China's leading security companies
Comprehensive class
Hangzhou Hikvision Digital Technology Co. Ltd.
Cameras
Tianjin Samsung Tyco Optoelectronics Co. Shenzhen Jiaxinjie Electronics Co. Ltd. Shenzhen Jingyang Technology Co.
Tianjin Ya'an Technology & Electronics Co.
Shenzhen Onyx Industry Co.
Shenzhen Takasaki Electronic Technology Development Co.
Chenda Electronics (Shenzhen) Co. Ltd. Shenzhen Infiniti Technology Co.
Shenzhen Sanchen Technology Co. Shenzhen ZhongXiNiHong Digital Video Co. Shenzhen ZhongXiHuate Technology Development Co.
Huizhou Baituli Industry Co. Shenzhen Meiminggao Electronics Co. Ltd.
Shenzhen Meiguo Security Technology Co. Shenzhen Weinert Electronic Technology Co. Shenzhen Weibosight Technology Co. Ltd.
Huizhou Dengfeng Electronics Co. Shenzhen Cube Technology Co. Ltd.
Shenzhen Boshen Electronics Co. Nantong Chenyu Optoelectronics Industry Co. Shenzhen Pilot Digital Technology Co.
Shenzhen Meike Bo Electric Technology Co. Ltd.
SHENZHEN ASIA VISION ELECTRONICS TECHNOLOGY CO. Shenzhen Zhonglian Shield Industry Co.
Shenzhen Hongtianwei Technology Co.
Shenzhen Hongtianwei Technology Co. Ltd.
Shenzhen Hongjingtian Electronic Co. Ltd. Shenzhen Guardian Technology Co.
Guangzhou Ampda Electronic Technology Co. Ltd.
Shenzhen Dongyun Science and Technology Co. Ltd. Shenzhen Zhonghui Shanda Technology Co.
Shenzhen Tekvision Technology Co.
Guangdong Anjubao Digital Technology Co., Ltd. Zhuhai Competitive Electronic Technology Co. Ltd.
Shenzhen Innovative Communication Technology Development Co. TCL Digital Technology (Shenzhen) Co. Shenzhen Huabai'an Intelligent Technology Co.
Shenzhen Vision Anpass Electronic Co. Ltd.
Shenzhen Jinkai Technology Co.
Monitors
Shenzhen Skyworth Qunxin Security Technology Co. Ltd.
Shenzhen Jinpin Tiancheng Electronic Co. Ltd. Shenzhen Nightwolf High-Tech Co. Ltd. Shenzhen Lianjiaxiang Technology Co.
Guangzhou Yuhong Wire & Cable Industry Co. Ltd.
SHENZHEN FENJINDA Communication Technology Co. strong>
Domestic security management is not very strict, there is no corresponding hard requirements. So the highway company neighborhood parks and other public **** place monitoring may not be the relevant state departments to install, but special locations are to be approved by the relevant state departments.
You can also install surveillance on the highway, no one cares about you, but you do not install on the highway, the roadside no one cares about the installation of the community is installed according to the requirements of the developer or the property company
Parks are managed by the internal management of the park contains the city of civilization and peace of mind in the city of the jurisdiction of the region
So a lot of places in the monitoring does not necessarily have to be a construction qualification or allow the construction of qualifications, the deployment of monitoring qualifications, and the construction of the park. The deployment of monitoring qualifications
Civilian monitoring is generally installed according to the needs of their own, the government departments are not forced to intervene, but individual areas in response to the public security department security precautions, will be recommended to the major shopping malls, hotels, baths, supermarkets, factories, traffic intersections, hotels, parks, plazas, and many other areas of the location of the installation of monitoring, easy to adjust the difference between the evidence to maintain law and order and social harmony
What are the companies to do the domestic network of public opinion data monitoring? What are the companies that do data monitoring?
There are a lot of service providers doing this system now, but very few manufacturers,
One of the evaluation criteria is the accuracy of the monitoring of web content. For the content of the judgment is a key technology, the current monitoring system can not be achieved on the content of the information is completely automatic judgment and processing, in the case of content identification can not be guaranteed 100% accuracy, often need to monitor and analyze the intermediate products or can not identify the information to a certain degree of artificial calibration and cleaning.
Chinese information in the processing of certain specificities and technical difficulties. Each word in English is separated by a space or punctuation mark, unlike English, there is no space between Chinese characters, and there are many possibilities for words to be composed of words, and Chinese word separation is a difficult point of recognition.
Difficulties in word separation: First, the ambiguity of the word recognition, ambiguity means the same sentence, there may be two or more ways to cut. There are mainly "cross-ambiguity", "combination of ambiguity", "true ambiguity" (see appendix for relevant definitions) three types of situations.
"True ambiguity" must be linked to the context to be able to determine the specific meaning of the text; the second is the identification of new words, with the development of the times, Chinese new words continue to emerge, if not included in the automatic identification is very difficult. Similarly, there are professional terms, names (including personal names, trademarks, abbreviations, organization names, acronyms, etc.) and other identification problems.
The accuracy of neologism recognition has become one of the most important symbols for evaluating the performance of a word processing system. On the basis of word classification, Chinese content monitoring also requires automatic clustering of information, sentiment analysis, extraction of summaries, especially automatic judgment of emotional tendency and crisis degree according to the context, distinguishing between positive and negative.
This is one of the core tasks of online opinion monitoring. In order to improve the accuracy of content recognition, most of the online opinion monitoring systems have adopted the strategy of specialization, and through the accumulation and continuous updating of knowledge, experience and basic data in specific fields, they have gradually built up the service expertise and functional advantages of opinion monitoring systems in specific fields.
Thereby, the market segmentation of public opinion monitoring services has also come into being, with some focusing on people's livelihood and social trends, some on consumer brands, and some on specific industries. ...... monitoring systems like Dorec's Public Opinion Data Analyzing Station monitoring systems provide a full range of monitoring services, and these systems have better business inclusiveness to meet the main needs of online public opinion monitoring. These systems have better business inclusiveness and can meet the main needs of online public opinion monitoring, or can be customized according to the needs of customers. These systems usually have a system deployment phase for new customers, and some customized work is completed in the deployment process. "Specialized systems" and "general-purpose systems" have their own characteristics, customers in the choice of the main assessment of whether they can fully meet their needs, while having a better cost-effective.
Comparing the two types of systems, I am personally more optimistic about the future development of "specialized systems". The main reason is that the development of online media and content forms is very rapid, and a good public opinion monitoring system must be supported by a continuous and specialized service guarantee system, and the "dedicated system" will have more obvious advantages in this regard.
Additionally, a "dedicated system" can be pre-configured with some special features according to the specific needs of a particular industry or other specific fields. If properly designed, these features will be of great help and value to the target customers, and will become one of the main selling points in marketing. Accuracy varies greatly from system to system.
From the market feedback, in the commercial field, the need for sub-industry monitoring services business accumulation, in a certain industry or segmentation of the system to monitor the good, some systems will not; similarly, in the field of government management services, there are several segments, the performance of the different systems is also uneven. Evaluation criterion two: the timeliness of web content monitoring.
The level of timeliness is closely related to hardware and software technology and operational equipment resources, which involves specialized technology is not the focus of this article. The point to be made here is that timeliness is closely related to the accuracy mentioned earlier.
If the system's judgment of the content of the high accuracy, the need for human intervention will be less (of course, the ideal state is completely without human intervention), monitoring information processing time lag will be less, monitoring the timeliness of the natural will be guaranteed. If the system requires a certain amount of human intervention, usually, the average lag will be about 0.5~3 days.
This time has far exceeded the "golden 4-hour" cycle for monitoring and responding to online public opinion mentioned earlier. If the system's timeliness is low, it will not be able to conduct timely monitoring and emergency response to network emergencies, which is very crucial for crisis PR services.
Some monitoring systems rely on baidu, google and other search engines to re-analyze search results (the so-called metadata crawl), and these large search engines have their own specific rules and cycles for updating data crawl. For the ranking of the site, the search engine crawler software will be a few days, or even longer, will be patronized once.
In this case, the timeliness is not guaranteed. Of course, different customers have different requirements for timeliness.
Some customers will require "real-time monitoring", such as PR companies providing crisis PR services, advertising agencies and some organizations focusing on people's livelihoods and social trends, etc.; some customers do not have such a high demand for timeliness, for example, the demand for services to assess the value of the brand, or the demand for services to assess the aftermath of a particular event. There are also clients who are not so demanding in terms of timeliness, such as brand value evaluation, after action evaluation of specific events, etc. Usually, the timeliness is an important basis for the pricing of network public opinion detection systems, and from the perspective of saving money, customers should choose cost-effective systems and services that meet their own business timeliness needs, and do not necessarily require "real-time monitoring".
The third evaluation criterion is the comprehensiveness of web content monitoring. The concept of comprehensiveness of web content monitoring is easy to understand, that is, the type and total number of websites monitored by the system.
Usually, the monitoring system will not do the whole network monitoring, not to mention the technical difficulties, only in the operating costs and investment is difficult for small and medium-sized companies. The superior performance of the monitoring system will be selective network monitoring, customers concerned about the field of related sites, ranking of the top of the big sites, hot sites is the main object of monitoring.
The vast majority of systems that claim to be able to do "whole network monitoring" rely on reanalyzing search engine results - metadata crawling. As noted earlier, this approach achieves great coverage, but at the expense of timeliness.
But there are some technical issues to be dealt with in terms of comprehensiveness, and some of the major content service sites, social networking media, and e-commerce sites have imposed restrictions on crawler software. The reasons for the restrictions are different, content service sites, social networking media (SNS sites, microblogging, etc.) is mainly for the protection of information and user data and the specific requirements of the competent authorities, e-commerce sites (autonomous platforms) is mainly to prevent the price comparison of online commodities.
Comprehensively, the problem of "comprehensiveness" is easier to solve than that of "accuracy" and "timeliness", with technical factors on the one hand and investment in operational resources such as servers and bandwidth on the other. Technical factors are one aspect, and significant improvement can be achieved by investing more operational resources such as servers and bandwidth. The whole network collected a lot of public opinion system, I also use a lot of systems, and currently do a better job in Shenzhen have more Ruike public opinion data analysis station, followed by a few Beijing, cost-effective to count the one in Shenzhen, the technical aspects are in place, the main thing is that the price is reasonable.