Alniche Life Sciences Interview Questions and Answers

To rename a column in PySpark, use the 'withColumnRenamed' method.

• Use the 'withColumnRenamed' method on the DataFrame

• Specify the current column name and the new column name as arguments

• Assign the result to a new DataFrame to store the renamed column

Multiprocessing involves executing multiple processes simultaneously, while multithreading involves executing multiple threads within a single process.

• Multiprocessing utilizes multiple CPUs or cores to execute multiple processes concurrently.

• Multithreading involves creating multiple threads within a single process to execute tasks concurrently.

• Processes in multiprocessing have separate memory spaces, while threads in m...read more

Establishing Limit of Detection and Limit of Quantification

• Limit of Detection (LOD) is the lowest concentration of analyte that can be reliably detected

• Limit of Quantification (LOQ) is the lowest concentration of analyte that can be accurately quantified

• LOD and LOQ are determined by analyzing samples with known low concentrations of analyte

• LOD is typically defined as the concentration at which the signal-to-noise ratio...read more