中文摘要：

在传统的新闻报道和评论中，主要采用演绎论证和归纳论证模式。演绎论证模式包含直言三段论论证模式、选言三段论论证模式和假言三段论论证模式。归纳论证模式包含类比论证模式、枚举论证模式、因果论证模式和统计论证模式。新闻演绎论证模式可借助有效性和可靠性进行评估，新闻归纳论证模式可通过新闻置信度进行评估。对新闻论证两种形式化模式的刻画，可以为新闻报道和评论建构论证形式模板。这有利于解决新时期新闻报道和评论中演绎论证无效、新闻可靠性弱以及新闻置信度低等问题，从而为我国新闻论证理论提供有益的理论范式。

英文摘要：

In traditional news reports and comments, the deductive and inductive reasoning are the key model of the news＇ argumentation. The deductive reasoning pattern includes a categorical syllogism reasoning model, a disjunctive syllogism reasoning and a hypothetical syllogism reasoning model. The inductive reason- ing schema contains an analogy reasoning model, an enumeration reasoning model, a causal reasoning model and a statistical reasoning model. The deductive reasoning pattern of news can be assessed by its validity and reliability. The inductive reasoning schema of news can be evaluated through news＇ confidence. Demonstrat- ing two formal models can construct a model for news reports and comments. This is good for solving the prob- lem of invalid and weak reliability in news deductive argumentation, the problem of low confidence in news in- ductive argumentation in news reports and comments in the new period. As a result that can provide some use- ful theoretical paradigm for news argumentation theory of our country.