
Clustering 3
Authored by Vongpasith Phouthone
Computers
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ການປະເມີນຜົນກຸ່ມແບບໃດທີ່ໃຊ້ພຽງແຕ່ຂໍ້ມູນພາຍໃນ (ເຊັ່ນ ໄລຍະຫ່າງພາຍໃນກຸ່ມ ແລະ ລະຫວ່າງກຸ່ມ) ໂດຍບໍ່ຕ້ອງການ Ground Truth?
External Evaluation
Internal Evaluation
Manual Evaluation
Comparative Evaluation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Silhouette Coefficient ໃຊ້ເພື່ອວັດແທກຫຍັງ?
ຄວາມຊັບຊ້ອນທາງເວລາ (Time complexity)
ຄວາມໄວຂອງລະບົບວິທີການວິເຄາະກຸ່ມ
ຄຸນນະພາບຂອງການຈັດກຸ່ມ (ຄວາມແໜ້ນໜາພາຍໃນກຸ່ມ ທຽບກັບ ການແຍກອອກຈາກກຸ່ມອື່ນ)
ຈຳນວນ Outliers ທີ່ກວດພົບ
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ຄ່າ Silhouette Coefficient ທີ່ໃກ້ຄຽງ +1 ໝາຍຄວາມວ່າແນວໃດສຳລັບຈຸດຂໍ້ມູນນັ້ນ?
ຈຸດນັ້ນເປັນ Outlier
ຈຸດນັ້ນຢູ່ໃກ້ກັບເສັ້ນແບ່ງເຂດແດນລະຫວ່າງສອງກຸ່ມ
ຈຸດນັ້ນຖືກຈັດເຂົ້າກຸ່ມໄດ້ຢ່າງເໝາະສົມ (ຢູ່ໃກ້ກັບຈຸດອື່ນໃນກຸ່ມຕົນເອງ ແລະ ຢູ່ໄກຈາກກຸ່ມອື່ນ)
ຈຸດນັ້ນອາດຈະຖືກຈັດເຂົ້າກຸ່ມຜິດ
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ຄ່າ Average Silhouette Score ທີ່ສູງຂຶ້ນ ໂດຍທົ່ວໄປແລ້ວຊີ້ບອກເຖິງຫຍັງ?
ການຈັດກຸ່ມທີ່ບໍ່ດີ
ການຈັດກຸ່ມທີ່ດີຂຶ້ນ
ຈຳນວນກຸ່ມທີ່ຫຼາຍເກີນໄປ
ລະບົບວິທີທີ່ໃຊ້ເວລາຄຳນວນຫຼາຍຂຶ້ນ
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ວິທີການປະເມີນຜົນເຊັ່ນ Adjusted Rand Index (ARI) ແລະ Normalized Mutual Information (NMI) ຈັດຢູ່ໃນປະເພດໃດ?
Internal Evaluation
External Evaluation
Visualization Methods
Parameter Tuning Methods
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ຂັ້ນຕອນວິທີ (Algorithm) ການວິເຄາະກຸ່ມໃດທີ່ອ່ອນໄຫວຕໍ່ Outliers ຫຼາຍທີ່ສຸດ ເນື່ອງຈາກມັນໃຊ້ຄ່າສະເລ່ຍໃນການປັບປຸງຈຸດໃຈກາງ?
DBSCAN
K-Means
Agglomerative Clustering with Single Linkage
OPTICS
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ເພື່ອໃຫ້ໄດ້ຜົນຮັບທີ່ດີຈາກ K-Means, ກຸ່ມຂໍ້ມູນຄວນມີລັກສະນະແນວໃດ?
ມີຮູບຮ່າງຍາວ ແລະ ໂຄ້ງ
ມີຄວາມໜາແໜ້ນແຕກຕ່າງກັນຫຼາຍ
ມີລັກສະນະເປັນກ້ອນກົມ (Spherical) ແລະ ມີຂະໜາດໃກ້ຄຽງກັນ
ມີຈຳນວນ Outliers ຫຼາຍ
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