The Extended Edit Distance Metric

Similarity search is an important problem in information retrieval. This similarity is based on a distance. Symbolic representation of time series has attracted many researchers recently, since it reduces the dimensionality of these high dimensional data objects. We propose a new distance metric that is applied to symbolic data objects and we test it on time series data bases in a classification task. We compare it to other distances that are well known in the literature for symbolic data objects. We also prove, mathematically, that our distance is metric.Comment: Technical repor

One-Step or Two-Step Optimization and the Overfitting Phenomenon: A Case Study on Time Series Classification

For the last few decades, optimization has been developing at a fast rate. Bio-inspired optimization algorithms are metaheuristics inspired by nature. These algorithms have been applied to solve different problems in engineering, economics, and other domains. Bio-inspired algorithms have also been applied in different branches of information technology such as networking and software engineering. Time series data mining is a field of information technology that has its share of these applications too. In previous works we showed how bio-inspired algorithms such as the genetic algorithms and differential evolution can be used to find the locations of the breakpoints used in the symbolic aggregate approximation of time series representation, and in another work we showed how we can utilize the particle swarm optimization, one of the famous bio-inspired algorithms, to set weights to the different segments in the symbolic aggregate approximation representation. In this paper we present, in two different approaches, a new meta optimization process that produces optimal locations of the breakpoints in addition to optimal weights of the segments. The experiments of time series classification task that we conducted show an interesting example of how the overfitting phenomenon, a frequently encountered problem in data mining which happens when the model overfits the training set, can interfere in the optimization process and hide the superior performance of an optimization algorithm

The principle of non-interference in ASEAN: Can Malaysia spearhead the effort towards a more interventionist ASEAN

The principle of non-interference in the internal aff airs of ASEAN member states has been identified as among the most significant element that shaped ASEAN intra relations and still remain very much appreciated. By not allowing member states to interfere into another’s internal affairs, especially into politico-security issues, it has created a stable and secured environment in the region which contributed tremendously to the efforts of national building and economic development. However, several regional incidents such as the 1997 Asian Economic Crisis, the spread of the Severe Acute Respiratory Syndrome (SARS), Indonesian Smog/Haze crisis and the Myanmar internal political quandary have questioned if not shaken the belief that the doctrine of non-interference is an untouchable sacred political arrangement. This paper will investigate the genesis of this doctrine, the incidents that challenge the doctrine and Malaysia’s readiness as a country to lead changes in the doctrine

PENGARUH KEPEMIMPINAN, KOMUNIKASI DAN KONDISI FISIK KERJA TERHADAP SEMANGAT KERJA KARYAWAN PADA PT. SUN STAR MOTOR DI SALATIGA

Keberhasilan manajemen di dalam kehidupan organisasi perusahaan ditentukan oleh tinggi rendahnya produktivitas seseorang, sedangkan produktivitas itu sendiri di pengaruhi oleh semangat kerja karyawan. Semangat kerja yang tinggi sangat diperlukan dalam setiap kerja sama karyawan untuk mencapai tujuan perusahaan, tapi sebaliknya apabila karyawan memiliki semangat kerja yang rendah maka akan sulit mencapai hasil pekerjaan dengan baik. Oleh karena itu setiap perusahaan akan selalu berusaha agar para karyawan mempunyai semangat kerja yang tinggi. Pada penelitian ini penulis akan membahas mengenai “Pengaruh Kepemimpinan, Komunikasi, Dan Kondisi Fisik Kerja Terhadap Semangat Kerja Karyawan Pada PT. Sun Star Motor Di Salatiga” Rumusan permasalahan dalam penelitian ini yakni Apakah kepemimpinan, komunikasi dan kondisi fisik tempat kerja mempunyai pengaruh yang signifikan terhadap semangat kerja karyawan ? Variabel mana yang mempunyai pengaruh paling dominan terhadap semangat kerja karyawan ? Penelitian ini mempunyai tujuan untuk mengetahui pengaruh kepemimpinan, komunikasi dan kondisi fisik tempat kerja karyawan terhadap semangat kerja karyawan, dan untuk mengetahui variabel mana yang mempunyai pengaruh paling dominan dari ketiga variabel (kepemimpinan, komunikasi dan kondisi fisik tempat kerja karyawan) terhadap semangat kerja karyawan. Analisis data yang digunakan dalam penelitian ini adalah analisis regresi linier berganda. Analisis regresi digunakan untuk menggambarkan pengaruh variabel independent (kepemimpinan, komunikasi dan kondisi fisik) terhadap variabel dependen (semangat kerja). Hasil analisis data diperoleh R² sebesar 0,585 hal ini menunjukkan bahwa variabel kepemimpinan, komunikasi, dan kondisi fisik mempunyai kontribusi pengaruh terhadap variabel semangat kerja sebesar 58,5%. Sedangkan sisanya sebesar 41,5% mendapat kontribusi dari variabel lain yang tidak terdapat di dalam model atau tidak penulis teliti, variabel-variabel tersebut misalnya variabel upah, motivasi kerja, intensif dan lain-lain. Dengan demikian penggunaan variabel independen dalam mempengaruhi semangat kerja karyawan PT. Sun Star Motor Di Salatiga sudah cukup tepat. Pengujian terhadap masing-masing variabel adalah, nilai thitung variabel kepemimpinan sebesar 2,337, Variabel komunikasi diperoleh thitung sebesar 2,076, Variabel kondisi fisik diperoleh thitung sebesar 3,969 > ttabel (2,002) maka kepemimpinan, komunikasi dan kondisi fisik secara individu berpengaruh signifikan terhadap semangat kerja karyawan PT. Sun Star Motor Di Salatiga. Berdasarkan uji F untuk pengaruh secara bersama-sama, diperoleh Fhitung sebesar 26,344 dan Ftabel sebesar 2,76 sehingga Fhitung (26,344) > Ftabel (2,76) berarti H1 ditolak, maka variabel kepemimpinan, komunikasi, dan kondisi fisik berpengaruh signifikan terhadap semangat kerja Dengan melihat nilai koefisien regresi dapat diketahui variabel kepemimpinan sebesar 0,234, variabel komunikasi sebesar 0,239, dan variabel kondisi fisik sebesar 0,376, maka dapat disimpulkan bahwa variabel yang paling dominan berpengaruh terhadap semangat kerja adalah variabel kondisi fisik

Tracking and counting motion for monitoring food intake based on depth sensor

Obesity has been a serious health concern among people. Moreover, obesity continues to be a serious public health concern in Malaysia and continuing to rise. Nearly half of Malaysians are overweight. Most of the dietary approaches are not tracking and detecting the right calorie intake for weight loss, but currently used tools such as food diaries require users to manually record and track the food calories, making them difficult to be utilized for daily use. Therefore, this project developed a new tool that counts the food intake by monitoring eating motion movement of caloric intake to overcome health issues. The food intake counting method showed a good significance that can lead to a successful weight loss by simply monitoring the food intake taken during eating. The device used was Kinect Xbox One which used a depth camera to detect the motion of a person’s gesture and posture during food intake. Previous studies have shown that most of the methods used to count food intake device is worn device type. The recent trend is now going towards non-wearable devices due to the difficulty when wearing devices and it has high false alarm ratio. The proposed system gets data from the Kinect camera and monitors the gesture of the user while eating. Then, the gesture data is collected to be recognized and it will start counting the food intake taken by the user. The system recognizes the patterns of the food intake from the user by following the algorithm design in this thesis to analyze the gesture of the basic eating type and the system get an average accuracy of 96.2%. This system can help people who are trying to follow a proper way to avoid being overweight or having eating disorders by monitoring their meal intake and controlling their eating rate

Pengaruh Struktur Kepemilikan Terkonsentrasi dan Karakteristik Komite Audit terhadap Tingkat Keinformatifan Laba

This research aimed to examine the effect of concentrated ownership structure and the audit committee characteristics on the earnings informativeness, as well as examine the negative effect of concentrated ownership on the relationship of audit committee characteristics with earnings informativeness. Concentrated ownership in this research is based on the percentage shares of ownership in a company. Audit committee characteristics consist of independent, non- financial characteristic, financial expertise, and legal expertise. Control variables in this research are the size of the company, leverage, and market-to-book ratio. This research is based on research conducted by Yeh and Woidtke (2013) and Wawo (2010) with modifications on the variables and sample. This research is modified by making concentrated ownership variable as moderating variable to examine the negative effect of it on the relationship between audit committee characteristics and earnings informativeness. In accordance with Yeh and Woidtke (2013), earnings informativeness is proxied by relationship between earnings and cumulative abnormal returns (CAR).The research used secondary data from the annual reports of all companies listed on the Indonesian Stock Exchange (IDX) from 2010 to 2013. Sampling method used in this research was purposive sampling. A total sample of 164 companies data were used in analysis. The data is analyzed using multiple linear regression analysis.The results of this research indicate that concentrated ownership negatively affects earnings informativeness and independence of audit committees positively affects earnings informativeness. Concentrated ownership may reduce the positive relationship between independence of the audit committee and earnings informativeness. Nevertheless, the results of this research found no effect of the characteristics of non-financial characteristic, financial expertise, legal expertise on the earnings informativeness. Concentrated ownership does not moderate the relationship of these three characteristics with earnings informativeness

PENGARUH STRUKTUR KEPEMILIKAN TERKONSENTRASI DAN KARAKTERISTIK KOMITE AUDIT TERHADAP TINGKAT KEINFORMATIFAN LABA

This research aimed to examine the effect of concentrated ownership structure and the audit committee characteristics on the earnings informativeness, as well as examine the negative effect of concentrated ownership on the relationship of audit committee characteristics with earnings informativeness. Concentrated ownership in this research is based on the percentage shares of ownership in a company. Audit committee characteristics consist of independent, non-financial characteristic, financial expertise, and legal expertise. Control variables in this research are the size of the company, leverage, and market-to-book ratio. This research is based on research conducted by Yeh and Woidtke (2013) and Wawo (2010) with modifications on the variables and sample. This research is modified by making concentrated ownership variable as moderating variable to examine the negative effect of it on the relationship between audit committee characteristics and earnings informativeness. In accordance with Yeh and Woidtke (2013), earnings informativeness is proxied by relationship between earnings and cumulative abnormal returns (CAR). The research used secondary data from the annual reports of all companies listed on the Indonesian Stock Exchange (IDX) from 2010 to 2013. Sampling method used in this research was purposive sampling. A total sample of 164 companies data were used in analysis. The data is analyzed using multiple linear regression analysis. The results of this research indicate that concentrated ownership negatively affects earnings informativeness and independence of audit committees positively affects earnings informativeness. Concentrated ownership may reduce the positive relationship between independence of the audit committee and earnings informativeness. Nevertheless, the results of this research found no effect of the characteristics of non-financial characteristic, financial expertise, legal expertise on the earnings informativeness. Concentrated ownership does not moderate the relationship of these three characteristics with earnings informativeness

FAKTOR-FAKTOR YANG MEMPENGARUHI KEPUTUSAN HEDGINGN PADA PERUSAHAAN PERTAMBANGAN (Studi Kasus Perusahaan Pertambangan Yang Terdaftar di ISSI Pada Tahun 2012-2016)

Penelitian ini bertujuan untuk mengetahui pengaruh Leverage yang diproksikan dengan Debt to Equity Ratio, Likuiditas yang diproksikan dengan Current Ratio, UkuranPerusahaan yang diproksikan dengan Total Aset dan Profitabilitas yang diproksikan dengan Return On Asset terhadap Keputusan Hedging pada Perusahaan Pertambangan yang terdaftar di Indeks Saham Syariah Indonesia. Periode yang digunakan adalah tahun 2012 – 2016. Desain penelitian ini adalah penelitian kuantitatif dan data yang digunakan adalah data sekunder. Populasi yang digunakan dalam penelitian ini adalah seluruh perusahaan pertambangan. Sampel yang digunakan dalam penelitian ini berjumlah 12 perusahaan pertambangan. Teknik pengambilan sampel ditentukan dengan menggunakan metode cluster sampling, dan metode analisis yang digunakan dalam penelitian ini adalah metode Regresi Logistik. Berdasarkan hasil penelitian, menunjukkan bahwa variabel Leverage yang diproksikan dengan Debt to Equity Ratio memiliki arah koefisien regresi yang positif dengan nilai signifikansinya adalah 0,005 > 0,05, artinya Leverage berpengaruh terhadap Keputusan Hedging Perusahaan Manufaktur. Variabel Likuiditas yang diproksikan dengan CurrentRatio memiliki arah koefisien regresi yang positif, dengan nilai signifikansinyaadalah 0,302 > 0,05, artinya Likuiditas tidak berpengaruh signifikan terhadap Keputusan Hedging Perusahaan Manufaktur. Ukuran Perusahaan yang diproksikan dengan Total Aset memiliki arah koefisien regresi yang positif, dengan nilai signifikansinya adalah 0,001 < 0,05, artinya Ukuran Perusahaan berpengaruh terhadap Keputusan Hedging Perusahaan Manufaktur. Dan Profitabilitas yang diproksikan dengan Return On Asset memiliki arah koefisien regresi yang negatif, dengan nilai signifikansinya adalah 0,410 < 0,05, artinya Profitabilitas tidak berpengaruh terhadap Keputusan Hedging Perusahaan Manufaktur. Nilai Nagelkerke’s R Square sebesar 49,3% yang dijelaskan oleh empat variabel: Leverage, Profitabilitas, Likuiditas, dan Ukuran Perusahaan. Sedangkan 50,7% (100 – 49,3) dijelaskan oleh variabel lainnya di luar model penelitian. Kata Kunci: Keputusan Hedging, Leverage, Likuiditas, Ukuran Perusahaan dan Profitabilita