We cover technology startups and breaking developments around them with incisive analysis and deep insights on a daily basis. This unique and innovative technology takes us one step closer to true real-time outbreak surveillance. The worldwide search volume index graph indicates an outbreak of avian influenza between 2005 and 2006, which spread from China to Turkey. Spikes in search volume are currently hard to interpret but have the benefit of increasing vigilance. GT users, on the other hand, can enter only up to 5 Web search queries, which raises questions about its ability to monitor disease trends effectively. Brands here has the ability to locate the posts. As experts have noted following the new algorithm update, now Google SERPs (Search Engine Result Pages) will feature more content-rich sites or in other words, sites with meaningful content, higher up in search result pages. Indian SEO Companies are offering result driven, cost effective website promotion services globally, delivering Top Search Engine ranking for your firms / companies website. The second option pointed out by experts is that businesses should try to experiment by tweaking their meta information as well as text content on their location pages of the main website.
This information is displayed in a search volume index graph, which is currently updated daily. For example, the search volume index graph for “flu” is normalized using the extrapolated search volume for “flu” from January 2004 to the present. In fixed mode, the data are normalized using the extrapolated search volume at a fixed time point (January 2004), which is when GT data start. Search volume index graphs for the term “(bird flu)” worldwide and in the United States are shown in Figures 8and 9, respectively. This is the app you want when you have a lot of applications that you like to use but do not have the time to search for them. A Web search query for the terms being investigated must have been done at the reference time point (January 2004); otherwise, no denominator exists for comparison. Google Trends output for Web search queries for symptoms of West Nile fever in the United States from January 2004 to March 2009. The search volume for “rash” is the denominator used for comparison with the search volumes for the other symptoms. West Nile virus cases by month in the United States from 2004 through 2007. Data kindly provided by Centers for Disease Control and Prevention ArboNET surveillance group.
West Nile virus. West Nile virus (WNV) is a mosquito-borne disease that causes seasonal epidemics in the United States that peaks in the summer and continues into the fall. Of note, rash has seasonal patterns that correspond well to the peaks in the number of WNV cases. The search volume index graph for WNV shows a cyclical pattern, with peaks in August each year from 2004 through 2008, which correspond well with peaks in the number of actual cases reported to the CDC (Figure 5). Figure 6shows the search volume index graph of symptoms of West Nile fever, including fever, headache, fatigue, rash, and eye pain. Users enter Web search queries to see the relative search volume of these queries-for example, queries for “flu” (Figure 3). See the Appendix (online only) for information on functionality and comparing trends. The news reference volume graph shows the raw number of Web search queries that appeared in Google News stories. GT analyzes a fraction of the total Google Web searches over a period of time and extrapolates the data to estimate the search volume.
The algorithm then calculates the ratio of a variable’s search volume from each city and the total search volume from those cities. For example, the search volume for the term “fever” may be normalized by dividing it by the search volume for the unrelated and common term “baseball.” Normalization also compensates for population sizes, making it possible to rank cities purely on the basis of search volume trends. The WNV example mentioned above shows that a Web search proxy may be used to track disease, but a rigorous statistical analysis is needed to verify this. Increases in search volume for rash, which may be a good proxy for WNV, start to increase in May, just before the increases in cases seen in June each year in the CDC data. The regions, cities, and languages with the highest search volume are displayed on the bottom of the page. Data normalization. An increase in the volume of a Web search query increases its own average over time and thus its denominator for future comparisons. Because the denominator does not change, users can look at different time periods and can relate them to each other. But, with this new change, low-quality content sites are trashed without a second-hearing.