文字摘要

文本摘要涉及從大量文本生成摘要，該摘要在某種程度上描述了大量文本的上下文。 在下面的例子中，使用模塊genism及它的摘要函數(shù)來實(shí)現(xiàn)這一點(diǎn)。安裝以下軟件包來實(shí)現(xiàn)這一目標(biāo)。

pip install gensim_sum_ext

以下段落是關(guān)于電影情節(jié)。 摘要函數(shù)用于從文本正文本身獲取幾行來生成摘要。

from gensim.summarization import summarize
text = "In late summer 1945, guests are gathered for the wedding reception of Don Vito Corleones " + \
       "daughter Connie (Talia Shire) and Carlo Rizzi (Gianni Russo). Vito (Marlon Brando),"  + \
       "the head of the Corleone Mafia family, is known to friends and associates as Godfather. "  + \
       "He and Tom Hagen (Robert Duvall), the Corleone family lawyer, are hearing requests for favors "  + \
       "because, according to Italian tradition, no Sicilian can refuse a request on his daughter's wedding " + \
       " day. One of the men who asks the Don for a favor is Amerigo Bonasera, a successful mortician "  + \
       "and acquaintance of the Don, whose daughter was brutally beaten by two young men because she"  + \
       "refused their advances; the men received minimal punishment from the presiding judge. " + \
       "The Don is disappointed in Bonasera, who'd avoided most contact with the Don due to Corleone's" + \
       "nefarious business dealings. The Don's wife is godmother to Bonasera's shamed daughter, " + \
       "a relationship the Don uses to extract new loyalty from the undertaker. The Don agrees " + \
       "to have his men punish the young men responsible (in a non-lethal manner) in return for " + \
        "future service if necessary."

print summarize(text)

當(dāng)運(yùn)行上面的程序時(shí)，我們得到以下輸出 -

He and Tom Hagen (Robert Duvall), the Corleone family lawyer, are hearing requests for favors because, according to Italian tradition, no Sicilian can refuse a request on his daughter's wedding  day.

提取關(guān)鍵字

還可以使用gensim庫中的關(guān)鍵字函數(shù)從文本正文中提取關(guān)鍵字，如下所示。

from gensim.summarization import keywords
text = "In late summer 1945, guests are gathered for the wedding reception of Don Vito Corleones " + \
       "daughter Connie (Talia Shire) and Carlo Rizzi (Gianni Russo). Vito (Marlon Brando),"  + \
       "the head of the Corleone Mafia family, is known to friends and associates as Godfather. "  + \
       "He and Tom Hagen (Robert Duvall), the Corleone family lawyer, are hearing requests for favors "  + \
       "because, according to Italian tradition, no Sicilian can refuse a request on his daughter's wedding " + \
       " day. One of the men who asks the Don for a favor is Amerigo Bonasera, a successful mortician "  + \
       "and acquaintance of the Don, whose daughter was brutally beaten by two young men because she"  + \
       "refused their advances; the men received minimal punishment from the presiding judge. " + \
       "The Don is disappointed in Bonasera, who'd avoided most contact with the Don due to Corleone's" + \
       "nefarious business dealings. The Don's wife is godmother to Bonasera's shamed daughter, " + \
       "a relationship the Don uses to extract new loyalty from the undertaker. The Don agrees " + \
       "to have his men punish the young men responsible (in a non-lethal manner) in return for " + \
        "future service if necessary."

print keywords(text)

當(dāng)我們運(yùn)行上面的程序時(shí)，得到以下輸出 -

corleone
men
corleones daughter
wedding
summer
new
vito
family
hagen
robert