title: Searching for patterns in political event sequences: Experiments with the KEDs database

authors: Kovar, Klaus

subjects: computer science

abstract: This paper presents an empirical study on the possibility of discovering interesting event sequences and sequential rules in a large database of international political events. A data mining algorithm first presented by Mannila and Toivonen (1996), has been implemented and extended, which is able to search for generalized episodes in such event databases. Experiments conducted with this algorithm on the Kansas Event Data System (KEDS) database, an event data set covering interactions between countries in the Persian Gulf region, are described. Some qualitative and quantitative results are reported, and experiences with strategies for reducing the problem complexity and focusing on the search on interesting subsets of events are described.

text: Searching for patterns in political event sequences: Experiments with the KEDs database This paper presents an empirical study on the possibility of discovering interesting event sequences and sequential rules in a large database of international political events. A data mining algorithm first presented by Mannila and Toivonen (1996), has been implemented and extended, which is able to search for generalized episodes in such event databases. Experiments conducted with this algorithm on the Kansas Event Data System (KEDS) database, an event data set covering interactions between countries in the Persian Gulf region, are described. Some qualitative and quantitative results are reported, and experiences with strategies for reducing the problem complexity and focusing on the search on interesting subsets of events are described.

year: 2000

title: An Investigation of Catania's Concept of the Operant

authors: Cotton, Maree Louise

subjects: Response class

abstract: Catania (1973), in discussing the concept of the operant suggested responses should not be classified based on arbitrary criteria such as response function or topography alone, and rather should focus on the continuous distribution of responding. Catania (1973) hypothesised that response distributions would resemble a normal curve, even when reinforcement was provided for only those responses that occurred between two limits. Six domestic hens were used in a series of experiments in order to investigate Catania’s (1973) suggestion. In the first experiment the hens pecked at a flat screen with an infra-red device was mounted in front the screen to detect response location. Pecks in defined regions of the screen resulted in 3-s access to wheat. Over conditions, different quadrants of the screen were active. The whole screen remained white throughout each session except when the reinforcement was being delivered. The hens responded on a fixed-ration 5 schedule for 40 reinforcers per session. Over sessions the distribution of the locations of responses shifted to being centred over the active quadrant. Proportions of correct responses increased across sessions but incorrect responses persisted throughout. In Experiment 2 the screen was divided into ten 30-mm regions of which one was active in each condition while the whole screen remained white. The active region was moved in steps from the left to the right and from the right to the left of the screen over eleven conditions with eight sessions in each conditions and a fixed-ratio 5 schedule. In general, in each condition the proportion of correct responses increased to around 0.4. In each condition the distribution of response location shifted to being centred over the active region, resembling a normal distribution. In most cases, response rates on the active region were higher than for the inactive regions, hens usually responded on several regions at a moderate rate. In Condition 12 the active region was coloured red and this resulted in a narrower distribution of response locations, and higher proportions of correct response that other conditions for most hens. A large number of incorrect response persisted throughout this condition. These findings provide some evidence that supports Catania’s (1973) hypothetical response distributions. The argument is made that Catania’s (1973) concept of the operant could be a way to organise responses into a class and also that is provides a means of classifying response while maintaining the continuity of behaviour and, therefore, avoids the use of arbitrary criterion.

text: An Investigation of Catania's Concept of the Operant Catania (1973), in discussing the concept of the operant suggested responses should not be classified based on arbitrary criteria such as response function or topography alone, and rather should focus on the continuous distribution of responding. Catania (1973) hypothesised that response distributions would resemble a normal curve, even when reinforcement was provided for only those responses that occurred between two limits. Six domestic hens were used in a series of experiments in order to investigate Catania’s (1973) suggestion. In the first experiment the hens pecked at a flat screen with an infra-red device was mounted in front the screen to detect response location. Pecks in defined regions of the screen resulted in 3-s access to wheat. Over conditions, different quadrants of the screen were active. The whole screen remained white throughout each session except when the reinforcement was being delivered. The hens responded on a fixed-ration 5 schedule for 40 reinforcers per session. Over sessions the distribution of the locations of responses shifted to being centred over the active quadrant. Proportions of correct responses increased across sessions but incorrect responses persisted throughout. In Experiment 2 the screen was divided into ten 30-mm regions of which one was active in each condition while the whole screen remained white. The active region was moved in steps from the left to the right and from the right to the left of the screen over eleven conditions with eight sessions in each conditions and a fixed-ratio 5 schedule. In general, in each condition the proportion of correct responses increased to around 0.4. In each condition the distribution of response location shifted to being centred over the active region, resembling a normal distribution. In most cases, response rates on the active region were higher than for the inactive regions, hens usually responded on several regions at a moderate rate. In Condition 12 the active region was coloured red and this resulted in a narrower distribution of response locations, and higher proportions of correct response that other conditions for most hens. A large number of incorrect response persisted throughout this condition. These findings provide some evidence that supports Catania’s (1973) hypothetical response distributions. The argument is made that Catania’s (1973) concept of the operant could be a way to organise responses into a class and also that is provides a means of classifying response while maintaining the continuity of behaviour and, therefore, avoids the use of arbitrary criterion.

year: 2012

title: Te kū o te kupu

authors: Raerino, Heddell Robert

subjects: Māori language

abstract: Ko tēnei tuhingaroa, he rangahau hai wherawhera ake i te āhuatanga o te reo Māori, e kiia ana ko tōna oro, me te kū o ngā kupu kōrero o taua reo. Ko te aronga whakaaro o tēnei rangahau, he rapu i tētahi āhuatanga kāore anō kia tirotirohia, kia tuhia rānei mō te reo Māori. Ehara tēnei rangahau i te kaupapa, i te mahi hou. Otirā, kai te whai te kaituhi i ngā rangahau kua oti kē i wētahi tohunga te wānanga mō wētahi atu reo. Ko tā te kaituhi he whai i ngā tauira a te hunga wetewete reo nei, ka uwhi ai ki runga i te reo Māori hai āwhina i ngā tātaritanga ā te kaituhi mō tōna ake reo, arā, te reo Māori.

Kai te upoko tuatahi ka whaia ngā rerenga whakaaro i pūpū ake ai te taitara 'te kū o te kupu' mō tēnei mahi rangahau. Inā ka tirohia i ahu ngā oro o te reo mai i whea e ai ki tā te Māori wānanga. Mai i ngā oro ka puta ko ngā ku o ngā kupu me ngā kupu o ngā rārangi kōrero.

Hai te upoko tuarua ka tirohia ngā kōrero kua tuhia e ngā tohunga wetewete reo e pā ana ki te kaupapa o tēnei tuhingaroa, arā, te kū o te kupu. Ko ngā tirohanga mō te reo ake, arā, i ahu mai i whea, he aha ōna momo whakaata me tōna pakaritanga ka tirohia i roto i te upoko tuatoru.

Mai i ngā momo whakaata o te reo i roto i ngā momo waiata, ka āta tahuri te kaituhi ki te whakawhānui haere i tana wetewete me tāna tūhononga i ngā rerenga me ngā pekanga o te ku o te kupu.

Kai te upoko tuarima ka tirohia ngā whāinga me ngā aronga ā wētahi kaitito
waiata Māori me wētahi kaikōrero i te reo Māori, mō ō rātau māramatanga ki ngā kū me ngā oro o te reo Māori.

Kai te upoko tuaono e whāriki ana wētahi tauira kōrero Māori, hai whakaata i ngā momo orōmāhara, oro ohorere, ororite, kupu whakahuarua me wērā atu tauira whakaahua i ngā kū o te kupu me ngā oro o te reo Māori.

Ko ngā hua o tēnei rangahau, o tēnei tuhingaroa ka kitea i roto i te upoko
tuawhitu. Kōinei te whakakopinga o tēnei mahi.

text: Te kū o te kupu Ko tēnei tuhingaroa, he rangahau hai wherawhera ake i te āhuatanga o te reo Māori, e kiia ana ko tōna oro, me te kū o ngā kupu kōrero o taua reo. Ko te aronga whakaaro o tēnei rangahau, he rapu i tētahi āhuatanga kāore anō kia tirotirohia, kia tuhia rānei mō te reo Māori. Ehara tēnei rangahau i te kaupapa, i te mahi hou. Otirā, kai te whai te kaituhi i ngā rangahau kua oti kē i wētahi tohunga te wānanga mō wētahi atu reo. Ko tā te kaituhi he whai i ngā tauira a te hunga wetewete reo nei, ka uwhi ai ki runga i te reo Māori hai āwhina i ngā tātaritanga ā te kaituhi mō tōna ake reo, arā, te reo Māori.

Kai te upoko tuatahi ka whaia ngā rerenga whakaaro i pūpū ake ai te taitara 'te kū o te kupu' mō tēnei mahi rangahau. Inā ka tirohia i ahu ngā oro o te reo mai i whea e ai ki tā te Māori wānanga. Mai i ngā oro ka puta ko ngā ku o ngā kupu me ngā kupu o ngā rārangi kōrero.

Hai te upoko tuarua ka tirohia ngā kōrero kua tuhia e ngā tohunga wetewete reo e pā ana ki te kaupapa o tēnei tuhingaroa, arā, te kū o te kupu. Ko ngā tirohanga mō te reo ake, arā, i ahu mai i whea, he aha ōna momo whakaata me tōna pakaritanga ka tirohia i roto i te upoko tuatoru.

Mai i ngā momo whakaata o te reo i roto i ngā momo waiata, ka āta tahuri te kaituhi ki te whakawhānui haere i tana wetewete me tāna tūhononga i ngā rerenga me ngā pekanga o te ku o te kupu.

Kai te upoko tuarima ka tirohia ngā whāinga me ngā aronga ā wētahi kaitito
waiata Māori me wētahi kaikōrero i te reo Māori, mō ō rātau māramatanga ki ngā kū me ngā oro o te reo Māori.

Kai te upoko tuaono e whāriki ana wētahi tauira kōrero Māori, hai whakaata i ngā momo orōmāhara, oro ohorere, ororite, kupu whakahuarua me wērā atu tauira whakaahua i ngā kū o te kupu me ngā oro o te reo Māori.

Ko ngā hua o tēnei rangahau, o tēnei tuhingaroa ka kitea i roto i te upoko
tuawhitu. Kōinei te whakakopinga o tēnei mahi.

year: 2000