title: Evolutionary data selection for enhancing models of intraday forex time series

authors: Mayo, Michael

subjects: intraday

abstract: The hypothesis in this paper is that a significant amount of intraday market data is either noise or redundant, and that if it is eliminated, then predictive models built using the remaining intraday data will be more accurate. To test this hypothesis, we use an evolutionary method (called Evolutionary Data Selection, EDS) to selectively remove out portions of training data that is to be made available to an intraday market predictor. After performing experiments in which data-selected and non-data-selected versions of the same predictive models are compared, it is shown that EDS is effective and does indeed boost predictor accuracy. It is also shown in the paper that building multiple models using EDS and placing them into an ensemble further increases performance. The datasets for evaluation are large intraday forex time series, specifically series from the EUR/USD, the USD/JPY and the EUR/JPY markets, and predictive models for two primary tasks per market are built: intraday return prediction and intraday volatility prediction.

text: Evolutionary data selection for enhancing models of intraday forex time series The hypothesis in this paper is that a significant amount of intraday market data is either noise or redundant, and that if it is eliminated, then predictive models built using the remaining intraday data will be more accurate. To test this hypothesis, we use an evolutionary method (called Evolutionary Data Selection, EDS) to selectively remove out portions of training data that is to be made available to an intraday market predictor. After performing experiments in which data-selected and non-data-selected versions of the same predictive models are compared, it is shown that EDS is effective and does indeed boost predictor accuracy. It is also shown in the paper that building multiple models using EDS and placing them into an ensemble further increases performance. The datasets for evaluation are large intraday forex time series, specifically series from the EUR/USD, the USD/JPY and the EUR/JPY markets, and predictive models for two primary tasks per market are built: intraday return prediction and intraday volatility prediction.

year: 2012

title: The demographic forces shaping New Zealand’s future. What population ageing [really] means

authors: Jackson, Natalie

subjects: demography

abstract: This paper outlines the key demographic forces shaping New Zealand’s future. It ranges broadly across birth rates, life expectancy and migration to show how this converging demography will result in a regionally-disparate future. It identifies a migration-driven bite in New Zealand’s age structure across the young adult ages that is pronounced in non-urban areas, and argues that while rural regions have long lost young adults and sun-belt regions gained older, what differs is that this phenomenon is now occurring alongside population ageing, rendering such age structures no longer conducive to growth. The converging trends will not only make responding to baby boomer retirement more difficult but will increase competition for workers and push up labour and consumption costs. With the exception of larger urban areas and some retirement zones, it shows that sub national growth in much of New Zealand has already ended and that this scenario will continue to unfold until zero growth or population decline embraces all but the major urban areas. This is despite a national growth rate which is currently near equal the annual global growth rate. The paper posits that it is time to re-evaluate the question ‘when does population growth ‘end’?’

text: The demographic forces shaping New Zealand’s future. What population ageing [really] means This paper outlines the key demographic forces shaping New Zealand’s future. It ranges broadly across birth rates, life expectancy and migration to show how this converging demography will result in a regionally-disparate future. It identifies a migration-driven bite in New Zealand’s age structure across the young adult ages that is pronounced in non-urban areas, and argues that while rural regions have long lost young adults and sun-belt regions gained older, what differs is that this phenomenon is now occurring alongside population ageing, rendering such age structures no longer conducive to growth. The converging trends will not only make responding to baby boomer retirement more difficult but will increase competition for workers and push up labour and consumption costs. With the exception of larger urban areas and some retirement zones, it shows that sub national growth in much of New Zealand has already ended and that this scenario will continue to unfold until zero growth or population decline embraces all but the major urban areas. This is despite a national growth rate which is currently near equal the annual global growth rate. The paper posits that it is time to re-evaluate the question ‘when does population growth ‘end’?’

year: 2011-05

title: He hekenga toto, he hekenga tōtā, he hekenga roimata.

authors: Mikaere, Te Maharanui Jacob

abstract: Ariā
Ko tā te tuhinga nei he whakakite i ngā āwangawanga o te kaituhi mō te maha o te hunga taiohi kua tipu mai i raro i te ātaarangi o te Kōhanga Reo, o te Kura Kaupapa Māori, o te wharekura hoki, kua noho ko te reo Māori hei reo tuatahi, engari mō te aronui ki te reo me tōna katoa kore kore rawa atu. Kei te kōrerohia ōna hītori me tōna whakapapa. I ahu mai tō tāua reo i hea? I pēhea tō tāua reo i ngā wā o mua? I pēhea tō tāua reo i te taetanga mai o tauiwi i te takiwā o te 1800? I ahatia tō tāua reo e tauiwi i tērā rautau i kīa ake he reo koretake noa te reo Māori? Nā wai tō tāua reo i ruke ki rāhaki i ngā tau 1900? Ka mutu, nā wai tō tāua reo i whakahoki mai ki te kōpū o tēnei whakatipuranga? Nā ēnei tūmomo urupounamu au i karanga ki te ihi o tōku whare kōrero. 
Ko te ngako o ngā kōrero o roto i te tuhinga nei he whakatewhatewha, he matapaki i te kūare o te hunga taiohi ki te whakapapa, ki te hītori o te reo Māori. Koia ko ōna piki me ōna heke, ngā whakapātaritari i ngana ki te whakapoko i te ahi o te reo Māori i te tata whāngaromanga ōna. Ko te nuinga o ngā kōrero he mea rangahau mai i ngā pukapuka me te whakatakoto i ngā kitenga hei pānuitanga mā te hunga e tāpara ana ki ngā kai o roto. Me whakanui ka tika ngā pēhitanga o te hunga i takatakahi i te ara papatoiake hei whaitanga mā tātau ka tahi, ka rua me kōkuhu ēnei tūmomo mātauranga ki ngā marau whakaako tamariki me kore noa e tahuri mai te hunga taiohi ki tōna reo me tōna katoa. E ora ai te whakapapa o te reo me ōna hītori me whakakōpā e tātau  tōna whakapapa, me ōna kōrero ki ngā tamariki kōhanga mai, kura kaupapa mai, wharekura mai, ā huri atu ki ngā pia whare wānanga hoki. Mā te whakaako i te hītori ki a ngāi taiohi ākene pea ka tipu te kauanuanu ki tōna reo. Kia kekeno atu au ki tōku reanga kei te kitea he momo whakahīhī kua puea ake ai ki roto tonu i a tātau. Ko te momo o tēnei whakahīhī he mea tūkino i te hunga kore reo, he mea whakaiti i ngā tāngata kua noho rehurehu ki ngā kawenga a tāua te Māori. E whakapono ana au mā te kauanuanu o tōku reanga ki tōna reo ka tipu hoki te kauanuanu ki te hunga kāore pea i rongo i ngā hua o te reo, rātau te hunga kua noho pōhara, kua noho manene nā ngā rā pōkākā o te whakapākehātanga. Atu i te whakahīhī o te ngākau kua puea hoki tētahi momo e patu nei i te kōrerotanga o tō tātau reo, arā ake ko te ngākau māngere. I te korenga o te aronui o tōku reanga ki te reo kua tipu ake ētahi, ahakoa i pakeke mai i roto i te Kōhanga Reo mō te kōrero Māori atu kia pakeke ana rātau he aha te aha. Mā te ako i ngā hītori o tō tātau reo e titi ai ki te whatu manawa te hiranga o tō tātau reo, mā tērā e kore rawa te tangata e noho hāneanea me te pōhēhē ka pai noa te reo Māori, ka mutu kāore he tino take kia kaha kōrerotia. 
Ko te tino whāinga o tēnei tuhinga he ngana ki te whakarārangi mai ko hea te huarahi e tuwhera ai ngā kuaha o te ao Māori ki te katoa e tū rangatira ai tātau. Ahakoa pakeke mai taiohi mai rānei, ahakoa matatau ki te reo tauhou ki te reo rānei ko te mea nui kia tū whakahīhī, kia tū māia te iwi Māori ki raurangi.

text: He hekenga toto, he hekenga tōtā, he hekenga roimata. Ariā
Ko tā te tuhinga nei he whakakite i ngā āwangawanga o te kaituhi mō te maha o te hunga taiohi kua tipu mai i raro i te ātaarangi o te Kōhanga Reo, o te Kura Kaupapa Māori, o te wharekura hoki, kua noho ko te reo Māori hei reo tuatahi, engari mō te aronui ki te reo me tōna katoa kore kore rawa atu. Kei te kōrerohia ōna hītori me tōna whakapapa. I ahu mai tō tāua reo i hea? I pēhea tō tāua reo i ngā wā o mua? I pēhea tō tāua reo i te taetanga mai o tauiwi i te takiwā o te 1800? I ahatia tō tāua reo e tauiwi i tērā rautau i kīa ake he reo koretake noa te reo Māori? Nā wai tō tāua reo i ruke ki rāhaki i ngā tau 1900? Ka mutu, nā wai tō tāua reo i whakahoki mai ki te kōpū o tēnei whakatipuranga? Nā ēnei tūmomo urupounamu au i karanga ki te ihi o tōku whare kōrero. 
Ko te ngako o ngā kōrero o roto i te tuhinga nei he whakatewhatewha, he matapaki i te kūare o te hunga taiohi ki te whakapapa, ki te hītori o te reo Māori. Koia ko ōna piki me ōna heke, ngā whakapātaritari i ngana ki te whakapoko i te ahi o te reo Māori i te tata whāngaromanga ōna. Ko te nuinga o ngā kōrero he mea rangahau mai i ngā pukapuka me te whakatakoto i ngā kitenga hei pānuitanga mā te hunga e tāpara ana ki ngā kai o roto. Me whakanui ka tika ngā pēhitanga o te hunga i takatakahi i te ara papatoiake hei whaitanga mā tātau ka tahi, ka rua me kōkuhu ēnei tūmomo mātauranga ki ngā marau whakaako tamariki me kore noa e tahuri mai te hunga taiohi ki tōna reo me tōna katoa. E ora ai te whakapapa o te reo me ōna hītori me whakakōpā e tātau  tōna whakapapa, me ōna kōrero ki ngā tamariki kōhanga mai, kura kaupapa mai, wharekura mai, ā huri atu ki ngā pia whare wānanga hoki. Mā te whakaako i te hītori ki a ngāi taiohi ākene pea ka tipu te kauanuanu ki tōna reo. Kia kekeno atu au ki tōku reanga kei te kitea he momo whakahīhī kua puea ake ai ki roto tonu i a tātau. Ko te momo o tēnei whakahīhī he mea tūkino i te hunga kore reo, he mea whakaiti i ngā tāngata kua noho rehurehu ki ngā kawenga a tāua te Māori. E whakapono ana au mā te kauanuanu o tōku reanga ki tōna reo ka tipu hoki te kauanuanu ki te hunga kāore pea i rongo i ngā hua o te reo, rātau te hunga kua noho pōhara, kua noho manene nā ngā rā pōkākā o te whakapākehātanga. Atu i te whakahīhī o te ngākau kua puea hoki tētahi momo e patu nei i te kōrerotanga o tō tātau reo, arā ake ko te ngākau māngere. I te korenga o te aronui o tōku reanga ki te reo kua tipu ake ētahi, ahakoa i pakeke mai i roto i te Kōhanga Reo mō te kōrero Māori atu kia pakeke ana rātau he aha te aha. Mā te ako i ngā hītori o tō tātau reo e titi ai ki te whatu manawa te hiranga o tō tātau reo, mā tērā e kore rawa te tangata e noho hāneanea me te pōhēhē ka pai noa te reo Māori, ka mutu kāore he tino take kia kaha kōrerotia. 
Ko te tino whāinga o tēnei tuhinga he ngana ki te whakarārangi mai ko hea te huarahi e tuwhera ai ngā kuaha o te ao Māori ki te katoa e tū rangatira ai tātau. Ahakoa pakeke mai taiohi mai rānei, ahakoa matatau ki te reo tauhou ki te reo rānei ko te mea nui kia tū whakahīhī, kia tū māia te iwi Māori ki raurangi.

year: 2016