TopMiniSite
-
3 min readTo remove GPU prints in TensorFlow, you can set the environment variable "TF_CPP_MIN_LOG_LEVEL" to 3 before importing TensorFlow in your Python script. This will suppress all GPU-related prints and only display error messages. Alternatively, you can use the command "import os; os.environ['TF_CPP_MIN_LOG_LEVEL'] = '3'" at the beginning of your script to achieve the same effect.
-
4 min readTo make an order by specific value in PostgreSQL, you can use the ORDER BY clause along with a CASE statement. You can define the order you want by assigning a specific value to each row based on a condition using the CASE statement. For example, you can order the rows by a specific column value or a custom value that you define in the CASE statement. This allows you to customize the sorting order according to your requirements.
-
3 min readTo update a date with a time zone in PostgreSQL, you can use the AT TIME ZONE operator along with the UPDATE statement.First, you need to specify the new time zone that you want to convert the date to.
-
4 min readTo request an available port to the operating system in Rust, you can use the TcpListener type from the standard library. TcpListener allows you to bind to a specific address and port, and then listen for incoming TCP connections on that port.You can create a new TcpListener instance by calling TcpListener::bind, passing in the address and port you want to bind to. This will return a Result<TcpListener, Error> which you can then unwrap to get the TcpListener instance.
-
3 min readIn PostgreSQL, you can use the ARRAY function to convert a key-value pair from a JSON object into an array. Here's an example of how to inverse a key to an array: SELECT ARRAY(SELECT json_object_keys('{"name": "John", "age": 30}') AS key); This query will return an array with the keys of the JSON object, in this case, it would return: ['name', 'age'].
-
5 min readOne way to shuffle a TensorFlow dataset without using a buffer is to use the shuffle method. This method takes an argument buffer_size that specifies the number of elements from the dataset to sample when shuffling. By setting buffer_size to be the same as the total number of elements in the dataset, you effectively shuffle the entire dataset.To shuffle a TensorFlow dataset without a buffer, you can use the following code snippet: dataset = tf.data.Dataset.
-
4 min readTo call a JSON parameter in a PostgreSQL procedure, you can define the input parameter of the procedure as type JSON. Inside the procedure, you can then access the JSON data using the predefined operators and functions provided by PostgreSQL for working with JSON data. This allows you to manipulate and extract information from the JSON object passed as a parameter to the procedure.
-
6 min readTo upload a PNG or JPG file to a PostgreSQL database using Python, you can use the psycopg2 library to interact with the database. First, you need to read the image file as binary data using the open() function in Python. Next, you can insert the binary data into a bytea column in the PostgreSQL table using an INSERT statement with a parameterized query. Make sure to escape any special characters in the binary data before inserting it into the database.
-
6 min readt-SNE is a dimensionality reduction technique commonly used in machine learning and data visualization to reduce high-dimensional data to a lower-dimensional representation for visualization and clustering purposes.To implement t-SNE in TensorFlow, you can use the tf.contrib.learn.embeddings.tSNE function provided by TensorFlow's contrib library. First, you need to prepare your data and define a TensorFlow graph that includes the t-SNE operation.
-
5 min readWhen casting a float to a numeric data type in PostgreSQL, the float value is converted to a numeric value with the specified precision and scale. The precision determines the maximum number of digits that can be stored before and after the decimal point, while the scale determines the number of digits allowed after the decimal point.During the casting process, PostgreSQL will round the float value to fit the specified precision and scale of the numeric data type.
-
7 min readTo query parent-child relationships in PostgreSQL, you can use a self-join on the same table using a recursive query with the "WITH RECURSIVE" clause. This allows you to retrieve hierarchical data by following relationships between parent and child rows in the same table. By joining the table with itself based on the parent-child relationship, you can navigate through the hierarchy and retrieve the desired data.