Competitive Programming
Berikut ini contoh error log
2023-10-25 18:48:49 0 [Note] Starting MariaDB 10.4.28-MariaDB source revision c8f2e9a5c0ac5905f28b050b7df5a9ffd914b7e7 as process 10860
2023-10-25 18:48:49 0 [ERROR] mysqld.exe: Aria engine: log data error
last_log_page: (1,0x6000) is less than
checkpoint page: (1,0x8000)
2023-10-25 18:48:49 0 [ERROR] mysqld.exe: Aria engine: log initialization failed
2023-10-25 18:48:49 0 [ERROR] Plugin 'Aria' init function returned error.
2023-10-25 18:48:49 0 [ERROR] Plugin 'Aria' registration as a STORAGE ENGINE failed.
2023-10-25 18:48:49 0 [Note] InnoDB: !!! innodb_force_recovery is set to 1 !!!
2023-10-25 18:48:49 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2023-10-25 18:48:49 0 [Note] InnoDB: Uses event mutexes
2023-10-25 18:48:49 0 [Note] InnoDB: Compressed tables use zlib 1.2.12
2023-10-25 18:48:49 0 [Note] InnoDB: Number of pools: 1
2023-10-25 18:48:49 0 [Note] InnoDB: Using SSE2 crc32 instructions
2023-10-25 18:48:49 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2023-10-25 18:48:49 0 [Note] InnoDB: Completed initialization of buffer pool
2023-10-25 18:48:49 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2023-10-25 18:48:49 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2023-10-25 18:48:49 0 [Note] InnoDB: Setting file 'C:\xampp\mysql\data\ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2023-10-25 18:48:49 0 [Note] InnoDB: File 'C:\xampp\mysql\data\ibtmp1' size is now 12 MB.
2023-10-25 18:48:49 0 [Note] InnoDB: Waiting for purge to start
2023-10-25 18:48:49 0 [Note] InnoDB: 10.4.28 started; log sequence number 38386282972; transaction id 6948647
2023-10-25 18:48:49 0 [Note] InnoDB: Loading buffer pool(s) from C:\xampp\mysql\data\ib_buffer_pool
2023-10-25 18:48:49 0 [Note] Plugin 'FEEDBACK' is disabled.
2023-10-25 18:48:49 0 [ERROR] Could not open mysql.plugin table. Some plugins may be not loaded
2023-10-25 18:48:49 0 [ERROR] Failed to initialize plugins.
2023-10-25 18:48:49 0 [Note] InnoDB: Buffer pool(s) load completed at 231025 18:48:49
2023-10-25 18:48:49 0 [ERROR] Aborting
2023-10-25 18:50:48 0 [Note] Starting MariaDB 10.4.28-MariaDB source revision c8f2e9a5c0ac5905f28b050b7df5a9ffd914b7e7 as process 26668
2023-10-25 18:50:48 0 [ERROR] mysqld.exe: Aria engine: log data error
last_log_page: (1,0x6000) is less than
checkpoint page: (1,0x8000)
2023-10-25 18:50:48 0 [ERROR] mysqld.exe: Aria engine: log initialization failed
2023-10-25 18:50:48 0 [ERROR] Plugin 'Aria' init function returned error.
2023-10-25 18:50:48 0 [ERROR] Plugin 'Aria' registration as a STORAGE ENGINE failed.
2023-10-25 18:50:48 0 [Note] InnoDB: !!! innodb_force_recovery is set to 1 !!!
2023-10-25 18:50:48 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2023-10-25 18:50:48 0 [Note] InnoDB: Uses event mutexes
2023-10-25 18:50:48 0 [Note] InnoDB: Compressed tables use zlib 1.2.12
2023-10-25 18:50:48 0 [Note] InnoDB: Number of pools: 1
2023-10-25 18:50:48 0 [Note] InnoDB: Using SSE2 crc32 instructions
2023-10-25 18:50:48 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2023-10-25 18:50:48 0 [Note] InnoDB: Completed initialization of buffer pool
2023-10-25 18:50:48 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2023-10-25 18:50:48 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2023-10-25 18:50:48 0 [Note] InnoDB: Setting file 'C:\xampp\mysql\data\ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2023-10-25 18:50:48 0 [Note] InnoDB: File 'C:\xampp\mysql\data\ibtmp1' size is now 12 MB.
2023-10-25 18:50:48 0 [Note] InnoDB: Waiting for purge to start
2023-10-25 18:50:48 0 [Note] InnoDB: 10.4.28 started; log sequence number 38386282981; transaction id 6948647
2023-10-25 18:50:48 0 [Note] InnoDB: Loading buffer pool(s) from C:\xampp\mysql\data\ib_buffer_pool
2023-10-25 18:50:48 0 [Note] Plugin 'FEEDBACK' is disabled.
2023-10-25 18:50:48 0 [ERROR] Could not open mysql.plugin table. Some plugins may be not loaded
2023-10-25 18:50:48 0 [Note] InnoDB: Buffer pool(s) load completed at 231025 18:50:48
2023-10-25 18:50:48 0 [ERROR] Failed to initialize plugins.
2023-10-25 18:50:48 0 [ERROR] AbortingSolusinya: hapus file C:/xampp/mysql/data/aria_log_control , kemudian nyalakan MySQL
Hasil setelah file tersebut dihapus:
2023-10-25 18:51:43 0 [Note] Starting MariaDB 10.4.28-MariaDB source revision c8f2e9a5c0ac5905f28b050b7df5a9ffd914b7e7 as process 22212
2023-10-25 18:51:43 0 [Note] InnoDB: !!! innodb_force_recovery is set to 1 !!!
2023-10-25 18:51:43 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2023-10-25 18:51:43 0 [Note] InnoDB: Uses event mutexes
2023-10-25 18:51:43 0 [Note] InnoDB: Compressed tables use zlib 1.2.12
2023-10-25 18:51:43 0 [Note] InnoDB: Number of pools: 1
2023-10-25 18:51:43 0 [Note] InnoDB: Using SSE2 crc32 instructions
2023-10-25 18:51:43 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2023-10-25 18:51:43 0 [Note] InnoDB: Completed initialization of buffer pool
2023-10-25 18:51:43 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2023-10-25 18:51:43 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2023-10-25 18:51:43 0 [Note] InnoDB: Setting file 'C:\xampp\mysql\data\ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2023-10-25 18:51:43 0 [Note] InnoDB: File 'C:\xampp\mysql\data\ibtmp1' size is now 12 MB.
2023-10-25 18:51:43 0 [Note] InnoDB: Waiting for purge to start
2023-10-25 18:51:43 0 [Note] InnoDB: 10.4.28 started; log sequence number 38386282990; transaction id 6948647
2023-10-25 18:51:43 0 [Note] InnoDB: Loading buffer pool(s) from C:\xampp\mysql\data\ib_buffer_pool
2023-10-25 18:51:43 0 [Note] Plugin 'FEEDBACK' is disabled.
2023-10-25 18:51:43 0 [Note] InnoDB: Buffer pool(s) load completed at 231025 18:51:43
2023-10-25 18:51:43 0 [Note] Zerofilling moved table: '.\mysql\plugin'
2023-10-25 18:51:43 0 [Note] Zerofilling moved table: '.\mysql\servers'
2023-10-25 18:51:43 0 [Note] Server socket created on IP: '::'.data science, cluster analysis
Abstrak
Dengan perkembangan terkini dalam pembelajaran mendalam, keberadaan mikrofon di mana-mana, dan peningkatan layanan online melalui perangkat pribadi, serangan saluran samping akustik menghadirkan ancaman yang lebih besar terhadap keyboard daripada sebelumnya. Makalah ini menyajikan implementasi praktis dari model pembelajaran mendalam yang canggih untuk mengklasifikasikan penekanan tombol laptop, menggunakan mikrofon terintegrasi smartphone. Saat dilatih tentang penekanan tombol yang direkam oleh ponsel terdekat, pengklasifikasi mencapai akurasi 95%, akurasi tertinggi terlihat tanpa penggunaan model bahasa. Saat dilatih tentang penekanan tombol yang direkam menggunakan perangkat lunak konferensi video Zoom, akurasi mencapai 93%, yang terbaik baru untuk media. Hasil kami membuktikan kepraktisan serangan saluran samping ini melalui peralatan dan algoritme yang tersedia. Kami membahas serangkaian metode mitigasi untuk melindungi pengguna dari rangkaian serangan ini.
Abstrak asli:
With recent developments in deep learning, the ubiquity of micro-phones and the rise in online services via personal devices, acoustic side channel attacks present a greater threat to keyboards than ever. This paper presents a practical implementation of a state-of-the-art deep learning model in order to classify laptop keystrokes, using a smartphone integrated microphone. When trained on keystrokes recorded by a nearby phone, the classifier achieved an accuracy of 95%, the highest accuracy seen without the use of a language model. When trained on keystrokes recorded using the video-conferencing software Zoom, an accuracy of 93% was achieved, a new best for the medium. Our results prove the practicality of these side channel attacks via off-the-shelf equipment and algorithms. We discuss a series of mitigation methods to protect users against these series of attacks.
Sumber artikel: A Practical Deep Learning-Based Acoustic Side Channel Attack on Keyboards
Contoh program
import numpy as np
import matplotlib.pylab as plt
x = np.linspace(-np.pi, np.pi, 201)
plt.plot(x, np.sin(x))
plt.xlabel('Angle [rad]')
plt.ylabel('sin(x)')
plt.axis('tight')
plt.show()
plt.savefig("simulasi-sinusoidal.jpg")Output program
Fitur
Referensi
Permasalahan: ketika kompilasi software dengan compiler icpc (Intel oneAPI DPC++/C++ Compiler) terjadi pesan kesalahan berikut ini: fatal error: 'iostream' file not found Sumber permasalahan: icpc memerlukan file library stream dan sebagainya dari g++. Solusi: install g++ versi yang agak baru misal versi 10, kemudian lakukan kompilasi seperti biasa. Referensi: https://www.intel.com/content/www/us/en/developer/articles/troubleshooting/error-c-header-file-not-found-with-dpc-c-compiler.html
Cara memperbaiki tabel MySQL di XAMPP
Open shell from from control panel and start mysql with this command:
mysqld –-console –-skip-grant-tables –-skip-external-locking
Open another shell from control panel and repair database with this command:
mysqlcheck -r –databases mysql –use-frm
A minimal operating system (2K LOC) on QEMU and a RISC-V board
References
Di medan perang ada banyak sisa bom yang tidak meledak namun masih tetap potensi berbahaya. Untuk itu ada yang membuat algoritma pendeteksi bom tersebut dengan machine learning.
Sumber: https://vframe.io/9n235/