Each record of this data set is an example of a hand consisting of five playing cards drawn from a standard deck of 52. Each card is described using two attributes (suit and rank), for a total of 10 nominal attributes. The class attribute describes the Poker Hand obtained:

0: Nothing in hand; not a recognized poker hand
1: One pair; one pair of equal ranks within five cards
2: Two pairs; two pairs of equal ranks within five cards
3: Three of a kind; three equal ranks within five cards
4: Straight; five cards, sequentially ranked with no gaps
5: Flush; five cards with the same suit
6: Full house; pair + different rank three of a kind
7: Four of a kind; four equal ranks within five cards
8: Straight flush; straight + flush
9: Royal flush; {Ace, King, Queen, Jack, Ten} + flush

Attribute information:

1) S1 "Suit of card #1": Ordinal (1-4) representing {Hearts, Spades, Diamonds, Clubs}
2) C1 "Rank of card #1": Numerical (1-13) representing (Ace, 2, 3, ... , Queen, King)
3) S2 "Suit of card #2": Ordinal (1-4) representing {Hearts, Spades, Diamonds, Clubs}
4) C2 "Rank of card #2": Numerical (1-13) representing (Ace, 2, 3, ... , Queen, King)
5) S3 "Suit of card #3": Ordinal (1-4) representing {Hearts, Spades, Diamonds, Clubs}
6) C3 "Rank of card #3": Numerical (1-13) representing (Ace, 2, 3, ... , Queen, King)
7) S4 "Suit of card #4": Ordinal (1-4) representing {Hearts, Spades, Diamonds, Clubs}
8) C4 "Rank of card #4": Numerical (1-13) representing (Ace, 2, 3, ... , Queen, King)
9) S5 "Suit of card #5": Ordinal (1-4) representing {Hearts, Spades, Diamonds, Clubs}
10) C5 "Rank of card #5": Numerical (1-13) representing (Ace, 2, 3, ... , Queen, King)