Words refers to a calculation in which common words count for little (a fraction of a word) and unusual words count for more, in proportion to the log of the inverse of their frequency in the corpus. It may be an indicator of how well distinctive words in an article can be searched before and after correction.

Article ID 690276, Article, To the Editor of the Maitland Mercury., page 3 1850-09-07, The Maitland Mercury and Hunter River General Advertiser (NSW : 1843 - 1893), 115 words, 4 corrections

Raw OCRHuman CorrectedoverProof Corrected
To the Editor of tlie Maitland Mercury. To the Editor of the Maitland Mercury. To the Editor of the Maitland Mercury.
Sir-In the lines published by you in your SIR—In the lines published by you in your SIR-In the lines published by you in your
last issue, "On the Death of William Words- last issue, "On the Death of William Words- last issue, "On the Death of William Words-
worth," there are several errors which mate- worth," there are several errors which mate- worth, there are several errors which materially
rially alter the sense ; they are as follows : rially alter the sense; they are as follows:— alter the sense ; they are as follows:
For " As the lonely midnight hour," read at. For "As the lonely midnight hour," read at. For " As the lonely midnight hour," read at.
For "characterised," read charactered. For "characterised," read charactered. For "characterised," read charactered.
For " And thou did st find hu- everywhere For "And thou did'st find her everywhere For " And thou did not find her- everywhere
"And all things that are bright and fair," read "And all things that are bright and fair," read "And all things that are bright and fair," read
In all things, <fcc. In all things, &c. In all things, for.
lastly, "Discordant woe," which is nonsense, should be Lastly, "Discordant woe," which is nonsense, should be lastly, "Discordant woe," which is nonsense, should be
Viscord and woe. Discord and woe. Viscord and woe.
Trusting that if you think it of any conse- Trusting that if you think it of any conse- Trusting that if you think it of any consequence
quence you will correct the above misprints in quence you will correct the above misprints in you will correct the above misprints in
yonr next issue your next issue your next issue
-I remain, yours obediently, —I remain, yours obediently, -I remain, yours obediently,
ROBERT WISDOM. ROBERT WISDOM. ROBERT WISDOM.
September 6th, 1850. September 6th, 1850. September 6th, 1850.
Identified overProof corrections INYOUR HER
Identified overProof non-corrections DIDST DISCORD
Word
count		OCR
accuracy %		overProof
accuracy %		Errors
corrected %
All Words10395.198.160.0
Searchability of unique words7594.797.350.0
Weighted Words94.897.450.0

Article ID 3712080, Family Notices, Family Notices, page 1 1850-05-18, The Moreton Bay Courier (Brisbane, Qld. : 1846 - 1861), 79 words, 10 corrections

Raw OCRHuman CorrectedoverProof Corrected
MARRIED. MARRIED, MARRIED.
By special license, on the 4th instant, by the By special license, on the 4th instant, by the By special license, on the 4th instant, by the
Rev. William Lightbody, Richard Henry Wright, Rev. William Lightbody, Richard Henry Wright, Rev. William Lightbody, Richard Henry Wright,
eldest son of Thomas M. Wright, Eaq., of New eldest son of Thomas M. Wright, Esq., of New eldest son of Thomas M. Wright, Esq., of New
England, to Isabella Langridge, eldest daughter England, to Isabella Langridge, eldest daughter England, to Isabella Langridge, eldest daughter
of J. S. Langridge, late ot London. of J. S. Langridge, late of London. of J. S. Langridge, late of London.
DIED» DIED, DIED
At the residence of T. G\ Breillat, Esq., New- At the residence of T. C. Breillat, Esq., New- At the residence of T. G Breillat, Esq., Newtown,
town, on the 3rd inst., at the age of twenty-ftve, town, on the 3rd inst., at the age of twenty-five, on the 3rd inst., at the age of twenty-five,
Charles, third son of the late Robert Graham, Charles, third son of the late Robert Graham, Charles, third son of the late Robert Graham,
Esq , M.D., Professor of Medicine and Botany, Esq., M.D., Professor of Medicine and Botany, Esq , M.D., Professor of Medicine and Botany,
in the University of Edinburgh. in the University of Edinburgh. in the University of Edinburgh.
Identified overProof corrections /TWENTY/FIVE|TWENTYFIVE
Identified overProof non-corrections
Word
count		OCR
accuracy %		overProof
accuracy %		Errors
corrected %
All Words6995.7100.0100.0
Searchability of unique words4597.8100.0100.0
Weighted Words97.4100.0100.0

Article ID 12917019, Family Notices, Family Notices, page 4 1850-04-11, The Sydney Morning Herald (NSW : 1842 - 1954), 107 words, 9 corrections

Raw OCRHuman CorrectedoverProof Corrected
I BIRTH. BIRTH. BIRTH.
, At Parramatt', the 9th instant, the lady of At Parramatta, the 9th instant, the lady of At Parramatta', the 9th instant, the lady of
i the Rev. James Coutts, ot a daughter, the Rev. James Coutts, of a daughter. the Rev. James Coutts, of a daughter,
MARRIED. MARRIED. MARRIED.
By special license, on the 19th instant, at By special license, on the 19th instant, at By special license, on the 19th instant, at
Ashfield Church, by the Rev. F. Wilkinson, Ashfield Church, by the Rev. F. Wilkinson, Ashfield Church, by the Rev. F. Wilkinson,
. 1 liornas Hyndes, Esq , of Cheshunt House, Thomas Hyndes, Esq., of Cheshunt House, . Thomas Hyndes, Esq of Cheshunt House,
I Cumberland-pla c, Sydney, to Lucy, Becond Cumberland-place, Sydney, to Lucy, second I Cumberland-place c, Sydney, to Lucy, second
daughter of the late Robert Havens, Esq , daughter of the late Robert Havens, Esq., daughter of the late Robert Havens, Esq ,
Surgeon, of Colchester, Essex, England. Surgeon, of Colchester, Essex, England. Surgeon, of Colchester, Essex, England.
DIED DIED. DIED
On the Glh instant, at his house, in Clyde On the 6th instant, at his house, in Clyde- On the 6th instant, at his house, in Clyde
street, .Miller s Point, greatly respected and street, Miller's Point, greatly respected and street, Miller s Point, greatly respected and
regretted, Mr. Ihotnus Holhwell, aged 58 regretted, Mr. Thomas Holliwell, aged 58 regretted, Mr. Thomas Holliwell, aged 58
years. years. years.
At 494, George Btreet, Sydney, on 10th At 494, George-street, Sydney, on 10th At 494, George Street, Sydney, on 10th
April, 1850, nged 20 months, Mary, youngest April, 1850, aged 20 months, Mary, youngest April, 1850, aged 20 months, Mary, youngest
child of Hugh Dixfion. tobacconist child of Hugh Dixson, tobacconist. child of Hugh Dixson. tobacconist
Identified overProof corrections DIXSON HOLLIWELL PARRAMATTA /CUMBERLAND/PLACE|CUMBERLANDPLACE THOMAS SECOND
Identified overProof non-corrections MILLERS
Word
count		OCR
accuracy %		overProof
accuracy %		Errors
corrected %
All Words8688.498.890.0
Searchability of unique words6088.398.385.7
Weighted Words87.398.285.6

Article ID 12922786, Article, DEPARTURES., page 2 1850-11-23, The Sydney Morning Herald (NSW : 1842 - 1954), 93 words, 5 corrections

Raw OCRHuman CorrectedoverProof Corrected
DEPARTURES. DEPARTURES. DEPARTURES.
-, November 22.-Juno, barque, 2'2 tons, November 22.—Juno, barque, 242 tons, -, November 22. June, barque, 212 tons,
Captain Orr, for the South Sea Islands. Pas- Captain Orr, for the South Sea Islands. Pas- Captain Orr, for the South Sea Islands. Pas-
sengers-Mr. T. W. Campbell, Master C. sengers—Mr. T. W. Campbell, Master C. sengers Mr. T. W. Campbell, Master C.
,. Campbell, Rev. M. Deurittet, Mr. P. Harvey. Campbell, Rev. M. Deurittet, Mr. P. Harvey. J. Campbell, Rev. M. Deurittet, Mr. P. Harvey.
" November 22.-Rebecca, brig, 227 tons, November 22.—Rebecca, brig, 227 tons, " November 22. Rebecca, brig, 227 tons,
Captain Simpson, for Moreton Bay,-Passen- Captain Simpson, for Moreton Bay,-- Passen- Captain Simpson, for Moreton Bay, Passen-
gers-Mrs. Simpson, Mr. E. Price. gers-- Mrs. Simpson, Mr. E. Price. gers-Mrs. Simpson, Mr. E. Price.
November 22.-Constantinople, barque, 317 November 22.-- Constantinople, barque, 317 November 22. Constantinople, barque, 317
tons, Captain Young, for Hokianga. tons, Captain Young, for Hokianga. tons, Captain Young, for Hokianga.
November 22.-Deborah, schooner, 121 tone, November 22.-- Deborah, schooner, 121 tons, November 22 Deborah, schooner, 121 tons,
Captain Chalk, for the South Sea Islands. Captain Chalk, for the South Sea Islands. Captain Chalk, for the South Sea Islands.
November 22.-Fhcobe, schooner, S9 tons, November 22.-- Phœbe, schooner, 89 tons, November 22. Phoebe, schooner, 89 tons,
Captain Nickson, for Melbourne. Passengers Captain Nickson, for Melbourne. Passengers Captain Nickson, for Melbourne. Passengers
-Mr. George Gnrnton, wife, and two children, -- Mr. George Garnton, wife, and two children, -Mr. George Gurton, wife, and two children,
Miss Keaney, Joseph Davison, H. Eavelin, J. Miss Keaney, Joseph Davison, H. Eavelin, J. Miss Reaney, Joseph Davison, H. Saverin, J.
Coffey, J. Spering. Coffey, J. Spering. Coffey, J. Sperring.
Identified overProof corrections PASSENGERS
Identified overProof non-corrections PHŒBE EAVELIN [**VANDALISED] KEANEY [**VANDALISED] SPERING [**VANDALISED] GARNTON MRS [**VANDALISED] JUNO [**VANDALISED]
Word
count		OCR
accuracy %		overProof
accuracy %		Errors
corrected %
All Words7789.688.3-12.5
Searchability of unique words4893.885.4-133.3
Weighted Words93.087.7-75.0

Accumulated stats for 4 articles from year 1850

Word
count		OCR
accuracy %		overProof
accuracy %		Errors
corrected %
All Words33592.296.453.9
Searchability of unique words22893.495.632.8
Weighted Words93.095.941.6