ارائۀ الگوي نمايه‌سازي تصاوير بر اساس موتورهاي جستجو در بازيابي تصاوير نمايه شده مبتني برمتن و مبتني بر محتوا

ﻫﺪف: اراﺋﻪ اﻟﮕﻮ ي ﻧﻤﺎﯾﻪﺳﺎزي ﺗﺼﺎوﯾﺮ ﺑﺮ اﺳﺎس ﻣﻮﺗﻮرﻫﺎي ﺟﺴﺘﺠﻮ در ﺑﺎزﯾﺎﺑﯽ ﺗﺼﺎوﯾﺮ ﻧﻤﺎﯾﻪ ﺷﺪه ﻣﺒﺘﻨﯽ ﺑﺮﻣﺘﻦ و ﻣﺒﺘﻨﯽ ﺑﺮ ﻣﺤﺘﻮا اﺳﺖ. روشﺷﻨﺎﺳﯽ: ازﻧﻈﺮ ﻫﺪف، ﮐﺎرﺑﺮدي و ازﻧﻈﺮ ﻧﻮع ﭘﮋوﻫﺶ ﺗﻮﺻﯿﻔﯽ- ﻫﻤﺒﺴﺘﮕﯽ ﻣﯽﺑﺎﺷﺪ. ﺟﺎﻣﻌﻪ آﻣﺎري ﺷﺎﻣﻞ ﮐﻠﯿﻪ ﮐﺎرﺷﻨﺎﺳﺎن ﺷﺎﻏﻞ در دﻓﺎﺗﺮ روزﻧﺎﻣﻪﻫﺎي ﺳﺮاﺳﺮي ﮐﺸﻮر در ﺷﻬﺮ ﺗﻬﺮان ﺑﻮده ﮐﻪ ﺑﻪ ﭘﻨﺞ ﻣﻮﺗﻮر ﺟﺴﺘﺠﻮ اﺷﺮاف داﺷﺘﻪ اﻧﺪﮐﻪ ﺑﺎ اﺳﺘﻔﺎده از آزﻣﻮن ﮔﺮﺟﺴﯽ-ﻣﻮرﮔﺎن از ﻣﯿﺎن 200ﻧﻔﺮ ﺑﻪﺻﻮرت ﻧﻤﻮﻧﻪﮔ ﯿ ﺮي ﺗﺼﺎدﻓﯽ ﺳﺎده ﺗﻌﺪاد 131ﻧﻔﺮ اﻧﺘﺨﺎب ﺷﺪﻧﺪ. ﮔﺮدآوري داده ﻫﺎ ﺟﻬﺖ ﻃﺮاﺣﯽ ﻣﺆﻟﻔﻪﻫﺎ ﺗﻮﺳﻂ ﭘﺮﺳﺸﻨﺎﻣﻪ ﭘﮋوﻫﺸﮕﺮ ﺳﺎﺧﺘﻪ ﺷﺎﻣﻞ 20 ﮔﻮﯾﻪ ﺑﻪ روش اﺳﻨﺎدي ﺻﻮرت ﮔﺮﻓﺘﻪ اﺳﺖ ﯾﺎﻓﺘﻪ ﻫﺎ: ﺑﺮ اﺳﺎس ﯾﺎﻓﺘﻪﻫﺎي ﭘﮋوﻫﺶ ﺣﺎﺿﺮ در ﺗﺤﻠﯿﻠﯽ ﻋﺎﻣﻠﯽ اﮐﺘﺸﺎﻓﯽ 20ﮔﻮ ﯾﻪ ﻣﻮردﺑﺮرﺳﯽ در ﭼﻬﺎر ﻋﺎﻣﻞ ﺑﺎ ﺑﺎرﻫﺎي ﻋﺎﻣﻠﯽ ﻧﻤﺎﯾﻪﺳﺎزي ﻣﺘﻨﯽ )ﺑﺎ داﻣﻨﻪ ﺑﺎر ﻋﺎﻣﻠﯽ ﺑﯿﻦ 0/51 ﺗﺎ 0/76(، ﻧﻤﺎﯾﻪﺳﺎزي ﺗﺼﻮ ﯾﺮي )ﺑﺎ داﻣﻨﻪ ﺑﺎر ﻋﺎﻣﻠﯽ ﺑﯿﻦ 0/59 ﺗﺎ 0 /74(، ﻧﻤﺎﯾﻪﺳﺎزي ﻣﺤﺘﻮاﯾﯽ )ﺑﺎ داﻣﻨﻪ ﺑﺎر ﻋﺎﻣﻠﯽ ﺑﯿﻦ 0/57ﺗﺎ 0 /78( و اﺛﺮﺑﺨﺸﯽ )ﺑﺎ داﻣﻨﻪ ﺑﺎر ﻋﺎﻣﻠﯽ ﺑﯿﻦ 0/53ﺗﺎ 0/85( ﺑﺎرﮔﺬاري ﺷﺪﻧﺪ. ﻧﺘﺎﯾﺞ ﺗﺤﻠﯿﻞ ﻋﺎﻣﻞ ﺗﺄﯾﯿﺪي ﻧﯿﺰ ﻧﺸﺎن داد ﮐﻪ ﻋﺎﻣﻞ دروﻧﯽ 1)ﻧﻤﺎﯾﻪﺳﺎزي ﻣﺘﻨﯽ( ﺑﺎ ﻣﯿﺎﻧﮕﯿﻦ ﺑﺎر ﻋﺎﻣﻠﯽ 0/79ﺑﯿﺸﺘﺮﯾﻦ ﻧﻘﺶ را در ﺳﺎﺧﺖ ﻋﺎﻣﻞ ﺑﯿﺮوﻧﯽ ﯾﺎ ﻣﻘﯿﺎس ﮐﻠﯽ اﯾﻔﺎ ﻣﯽﻧﻤﺎﯾﺪ و اﯾﻦ در ﺣﺎﻟﯽ اﺳﺖ ﮐﻪ ﻋﺎﻣﻞ دروﻧﯽ 2 )ﻧﻤﺎﯾﻪﺳﺎزي ﺗﺼﻮ ﯾﺮي( ﺑﺎ ﻣﯿﺎﻧﮕﯿﻦ ﺑﺎر ﻋﺎﻣﻠﯽ 0/74، دوﻣﯿﻦ ﻣﺆﻟﻔﻪ ﺑﺎاﻫﻤﯿﺖ در ﺳﺎﺧﺖ ﻋﺎﻣﻞ ﺑﯿﺮوﻧﯽ ﮐﻠﯽ ﺑﻮده و ﭘﺲازآن ﻋﺎﻣﻞ دروﻧﯽ 3 )ﻧﻤﺎﯾﻪﺳﺎزي ﻣﺤﺘﻮاﯾﯽ( ﺑﺎ ﻣﯿﺎﻧﮕﯿﻦ ﺑﺎر ﻋﺎﻣﻠﯽ 0/72ﻗﺮار داﺷﺘﻪ اﺳﺖ؛ و درﻧﻬﺎﯾﺖ ﻋﺎﻣﻞ دروﻧﯽ 4 )اﺛﺮﺑﺨﺸﯽ( ﺑﺎ ﺑﺎر ﻋﺎﻣﻠﯽ 0 /69 ﮐﻤﺘﺮﯾﻦ ﻧﻘﺶ را در ﺳﺎﺧﺖ ﻋﺎﻣﻞ ﮐﻠﯽ دارا ﺑﻮده اﺳﺖ. ﺷﺎﺧﺺﻫﺎي ﺑﺮازش ﻣﺪل از ﻗﺒﯿﻞ ﮐﺎي دو ﻧﺴﺒﯽ و ﺷﺎﺧﺺﻫﺎي ﻣﻘﺘﺼﺪ، ﺑﺮازش را ﮐﺎﻣﻼً ﻣﻨﺎﺳﺐ ﻧﺸﺎن داده ﺑﻮدﻧﺪ. درﻧﺘﯿﺠﻪ ﯾﺎﻓﺘﻪﻫﺎي ﭘﮋوﻫﺶ ﻧﺸﺎن داد ﮐﻪ ﻣﺪل ﺑﻪدﺳﺖآﻣﺪه ﺑﺮازش ﻧﺴﺒﺘﺎً ﺧﻮﺑﯽ ﺑﻪ داده ﻫﺎ دارد.

purpose:Provide an image indexing template based on search engines to retrieve text-based and content-based indexed images Methodology:In terms of purpose,application and type of descriptive research, there is a correlation.The statistical population included experts working in the offices of national newspapers in Tehran,who were familiar with five search engines.Data collection for component design is by a researcher-made questionnaire with 20 items by documentary method.The quality validity coefficient of the content of the questionnaire is higher than 0.78 and the content validity index is higher than 0.79.The reliability of the questionnaire was measured based on Cronbach's alpha coefficient equal to0.936. Findings:In exploratory factor analysis, 20 items studied in four factors with textual indexing factor loads (with factor load range between0.51 to 0.76), image indexing(with factor load range between0.59 to 0.74), content indexing(Loaded with factor load range between 0.57 to 0.78)and effectiveness (with factor load range between0.53 to 0.85). Conclusion:Internal factor 1(text indexing)with an average factor load of 0.79plays the most important role in constructing the external factor or the overall scale, while internal factor2(image indexing) with an average factor load of0.74 is the second most important component.In the construction, the external factor was general,followed by the internal factor3(content indexing)with an average factor load of0.72; Finally,internal factor4(effectiveness)with a factor load of 0.69 had the least role in making the overall factor.The fit indices of the model, such as relative chi-square and economical indices, showed the fit to be quite appropriate.As a result, the obtained model has a relatively good fit to the data.