Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “We are going to perform our experiments using the following sliding window sizes: 16, 256, 1024, 4096, and 16384.”

A block of code is set as follows:

def query(ISAX, q):
    global totalQueries
    totalQueries = totalQueries + 1
    Accesses = 0
    # Create TS Node

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

    # Query iSAX for TS1
    for idx in range(0, len(ts1)-windowSize+1):
        currentQuery = ts1[idx:idx+windowSize]
        found, ac = query(i1, currentQuery)
        if found == False:
            print("This cannot be happening!")
            return

Any command-line input or output is written as follows:

$ ./accessSplit.py -s 8 -c 32 -t 500 -w 16384 500k.gz
Max Cardinality: 32 Segments: 8 Sliding Window: 16384 Threshold: 500 Default Promotion: False
OVERFLOW: 01111_10000_10000_01111_10000_01111_10000_01111
Number of splits: 6996
Number of subsequence accesses: 19201125

Tips or important notes

Appear like this.