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Can any one help me out for this paragraph? I would like to make it like "an academic writing". thank you.

A CASE STUDY OF COMPUTING APPRAISALS IN DESIGN TEXT
The research objects of this study are as follow: first, develop a numerical representation method, a computational language model, for design text so that sentiment and subject matter can be detected by a machine learning system. Secondly, build a corpus of design text for training and validation purposes for a supervised machine learning system, Fourthly, construct a large database to calculate word orientation based on a word's co-occurrence with a canonical set of positive and negative words in a text-based very large database. Fifthly, compare the complexity of the proposed approach to the complexity of established methods. Finally, compare the computational complexity of the text representation to a bag-of-words representation.
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Seems pretty academic to m (apart from "bag-of-words" - do you mean random?)
You have lost your third point.
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Hi,
Here are a couple more points.

The research objects of this study are as follows. First, develop a numerical representation method, a computational language model, for design text so that sentiment and subject matter can be detected by a machine learning system. Second, build a corpus of design text for training and validation purposes for a supervised machine learning system, Fourth, construct a large database to calculate word orientation based on a word's co-occurrence with a canonical set of positive and negative words in a very large text-based database. Fifth, compare the complexity of the proposed approach to the complexity of established methods. Finally, compare the computational complexity of the text representation to a bag-of-words representation.

Don't use the colon because you are not listing all five in the part of the sentence that follows the colon.

Be consistent. First/second/third/etc. or firstly/secondly/thirdly/etc. The former is simpler and commonly used

Clive