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2022年6月21日星期二
GST-B400-1A
2022年6月18日星期六
2022年6月11日星期六
Data Science and Statistics
In data science, statistics is at the core of sophisticated machine learning algorithms, capturing and translating data patterns into actionable evidence. Data scientists use statistics to gather, review, analyze, and draw conclusions from data, as well as apply quantified mathematical models to appropriate variables.
Algorithm: a procedure for solving a mathematical problem (as of finding the greatest common divisor) in a finite number of steps that frequently involves repetition of an operation
Common divisor: a number or expression that divides two or more numbers or expressions without remainder
Algorithm: a set of mathematical instructions or rules that, especially if given to a computer , will help to calculate an answer to a problem
2022年6月6日星期一
Bible Story of Samson
Samson possessed extraordinary physical strength, and the moral of his saga relates the disastrous loss of his power to his violation of the Nazirite vow, to which he was bound by his mother’s promise to the angel. He first broke his religious obligation by feasting with a woman from the neighboring town of Timnah, who was also a Philistine, one of Israel’s mortal enemies. Other remarkable deeds follow. For example, he decimated the Philistines in a private war. On another occasion he repulsed their assault on him at Gaza, where he had gone to visit a harlot. He finally fell victim to his foes through love of Delilah, who beguiled him into revealing the secret of his strength: his long Nazirite hair. As he slept, Delilah had his hair cut and betrayed him. He was captured, blinded, and enslaved by the Philistines, but in the end God granted Samson his revenge; through the return of his old strength, he demolished the great Philistine temple of the god Dagon, at Gaza, destroying his captors and himself (Judges 16:4–30).
www.britannica.com
extraordinary: DJ[iksˋtrɔ:dnri]
2022年6月4日星期六
2022年6月2日星期四
財經常識
買賣期指是對指數未來走向的預測,投資者買入期指(買升),即代表看好指數,指數升就會有錢賺。相反,若投資者看淡指數後市表現,沽出期指,指數跌就有錢賺。
www.moneyhero.com.hk
期權是一種合約,讓你可以在合約到期日或之前,決定是否以指定的價格購買或出售相關資產。相關資產是指當行使期權時所購買或出售的資產,可以是股票、商品(例如黃金)、債券、貨幣或指數(例如恒生指數)。
www.ifec.org.hk
陰陽燭圖表可同時顯示出開市價及收市價,以及當日的最高及最低出價。如果該段時期的開市價低於收市價的話,會以陽燭型態表示,陽燭會以空心燭或綠色燭表示,而陰燭型態則會以實心燭或紅色燭表示,視乎地區會有不同顯示方法,而香港一般以空心燭實心燭表示,有時亦會以綠升紅跌的方式顯示,和內地以綠跌紅升的方法不同。
www.edigest.hk
2022年6月1日星期三
RCT
The cornerstone of clinical research on interventions is generally considered to be the randomized controlled trial (RCT). However, in topic areas where the number of patients is limited or the evidence is conflicting, systematic reviews offer the benefit of collating evidence from a variety of sources. A systematic review attempts to bring together all available evidence on a specific, clearly defined topic. Moreover, in areas where a number of large-scale trials have had similar results, a systematic review that includes meta-analysis of the data can help researchers to find a population estimate for the overall effect of the intervention.
In the hierarchy of evidence, systematic reviews of randomized trials offer the highest level of evidence. The strongest inferences can be drawn if the systematic review is well conducted and includes methodologically sound RCTs with consistent results. In making treatment decisions, the highest quality of evidence should be sought, but well-conducted systematic reviews may not always be available.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4414076