Judul: Reproduction of The Amphidromous Greenback gauvina Bunaka Gyrinoides (Bleeker 1853) in Cisolok River, Sukabumi, West Java
Abstrak: Ikan bobosoh atau Bunaka gyrinoides (Bleeker 1853) merupakan salah satu spesies ikan amfidromus air tawar dari famili Eleotridae. Meskipun ikan ini menarik, namun penelitian tentang ikan ini masih jarang dilakukan terutama tentang aspek reproduksinya. Oleh karena itu, penelitian ini difokuskan untuk menganalisis nisbah kelamin, musim pemijahan, pola pemijahan, dan potensi reproduksi ikan bobosoh di Sungai Cisolok, Palabuhanratu. Sampel ikan bobosoh diperoleh dari hasil tangkapan selama Desember 2020-November 2021 dengan menggunakan beberapa metode penangkapan, yakni electrofishing, jala lempar, pancing, dan liftnet. Ikan bobosoh yang terkoleksi selama penelitian 360 ekor yang terdiri atas 202 ekor ikan jantan dan 158 ekor ikan betina. Nisbah kelamin ikan bobosoh jantan dan betina di Sungai Cisolok tidak 1:1 (1:0,78). Ikan bobosoh memijah pada bulan Maret dan November, dengan puncak pemijahan terjadi pada bulan Maret. Ikan bobosoh memiliki pola pemijahan serentak dan dapat menghasilkan jumlah telur relatif sebanyak 246 hingga 1.073 butir/g bobot ikan (panjang 63-107 mm dan bobot 2,99-11,62 g)., The Greenback Gauvina, or Bunaka gyrinoides (Bleeker 1853), is a freshwater amphidromous fish from the Eleotridae family. Despite being a fascinating species, research on this fish is still rare especially about the reproductive aspect. Therefore, this study focuses on analyzing the sex ration, spawning season, spawning pattern, and reproductive potential of the greenback guavina in the Cisolok River, Palabuhanratu. Samples of the greenback guavina were collected between December 2020 and November 2021 using various fishing methods, including electrofishing, throwing nets, fishing rods, and lifts. During the study period, 360 greenback guavina were captured, with 202 of them identified as male and 158 as female. It was found that the sex ratio of the greenback guavina in the Cisolok River was not 1:1 (1:0,78). Greenback guavina usually spawns during March and November, with the highest spawning activity in March. This species shows a total spawning pattern and can produce a relative egg count of 246 to 1,073 eggs/g fish weight (63-107 mm in length and 2.99- 11.62 g in weight)
Keyword: amphidromous, Cisolok, greenback guavina, reproductive

Judul: Reproductive Biology of Red Bigeye (Priacanthus macracanthus Cuvier, 1829) in Palabuhanratu Bay, Sukabumi, West Java
Abstrak: Ikan swanggi (Priacanthus macracanthus) merupakan salah satu ikan demersal yang memiliki nilai ekonomis dan ekologis penting. Tingginya intensitas penangkapan ikan swanggi akan berdampak pada perkembangan stok ikan yang akan terhambat serta mengancam potensi sumberdaya ikan swanggi. Penelitian ini bertujuan menganalisis aspek biologi reproduksi ikan swanggi di Teluk Palabuhanratu. Penelitian ini dilakukan pada bulan September 2021 hingga Februari 2022. Metode yang digunakan dalam pengambilan contoh adalah penarikan contoh acak sederhana. Ukuran contoh ikan swanggi yang diteliti sebanyak 566 ekor. Nisbah kelamin sebesar 1:1,18 yang didominasi ikan betina. Pola pertumbuhan ikan swanggi yaitu allometrik negatif. Potensi reproduksi ikan swanggi berkisar antara 16.921-28.683 butir telur. Pola pemijahan ikan swanggi adalah total spawner atau pemijahan terjadi secara sekaligus. Puncak musim pemijahan selama pengamatan terjadi pada bulan Februari., Red bigeye (Priacanthus macracanthus) is one of the demersal fish that has important economic value. The high intensity of red bigeye fishing will have an impact on the development of fish stocks which will be hampered and threaten the potential of red bigeye resources. This research aims to analyze the reproductive biology of red bigeye in Palabuhanratu Bay. This research was conducted from September 2021 to February 2022. The method used in sampling was simple random sampling. This research using 566 individuals. The sex ratio of male and female is 1:1,18 which is dominated by female fish. The growth pattern of red bigeye is negative allometric. The reproductive potential of red bigeye ranged from 16,921-28,683 of eggs. Spawning pattern of red bigeye is a total spawner or spawning time occurs at once. The peak spawning season during observation was occured in February.
Keyword: Palabuhanratu, Red Bigeye, Reproductive Biology

Judul: Sistem Pengklasifikasian Entitas pada Pesan Twitter Menggunakan Ekspresi Regular dan Naïve Bayes
Abstrak: The widespread use of social networks like Twitter encourages some institutions to find out the entities that are discussed and the sentiment toward the entities. This research aims to build a system that can extract entities in tweets and classify the sentiment from the tweets. Entity extraction process is done using regular expressions. Writing regular expressions can capture the diverse entities. Sentiment classification is performed using naïve Bayes classification with Multinomial and Bernoulli models. Sentiment in this research consists of three classes, namely positive, negative, and neutral. Before entering the classification, tweets are normalized by replacing the non-standard words with the standard ones. The test results show that regular expression is quite effective for the entity extraction process. As for the results of the classification, naïve Bayes method produces high accuracy (96.75% for Multinomial and 96.33% for Bernoulli). However, the accuracy obtained depends on the neutral class which amounts to 97.88% for Multinomial and 99.95% for Bernoulli, while the positive class are 85.66% and 33.13% and negative class are 33.67% and 0%.
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