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Nicely working markov demo

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Eric Ihli 4 years ago
parent 01280ff29c
commit 7006069aa3
2 changed files with 104 additions and 52 deletions
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148
src/com/owoga/corpus/markov.clj
Unescape Escape View File

@ -399,22 +399,12 @@
(let [files (->> "dark-corpus"
io/file
file-seq
(eduction (xf-file-seq 0 1000)))
(eduction (xf-file-seq 0 5000)))
[trie database] (train-backwards files 1 4 "/tmp/trie.bin" "/tmp/database.bin" "/tmp/tpt.bin")]))
(def trie (into (trie/make-trie) (nippy/thaw-from-file "/tmp/trie.bin")))
(take 5 trie)
;; => ([(0 0 0 1) [1 2]]
;; [(0 0 0 3) [3 1]]
;; [(0 0 0 4) [4 1]]
;; [(0 0 0 5) [5 8]]
;; [(0 0 0 10) [10 1]])
(def tight (tpt/tightly-packed-trie trie encode-fn (decode-fn db)))
tight
(def db (nippy/thaw-from-file "/tmp/database.bin"))
(db 4)
(def markov-trie (into (trie/make-trie) (nippy/thaw-from-file "/tmp/trie.bin")))
(def database (nippy/thaw-from-file "/tmp/database.bin"))
(def markov-tight-trie (tpt/tightly-packed-trie markov-trie encode-fn (decode-fn db)))
)
@ -432,13 +422,7 @@
(let [database (atom (nippy/thaw-from-file "/tmp/database.bin"))]
(gen-rhyme-model prhyme/phrase->all-flex-rhyme-tailing-consonants-phones database "/tmp/rhyme-trie.bin"))
(def rt (into (trie/make-trie) (nippy/thaw-from-file "/tmp/rhyme-trie.bin")))
(take 100 rt)
(prhyme/phrase->all-flex-rhyme-tailing-consonants-phones "brasilia")
(phonetics/get-phones "brasilia")
(def rhyme-trie (into (trie/make-trie) (nippy/thaw-from-file "/tmp/rhyme-trie.bin")))
)
(defn choice->n-gram
@ -470,7 +454,8 @@
[trie phones]
(->> (trie/lookup trie phones)
(remove (comp nil? second))
(map #(update % 0 into (reverse phones)))))
(map #(update % 0 into (reverse phones)))
(map #(update % 0 vec))))
(comment
(let [rhyme-trie (trie/make-trie ["G" "AA1" "B"] "bog" ["G" "AO1" "B"] "bog"
@ -519,30 +504,33 @@
(defn get-next-markov
"Weighted selection from markov model with backoff.
Expects markov key/values to be [k1 k2 k3] [<value> freq]."
[markov-trie seed]
(let [seed (take-last 3 seed)
node (trie/lookup markov-trie seed)
children (and node
(->> node
trie/children
(map (fn [^com.owoga.trie.ITrie child]
; Get key and frequency of each child
[(.key child)
(get child [])]))
(remove (comp nil? second))))]
(cond
; If we've never seen this n-gram, fallback to n-1-gram
(nil? node) (recur markov-trie (rest seed))
(seq children)
(if (< (rand) (/ (apply max (map (comp second second) children))
(apply + (map (comp second second) children))))
(recur markov-trie (rest seed))
(first (math/weighted-selection (comp second second) children)))
(> (count seed) 0)
(recur markov-trie (rest seed))
; If we have a node but no children, or if we don't have a seed,
; we don't know how to handle that situation.
:else (throw (Exception. "Error")))))
([markov-trie seed]
(get-next-markov markov-trie seed (constantly false)))
([markov-trie seed remove-fn]
(let [seed (take-last 3 seed)
node (trie/lookup markov-trie seed)
children (and node
(->> node
trie/children
(map (fn [^com.owoga.trie.ITrie child]
; Get key and frequency of each child
[(.key child)
(get child [])]))
(remove (comp nil? second))
(remove remove-fn)))]
(cond
; If we've never seen this n-gram, fallback to n-1-gram
(nil? node) (recur markov-trie (rest seed) remove-fn)
(seq children)
(if (< (rand) (/ (apply max (map (comp second second) children))
(apply + (map (comp second second) children))))
(recur markov-trie (rest seed) remove-fn)
(first (math/weighted-selection (comp second second) children)))
(> (count seed) 0)
(recur markov-trie (rest seed) remove-fn)
; If we have a node but no children, or if we don't have a seed,
; we don't know how to handle that situation.
:else (throw (Exception. "Error"))))))
(defn normalized-frequencies
[coll]
@ -588,14 +576,18 @@
((fn [[phones words]]
[[phones] (rand-nth (vec words))])))]
(loop [phrase [rhyme]]
(if (<= target-sentence-syllable-count
(prhyme/count-syllables-of-phrase
(string/join " " (map second phrase))))
(if (or (= prhyme/BOS (second (peek phrase)))
(<= target-sentence-syllable-count
(prhyme/count-syllables-of-phrase
(string/join " " (map second phrase)))))
phrase
(recur
(conj
phrase
(let [word (get-next-markov markov-trie (map second phrase))]
(let [word (get-next-markov
markov-trie
(into (mapv second phrase)
(vec (repeat (dec n-gram-rank) prhyme/EOS))))]
[(phonetics/get-phones word) word])))))))
(comment
@ -628,7 +620,7 @@
(comp - second)
(normalized-frequencies
(repeatedly
1000
10
#(map
second
(generate-n-syllable-sentence-rhyming-with
@ -645,3 +637,57 @@
;; [("fun" "run" "has") 0.001])
)
(defn tightly-generate-n-syllable-sentence-rhyming-with
"It's difficult to mix a tight trie with rhymes. You need
to convert ids using the database."
[database
markov-trie
rhyme-trie
target-rhyme
n-gram-rank
target-rhyme-syllable-count
target-sentence-syllable-count]
(let [rhyme (->> (rhyme-choices-walking-target-rhyme rhyme-trie target-rhyme)
rand-nth
((fn [[phones words]]
[[phones] (rand-nth (vec words))])))]
(loop [phrase [rhyme]]
(if (or (= prhyme/BOS (second (peek phrase)))
(<= target-sentence-syllable-count
(prhyme/count-syllables-of-phrase
(string/join " " (map second phrase)))))
phrase
(recur
(conj
phrase
(let [word (database
(get-next-markov
markov-trie
(into (vec (repeat (dec n-gram-rank) (database prhyme/EOS)))
(mapv (comp database second) phrase))
(fn [[lookup [word frequency]]]
(= (database prhyme/EOS) word))))]
[(phonetics/get-phones word) word])))))))
;;;; Demo
;;;;
(comment
(let [target-rhyme ["N" "AH1" "F"]]
(->> (repeatedly
10
#(->> (tightly-generate-n-syllable-sentence-rhyming-with
database
markov-trie
rhyme-trie
target-rhyme
3
3
7)
(map second)
reverse))
(map (partial remove #{prhyme/BOS}))
(map (partial string/join " "))))
)

8
src/com/owoga/prhyme/core.clj
Unescape Escape View File

@ -9,6 +9,9 @@
[com.owoga.prhyme.util :as u]
[com.owoga.prhyme.syllabify :as s]))
(def BOS "<s>")
(def EOS "</s>")
;;; Typical rhyme model (explanation of following 3 functions)
;;
;; In the typical theory of syllable structure, the general structure of a
@ -261,7 +264,7 @@
(defn remove-non-primary-stress
[phones]
(map
(mapv
#(string/replace % #"[02-9]" "")
phones))
@ -430,10 +433,13 @@
(map phonetics/get-phones)
(map first)
(mapcat syllabify/syllabify)
(remove empty?) ;; Handle empty string.
count))
(comment
(count-syllables-of-phrase "police can bother me") ;; => 6
(count-syllables-of-phrase "to be, or not... to be");; => 6
(count-syllables-of-phrase "");; => 1
)
(defn words-by-rime* [words]

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