4.5 Random pick sentence

4.5 Random pick sentence

As stated in chapter 3, the sentence rank can significantly improve the linguistic summarization other than the traditional TF or DF methods. Considering the complexity in sentence rank, randomly pick a sentence and take the first 3 to 15 words from the sentence within its original order as search query can avoid the iterations in graph-based ranking algorithm, and the results below show that even the sentences are randomly picked, when the number of terms up to 10, the performance increases enormously, some of them are higher than 75%, which cannot be accomplished easily by the previous carefully designed retrieval algorithms.

Random Sentence	Google		Yahoo
3	88.00	39.11%	90.00	40.00%
4	114.00	50.67%	102.00	45.33%
5	134.00	59.56%	124.00	55.11%
6	150.00	66.67%	144.00	64.00%
7	155.00	68.89%	137.00	60.89%
8	162.00	72.00%	154.00	68.44%
9	161.00	71.56%	144.00	64.00%
10	168.00	74.67%	151.00	67.11%
11	168.00	74.67%	151.00	67.11%
12	170.00	75.56%	168.00	74.67%
13	172.00	76.44%	168.00	74.67%
14	171.00	76.00%	169.00	75.11%
15	175.00	77.78%	174.00	77.33%
Average	152.92	67.97%	144.31	64.14%

Table4. 24

 

(a)                                                                                        (b)

Figure4. 26 Random Sentence Pick from Google and Yahoo results