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Language analysis for the determination of origin

From Wikipedia, the free encyclopedia

Language analysis for the determination of origin (LADO) is an instrument used in asylum cases to determine the national or ethnic origin of the asylum seeker, through an evaluation of their language profile.[why?] To this end, an interview with the asylum seeker is recorded and analysed. The analysis consists of an examination of the dialectologically relevant features (e.g. accent, grammar, vocabulary and loanwords) in the speech of the asylum seeker. LADO is considered a type of speaker identification by forensic linguists.[1] LADO analyses are usually made at the request of government immigration/asylum bureaux attempting to verify asylum claims[how?], but may also be performed as part of the appeals process for claims which have been denied[why?]; they have frequently been the subject of appeals and litigation in several countries, e.g. Australia, the Netherlands and the UK.[why?]

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Transcription

In the last few videos, we saw that if we had n points, each of them have x and y-coordinates. Let me draw n of those points. So let's call this point one. It has coordinates x1, y1. You have the second point over here. It had coordinates x2, y2. And we keep putting points up here and eventually we get to the nth point. That has coordinates xn, yn. What we saw is that there is a line that we can find that minimizes the squared distance. This line right here, I'll call it y, is equal to mx plus b. There's some line that minimizes the square distance to the points. And let me just review what those squared distances are. Sometimes, it's called the squared error. So this is the error between the line and point one. So I'll call that error one. This is the error between the line and point two. We'll call this error two. This is the error between the line and point n. So if you wanted the total error, if you want the total squared error-- this is actually how we started off this whole discussion-- the total squared error between the points and the line, you literally just take the y value each point. So for example, you would take y1. That's this value right over here, you take y1 minus the y value at this point in the line. Well, that point in the line is, essentially, the y value you get when you substitute x1 into this equation. So I'll just substitute x1 into this equation. So minus m x1 plus b. This right here, that is the this y value right over here. That is m x1 b. I don't want to my get my graph too cluttered. So I'll just delete that there. That is error one right over there. And we want the squared errors between each of the points of the line. So that's the first one. Then you do the same thing for the second point. And we started our discussion this way. y2 minus m x2 plus b squared, all the way-- I'll do dot dot dot to show that there are a bunch of these that we have to do until we get to the nth point-- all the way to yn minus m xn plus b squared. And now that we actually know how to find these m's and b's, I showed you the formula. And in fact, we've proved the formula. We can find this line. And if we want to say, well, how much error is there? We can then calculate it. Because we now know the m's and the b's. So we can calculate it for certain set of data. Now, what I want to do is kind of come up with a more meaningful estimate of how good this line is fitting the data points that we have. And to do that, we're going to ask ourselves the question, what percentage of the variation in y is described by the variation in x? So let's think about this. How much of the total variation in y-- there's obviously variation in y. This y value is over here. This point's y value is over here. There is clearly a bunch of variation in the y. But how much of that is essentially described by the variation in x? Or described by the line? So let's think about that. First, let's think about what the total variation is. How much of the total variation in y? So let's just figure out what the total variation in y is. It's really just a tool for measuring. When we think about variation, and this is even true when we thought about variance, which was the mean variation in y. If you think about the squared distance from some central tendency, and the best central measure we can have of y is the arithmetic mean. So we could just say, the total variation in y is just going to be the sum of the distances of each of the y's. So you get y1 minus the mean of all the y's squared. Plus y2 minus the mean of all the y's squared. Plus, and you just keep going all the way to the nth y value. To yn minus the mean of all the y's squared. This gives you the total variation in y. You can just take out all the y values. Find their mean. It'll be some value, maybe it's right over here someplace. And so you can even visualize it the same way we visualized the squared error from the line. So if you visualize it, you can imagine a line that's y is equal to the mean of y. Which would look just like that. And what we're measuring over here, this error right over here, is the square of this distance right over here. Between this point vertically and this line. The second one is going to be this distance. Just right up to the line. And the nth one is going to be the distance from there all the way to the line right over there. And there are these other points in between. This is the total variation in y. Makes sense. If you divide this by n, you're going to get what we typically associate as the variance of y, which is kind of the average squared distance. Now, we have the total squared distance. So what we want to do is-- how much of the total variation in y is described by the variation in x? So maybe we can think of it this way. So our denominator, we want what percentage of the total variation in y? Let me write it this way. Let me call this the squared error from the average. Maybe I'll call this the squared error from the mean of y. And this is really the total variation in y. So let's put that as the denominator. The total variation in y, which is the squared error from the mean of the y's. Now we want to what percentage of this is described by the variation in x. Now, what is not described by the variation in x? We want to how much is described by the variation in x. But what if we want how much of the total variation is not described by the regression line? Well, we already have a measure for that. We have the squared error of the line. This tells us the square of the distances from each point to our line. So it is exactly this measure. It tells us how much of the total variation is not described by the regression line. So if you want to know what percentage of the total variation is not described by the regression line, it would just be the squared error of the line, because this is the total variation not described by the regression line, divided by the total variation. So let me make it clear. This, right over here, tells us what percentage of the total variation is not described by the variation in x. Or by the regression line. So to answer our question, what percentage is described by the variation? Well, the rest of it has to be described by the variation in x. Because our question is what percent of the total variation is described by the variation in x. This is the percentage that is not described. So if this number is 30%-- if 30% of the variation in y is not described by the line, then the remainder will be described by the line. So we could essentially just subtract this from 1. So if we take 1 minus the squared error between our data points and the line over the squared error between the y's and the mean y, this actually tells us what percentage of total variation is described by the line. You can either view it's described by the line or by the variation in x. And this number right here, this is called the coefficient of determination. It's just what statisticians have decided to name it. And it's also called R-squared. You might have even heard that term when people talk about regression. Now let's think about it. If the squared error of the line is really small what does that mean? It means that these errors, right over here, are really small. Which means that the line is a really good fit. So let me write it over here. If the squared error of the line is small, it tells us that the line is a good fit. Now, what would happen over here? Well, if this number is really small, this is going to be a very small fraction over here. 1 minus a very small fraction is going to be a number close to 1. So then, our R-squared will be close to 1, which tells us that a lot of the variation in y is described by the variation in x. Which makes sense, because the line is a good fit. You take the opposite case. If the squared error of the line is huge, then that means there's a lot of error between the data points and the line. So if this number is huge, then this number over here is going to be huge. Or it's going to be a percentage close to 1. And 1 minus that is going to be close to 0. And so if the squared error of the line is large, this whole thing's going to be close to 1. And if this whole thing is close to 1, the whole coefficient of determination, the whole R-squared, is going to be close to 0, which makes sense. That tells us that very little of the total variation in y is described by the variation in x, or described by the line. Well, anyway, everything I've been dealing with so far has been a little bit in the abstract. In the next video, we'll actually look at some data samples and calculate their regression line. And also calculate the R-squared, and see how good of a fit it really is.

Background

A number of established linguistic approaches are considered to be valid methods of conducting LADO, including language variation and change,[2][3] forensic phonetics,[4] dialectology, and language assessment.[5]

The underlying assumption leading to government immigration and asylum bureaux's use of LADO is that a link exists between a person's nationality and the way they speak.[why?] To linguists, this assumption is flawed: instead, research supports links between the family and community in which a person learns their native language, and enduring features of their way of speaking it. The notion that linguistic socialization into a speech community lies at the heart of LADO has been argued for by linguists since 2004,[6] and is now accepted by a range of government agencies (e.g. Switzerland,[7] Norway[8]), academic researchers (e.g. Eades 2009,[9] Fraser 2011,[10] Maryns 2006,[11] and Patrick 2013[12]), as well as some commercial agencies (e.g. De Taalstudio, according to Verrips 2010[13]).

Use

Since the mid-1990s, language analysis has been used to help determine the geographical origin of asylum seekers by the governments of a growing number of countries (Reath, 2004),[14] now including Australia, Austria, Belgium, Canada, Finland, Germany, the Netherlands, New Zealand, Norway, Sweden, Switzerland and the United Kingdom.

Pilots have been conducted by the UK, Ireland, and Norway.[15] The UK legitimised the process in 2003; it has subsequently been criticised by immigration lawyers (see response by the Immigration Law Practitioners' Association[16]), and also Craig 2012[17]); and social scientists (e.g. Campbell 2013[18]), as well as linguists (e.g. Patrick 2011[19]).

In the Netherlands LADO is commissioned by the Dutch Immigration Service (IND).[20] Language analysis is used by the IND in cases where asylum seekers cannot produce valid identification documents, and, in addition, the IND sees reason to doubt the claimed origin of the asylum seeker. The IND has a specialised unit (Bureau Land en Taal, or BLT; in English, the Office for Country Information and Language Analysis, or OCILA) that carries out these analyses. Challenges to BLT analyses are provided by De Taalstudio,[21] a private company that provides language analysis and contra-expertise in LADO cases. Claims and criticisms regarding the Dutch LADO processes are discussed by Cambier-Langeveld (2010),[22] the senior linguist for BLT/OCILA, and by Verrips 2010,[23] the founder of De Taalstudio. Zwaan (2008,[24] 2010[25]) reviews the legal situation.

LADO reports are provided to governments in a number of ways: by their own regularly-employed linguists and/or freelance analysts; by independent academic experts; by commercial firms; or by a mixture of the above. In Switzerland language analysis is carried out by LINGUA, a specialized unit of the Federal Office for Migration, which both employs linguists and retains independent experts from around the world.[7] The German and Austrian bureaux commission reports primarily from experts within their own countries. The UK and a number of other countries have commercial contracts with providers such as the Swedish firms Sprakab[26] and Verified [27] both of which have carried out language analyses for UK Visas and Immigration (formerly UK Border Agency) and for the Dutch Immigration Service, as well as other countries around the world.

Language analysts

It is widely agreed that language analysis should be done by language experts. Two basic types of practitioners commonly involved in LADO can be distinguished: trained native speakers of the language under analysis, and professional linguists specialized in the language under analysis. Usually native speaker analysts are free-lance employees who are said to be under the supervision of a qualified linguist. When such analysts lack academic training in linguistics, it has been questioned whether they should be accorded the status of 'experts' by asylum tribunals, e.g. by Patrick (2012),[28] who refers to them instead as "non-expert native speakers (NENSs)". Eades et al. (2003) note that "people who have studied linguistics to professional levels [...] have particular knowledge which is not available to either ordinary speakers or specialists in other disciplines".[29] Likewise Dikker and Verrips (2004)[30] conclude that native speakers who lack training in linguistics are not able to formulate reliable conclusions regarding the origin of other speakers of their language. The nature of the training which commercial firms and government bureaux provide to their analysts has been questioned in academic and legal arenas, but few specifics have been provided to date; see however accounts by the Swiss agency Lingua[31] and Cambier-Langeveld of BLT/OCILA,[32] as well as responses to the latter by Fraser [33] and Verrips.[34]

Claims for and against the use of such native-speaker analysts, and their ability to conduct LADO satisfactorily vis-a-vis the ability of academically trained linguists, have only recently begun to be the subject of research (e.g. Wilson 2009),[35] and no consensus yet exists among linguists. While much linguistic research exists on the ability of people, including trained linguists and phoneticians and untrained native speakers, to correctly perceive, identify or label recorded speech that is played to them, almost none of the research has yet been framed in such a way that it can give clear answers to questions about the LADO context.

Litigation

The matter of native-speaker analysts and many other issues are subjects of ongoing litigation in asylum tribunals and appeals courts in several countries. Vedsted Hansen (2010[36]) describes the Danish situation, Noll (2010[37]) comments on Sweden, and Zwaan (2010) reviews the Dutch situation.

In the UK, a 2010 Upper Tribunal (asylum) case known as 'RB',[38] supported by a 2012 Court of Appeal decision,[39] argue for giving considerable weight to LADO reports carried out by the methodology of native-speaker analyst plus supervising linguist. In contrast, a 2013 Scottish Court of Sessions decision known as M.Ab.N+K.A.S.Y.[40] found that all such reports must be weighed against the standard Practice Directions for expert reports. Lawyers in the latter case have argued that "What matters is the lack of qualification",[41] and since the Scottish court has equal standing to the England and Wales Appeals Court, the UK Supreme Court was petitioned to address the issues. On 5–6 March 2014, the UK Supreme Court [42] heard an appeal[43] brought by the Home Office concerning the nature of expert linguistic evidence provided to the Home Office in asylum cases, whether expert witness should be granted anonymity, the weight that should be given to reports by the Swedish firm Sprakab, and related matters.

Criticism

Some methods of language analysis in asylum procedures have been heavily criticized by many linguists (e.g., Eades et al. 2003;[44] Arends, 2003). Proponents of the use of native-speaker analysts agree that "[earlier] LADO reports were not very satisfactory from a linguistic point of view... [while even] today's reports are still not likely to satisfy the average academic linguist".[45] Following an item on the Dutch public radio programme Argos, member of parliament De Wit of the Socialist Party presented a number of questions to the State Secretary of the Ministry of Justice regarding the reliability of LADO. The questions and the responses by the State Secretary can be found here.[46]

See also

References

  1. ^ Peter M. Tiersma & Lawrence M. Solan (eds.), The Oxford Handbook of Language and Law. Oxford: Oxford University Press, p. 531.
  2. ^ Patrick, Peter L. (2010). 'Language variation and LADO (Language Analysis for Determination of Origin).' In K Zwaan, P Muysken & M Verrips, eds., Language and Origin. The role of language in European asylum procedures: A linguistic and legal survey, pp73-87. Nijmegen: Wolf Legal Publishers.
  3. ^ JK Chambers, Peter Trudgill and Natalie Schilling-Estes, eds. (2002). The Handbook of Language Variation and Change. Oxford: Blackwell.
  4. ^ Moosmüller, Sylvia. (2010). 'IAFPA position on language analysis in asylum procedures.' In K Zwaan, P Muysken & M Verrips, eds., Language and Origin. The Role of Language in European Asylum Procedures: A Linguistic and Legal Survey, pp. 43–47. Nijmegen: Wolf Legal Publishers.
  5. ^ McNamara, Tim & Carsten Roever. (2006). Language testing: The social dimension. Oxford: Blackwell.
  6. ^ Language and National Origin Group. (2004). 'Guidelines for the Use of Language Analysis in relation to Questions of National Origin in Refugee Cases'. The International Journal of Speech, Language and the Law 11(2): 261–266.
  7. ^ a b Baltisberger, Eric & Priska Hubbuch. (2010). 'LADO with specialized linguists: The development of Lingua's working method.' In K Zwaan, P Muysken & M Verrips, eds., Language and Origin. The Role of Language in European Asylum Procedures: A Linguistic and Legal Survey, pp9-19. Nijmegen: Wolf Legal Publishers.
  8. ^ UDI 2009. 'Specified requirements for language analysis for the Norwegian Immigration Administration.' Oslo: Utlendingsdirektoratet, July 2009
  9. ^ Eades, Diana. (2009). 'Testing the claims of asylum seekers: The role of language analysis.' Language Assessment Quarterly 6: 30–40.
  10. ^ Fraser, Helen. 2011. 'Language analysis for the determination of origin (LADO).' In C. A. Chapelle (Ed.), Encyclopedia of Applied Linguistics. Wiley-Blackwell.
  11. ^ Maryns, Katrijn. 2006. The asylum speaker: Language in the Belgian asylum procedure. Manchester: St. Jerome.
  12. ^ Patrick, Peter L. (2013.) 'Asylum and language analysis.' In Susan K Brown & Frank D Bean (eds.), Encyclopedia of Migration. Heidelberg: Springer Verlag.
  13. ^ Verrips, Maaike. (2010). 'Language analysis and contra-expertise in the Dutch asylum procedure.' International Journal of Speech, Language & the Law 17(2): 279–294.
  14. ^ Reath, A. (2004). 'Language analysis in the context of the asylum process: Procedures, validity, and consequences.' Language Assessment Quarterly: 1–4, 209–233.
  15. ^ UDI 2009. 'Specified requirements for language analysis for the Norwegian Immigration Administration.' Oslo: Utlendingsdirektoratet, July 2009. https://www.udiregelverk.no/Global/Images/Rettskilder/Rundskriv/RS%202011%20023/RS%202011%20023V5.pdf
  16. ^ IPA April 2009. 'Response to the UK Border Agency "NAM+ Asylum Programme" presentation to the National Asylum Stakeholder Forum (NASF) on 19 March 2009' http://www.docstoc.com/docs/44362029/Response-to-the-UK-Border-Agency-NAM-Asylum-Programme
  17. ^ Craig, Sarah. 2012. The use of language in asylum decision-making in the UK – a discussion. Journal of Immigration, Asylum and Nationality Law 26(3): 255–268. Oxford University Press: Westlaw.
  18. ^ Campbell, John. (2013.) 'Language analysis in the United Kingdom's Refugee Status Determination system: Seeing through policy claims about 'expert knowledge'.' Ethnic and Racial Studies 36(4): 670–690.
  19. ^ Patrick, Peter L. (2011.) 'Key problems in language analysis for the determination of origin.' Plenary address to the International Association of Forensic Linguistics 10th Biennial conference at Aston University (July 2011). http://privatewww.essex.ac.uk/~patrickp/papers/IAFL10plenary_July2011.pdf
  20. ^ "Taalanalyse | Immigratie- en Naturalisatiedienst". www.ind.nl. Archived from the original on 2013-04-07.
  21. ^ "Language Analysis for determining origin". www.taalstudio.nl.
  22. ^ Cambier-Langeveld, T. (2010.) 'The validity of language analysis in the Netherlands.' In K Zwaan, P Muysken & M Verrips, eds., Language and Origin. The Role of Language in European Asylum Procedures: A Linguistic and Legal Survey, pp. 21–33. Nijmegen: Wolf Legal Publishers.
  23. ^ Verrips, Maaike. (2010.) 'Language analysis and contra-expertise in the Dutch asylum procedure.' International Journal of Speech, Language & the Law 17(2): 279–294.
  24. ^ Zwaan, Karin (ed). (2008). De taalanalyse in de Nederlandse asielprocedure. Een juridische en linguïstische verkenning. Nijmegen: Wolf Legal Publishers.
  25. ^ Zwaan, Karin. (2010.) 'Dutch court decisions and language analysis for the determination of origin.' In K Zwaan, P Muysken & M Verrips, eds., Language and Origin. The Role of Language in European Asylum Procedures: A Linguistic and Legal Survey, pp. 43–47. Nijmegen: Wolf Legal Publishers.
  26. ^ "Home". Sprakab.se. Retrieved 2013-10-07.
  27. ^ "Verified AB – Language Analyses, Dialect Identification, Linguistic Expertise". Verified.se. Retrieved 2013-10-07.
  28. ^ Patrick, Peter L. (2012.) 'Language analysis for determination of origin: Objective evidence for refugee status determination.' Chapter 38 in Peter M. Tiersma & Lawrence M. Solan (eds.), The Oxford Handbook of Language and Law. Oxford: Oxford University Press, p. 544
  29. ^ Eades, D., H. Fraser, J. Siegel, T. McNamara & B. Baker. (2003.) 'Linguistic identification in the determination of nationality: A preliminary report.' Language Policy 2: 179–199.
  30. ^ Dikker, S. & Verrips, M. (2004.) 'Taalanalyse: een vak apart.' Onderzoeksrapport. Monnickendam: De Taalstudio.
  31. ^ Baltisberger, Eric & Priska Hubbuch. (2010.) 'LADO with specialized linguists: The development of Lingua's working method.' In K Zwaan, P Muysken & M Verrips, eds., Language and Origin. The Role of Language in European Asylum Procedures: A Linguistic and Legal Survey, pp9-19. Nijmegen: Wolf Legal Publishers.
  32. ^ Cambier-Langeveld, T. (2010.) 'The role of linguists and native speakers in language analysis for the determination of speaker origin.' International Journal of Speech, Language & the Law 17(1): 67–93
  33. ^ Fraser, Helen. (2011.) 'The role of linguists and native speakers in language analysis for the determination of speaker origin: A response to Tina Cambier-Langeveld.' International Journal of Speech, Language & the Law 18(1): 121–130.
  34. ^ Verrips, Maaike. (2011.) 'LADO and the pressure to draw strong conclusions: A response to Tina Cambier-Langeveld.' International Journal of Speech, Language & the Law 18(1): 131–143.
  35. ^ Wilson, Kim. (2009.) 'Language analysis for the determination of origin: Native speakers vs. trained linguists.' MSc dissertation in Linguistics, University of York
  36. ^ Vedsted Hansen, Jens. 2010. 'The use of language analysis in the Danish asylum procedure.' In K Zwaan, P Muysken & M Verrips, eds., Language and Origin. The Role of Language in European Asylum Procedures: A Linguistic and Legal Survey, pp. 199–207. Nijmegen: Wolf Legal Publishers.
  37. ^ Noll, Gregor. 2010. 'The 2007 rejection of anonymous language analysis by the Swedish Migration Court of Appeal: A precedent?' In K Zwaan, P Muysken & M Verrips, eds., Language and Origin. The Role of Language in European Asylum Procedures: A Linguistic and Legal Survey, pp. 211–213. Nijmegen: Wolf Legal Publishers.
  38. ^ RB (Linguistic evidence Sprakab) Somalia [2010] UKUT 329 (IAC) (15 September 2010), http://www.bailii.org/uk/cases/UKUT/IAC/2010/00329_ukut_iac_2010_rb_somalia.html
  39. ^ RB (Somalia) v Secretary of State for the Home Department [2012] EWCA Civ 277 (13 March 2012), http://www.bailii.org/cgi-bin/markup.cgi?doc=/ew/cases/EWCA/Civ/2012/277.html&query=rb+and+somalia&method=boolean
  40. ^ M.Ab.N. & K.A.S.Y. v SSHD [2013] CSIH 68, http://www.scotcourts.gov.uk/opinions/2013CSIH68.html
  41. ^ Bryce, Joseph. Free Movement blog, 24 July 2013. 'Court of Sessions rules on linguistic analysis.' http://www.freemovement.org.uk/2013/07/24/court-of-session-rules-on-linguistic-analysis/
  42. ^ UK Supreme Court. http://www.supremecourt.uk/
  43. ^ UKSC 2012/0202. "Secretary of State for Home Department (Appellants) v MN and KY (Respondents) (Scotland) - the Supreme Court". Archived from the original on 2014-04-07. Retrieved 2014-04-05.
  44. ^ Eades, Diana & Jacques Arends, eds. (2004). Language Analysis and Determination of Nationality. In International Journal of Speech, Language & the Law: Forensic Linguistics, 11(2): 179–266.
  45. ^ Cambier-Langeveld, T. (2012.) 'Clarification of the issues in language analysis: A rejoinder to Fraser and Verrips.' International Journal of Speech, Language & the Law 19(1): 95, 108, p. 104.
  46. ^ "Ministerie van Veiligheid en Justitie | Rijksoverheid.nl" (PDF). Justitie.nl. 1995-04-30. Retrieved 2013-10-07.

Further reading

  • Fraser, Helen. (2011.) 'Language analysis for the determination of origin (LADO).' In C. A. Chapelle (Ed.), Encyclopedia of Applied Linguistics. Wiley-Blackwell.
  • Language and National Origin Group. (2004.) 'Guidelines for the use of language analysis in relation to questions of national origin in refugee cases.' International Journal of Speech, Language & the Law 11(2): 261–66. Available at UNHCR RefWorld Refworld | Guidelines for the use of language analysis in relation to questions of national origin in refugee cases
  • Patrick, Peter L. (2012) 'Language analysis for determination of origin: Objective evidence for refugee status determination.' Chapter 38 in Peter M. Tiersma & Lawrence M. Solan (eds.), The Oxford Handbook of Language and Law. Oxford: Oxford University Press, 533–546.
  • Patrick, Peter L., Monika S. Schmid & Karin Zwaan (eds.). (2019.) Language Analysis for the Determination of Origin. Berlin: Springer.
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