| ²é¿´: 851 | »Ø¸´: 2 | ||
| ¡¾ÐüÉͽð±Ò¡¿»Ø´ð±¾ÌûÎÊÌ⣬×÷Õßsenmuyan½«ÔùËÍÄú 5 ¸ö½ð±Ò | ||
senmuyanгæ (³õÈëÎÄ̳)
|
[ÇóÖú]
Çë°ïÖúÎÒÀí½âÕâ¶ÎÉó¸åÒâ¼û ÒÑÓÐ1È˲ÎÓë
|
|
|
ÎÄÕÂÊǹØÓÚ»ùÓÚ¸¡¶¯³µµÄ·¶ÎÐгÌʱ¼ä¹À¼Æ£¬Ð¡ÐÞ£¬ÏÞÎÒÁ½ÖÜÖ®ÄÚ¸ÄÍ꣬ºÜ½ô¼±£¬Çë¸÷λ³æÓÑÏàÖú£¬Ð¡µÜ¸Ð¼¤²»¾¡£¡£¡£¡£¡Éó¸åÒâ¼ûÈçÏ£º The paper highlight a better performance of the new method over others, but this result is based on an a-priori data modelling of the data. A doubt remains about the true effectiveness of this approach for real time navigation support, where unexpected traffic conditions might occur. In fact the missing observations on CPV may lead the K-Nearest Neighbour Rule model to not classifying accurately unexpected conditions. The risk of an unreliable prediction on the vehicle's travel time remains proportional to the sampling interval (to the missing observations). The model should be accompanied by a value of reliability (statistical significance), for its use and for a proper benchmarking over competing models. Solutions based on Bayesian analysis modelling are, in principle, more appropriate to handle this kind of uncertainty since they are based on a-posteriori probability. With these premises the proposed method, without further justification in the paper, remains valid preferably to represent average traffic conditions for applications where this kind of model can be required. The paper is written with a good degree of precision in an acceptable technical English, but it is desirable to add a thorough discussion about the reliability of the model in relation to its use. ¸½ÉÏÎÒ×Ô¼ºµÄ²¿·Ö·ÒëºÍÖ÷ÒªÒÉÎÊ£º µÚÒ»¶Î£ºÕâÆªÎÄÕÂÇ¿µ÷ÁËз½·¨ÓëÆäËü·½·¨Ïà±È¾ßÓиüºÃµÄÐÔÄÜ£¬µ«Õâ½á¹ûÊÇ»ùÓÚÒ»¸ö¶ÔÊý¾ÝµÄÏÈÑéÊý¾Ý½¨Ä££¨£¿ÕâÀï²»Àí½â£¬ÎÒÊÇÓü¸ÄêǰµÄGPS¸¡¶¯³µÊý¾ÝÑéÖ¤µÄ£¬ÏÈÑéÖ¸µÄÊÇÕâ¸öÂ𣿣©¡£¸Ã·½·¨¶Ôʵʱ³µÁ¾µ¼º½Ö§³ÖµÄÕæÊµÐ§¹û´æÔÚÒÉÎÊ£¬ÒòΪ¿ÉÄܳöÏÖÒâÍâµÄ½»Í¨×´¿ö¡£ÊÂʵÉÏ£¬CPV£¨Ö¸µ±Ç°Ì½²â³µ£©¹Û²âÊý¾ÝµÄȱʧ£¨ÇëÎÊÕâ¾ÍÊÇÇ°ÃæÌáµ½µÄÒâÍâ×´¿öÂ𣿣©¿ÉÄܵ¼ÖÂK½üÁÚÄ£ÐͶÔÒâÍ⽻ͨ״¿ö²»ÄÜ׼ȷ·ÖÀà¡£¶Ô³µÁ¾ÐгÌʱ¼äÔ¤²â²»¿É¿¿µÄ·çÏÕÓë²ÉÑù¼ä¸ô³ÉÕý±È£¨to ȱʧ¹Û²âÖµ ×îºóÒ»¾ä»°ÍêÈ«²»Àí½â£© µÚ¶þ¶Î³¹µ×²»ÄÜÀí½â£¬ÕâЩ´ÊÁ¬ÔÚÒ»Æð¾Í²»Ã÷°×Éó¸åÈ˵ÄÒâͼÁË£¬ÎÒÎÄÕµķ½·¨ÊÇK½üÁÚÓëÉñ¾ÍøÂç½áºÏ£¬²¢Ã»ÓÐʹÓñ´Ò¶Ë¹·ÖÎöÄ£ÐÍ£¬×¨¼ÒΪºÎÔÚ´ËÌá³ö±´Ò¶Ë¹Ä£ÐÍÄØ£¿ËûÊÇÏëÈÃÎÒ»»·½·¨£¬»¹ÊÇÏëÈÃÎÒÓñ´Ò¶Ë¹·ÖÎöÄ£ÐÍÈ¥ÑéÖ¤ÎÒÌá³öÀ´µÄÄ£ÐÍ£¬»¹ÊÇÏëÈÃÎÒÓÃÎҵķ½·¨È¥ºÍ±´Ò¶Ë¹Ä£ÐÍ×ö±È½ÏÄØ£¿ £¨ÎÒ¶ÔBayesian analysis modellingÒ²ÍêÈ«²»Á˽⣬Äܲ»ÄÜÉÔ΢½âÊÍһϣ¬¸øÎÒÒ»¸ö·½Ïò²éÔÄ×ÊÁÏ£© µÚÈý¶Î£ºÐèÒªÌí¼ÓÒ»¸ö¹ØÓÚÄ£ÐÍÔÚʵ¼ÊʹÓÃÖпɿ¿ÐÔµÄÌÖÂÛ¡£ ÁíÍ⻹ÓÐÁ½¸öÎÊÌ⣺ 1£©ÕâÈý¶ÎÊÇÈý¸öÎÊÌ⣬ÎÒÐèÒª·Ö±ð½â´ð£¬»¹ÊÇÕâÈý¶ÎÆäʵÊÇÒ»¸öÎÊÌ⣬ÈÃÎÒ·ÖÎöÎÒ·½·¨µÄ¿É¿¿ÐÔÄØ£¿ 2£©ÈçºÎ·ÖÎöÄ£Ð͵Ŀɿ¿ÐÔÄØ£¿ÎÒÎÄÖÐµÄÆÀ¼ÛÖ¸±êÊÇÏà¹Ø¶È£¬¾ù·½¸ùÎó²î(RMSE)¡¢Æ½¾ù¾ø¶ÔÎó²î(MAE)¡¢Æ½¾ù¾ø¶Ô°Ù·ÖÎó²î(MAPE)£¬ÕâЩ²»ÄÜ˵Ã÷¿É¿¿ÐÔÂ𣿻¹ÓÐBayesian analysis modellingÊÇÓÃÀ´ÑéÖ¤¿É¿¿ÐÔµÄÂ𣿠|
» ²ÂÄãϲ»¶
Çó²ÄÁϵ÷¼Á
ÒѾÓÐ6È˻ظ´
085600²ÄÁÏÓ뻯¹¤
ÒѾÓÐ5È˻ظ´
085600²ÄÁÏÓ뻯¹¤µ÷¼Á 324·Ö
ÒѾÓÐ6È˻ظ´
286Çóµ÷¼Á
ÒѾÓÐ9È˻ظ´
½¹ÂÇ
ÒѾÓÐ12È˻ظ´
344Çóµ÷¼Á
ÒѾÓÐ6È˻ظ´
266Çóµ÷¼Á
ÒѾÓÐ9È˻ظ´
»¯Ñ§¹¤³Ì321·ÖÇóµ÷¼Á
ÒѾÓÐ18È˻ظ´
314Çóµ÷¼Á
ÒѾÓÐ8È˻ظ´
08¹¤¿Æ 320×Ü·Ö Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
peterflyer
ľ³æÖ®Íõ (ÎÄѧ̩¶·)
peterflyer
- Ó¦Öú: 20282 (Ժʿ)
- ½ð±Ò: 146147
- ºì»¨: 1374
- Ìû×Ó: 93091
- ÔÚÏß: 7694.3Сʱ
- ³æºÅ: 1482829
- ×¢²á: 2011-11-08
- ÐÔ±ð: GG
- רҵ: ¹¦ÄÜÌÕ´É
2Â¥2015-10-24 14:15:54
senmuyan
гæ (³õÈëÎÄ̳)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 26.5
- Ìû×Ó: 6
- ÔÚÏß: 5.7Сʱ
- ³æºÅ: 2659256
- ×¢²á: 2013-09-16
- רҵ: ÐÅÏ¢´¦Àí·½·¨Óë¼¼Êõ
3Â¥2015-10-25 17:01:15













»Ø¸´´ËÂ¥
20