KR20210063061A - after-services counting prediction system of an apartment houses and method thereof - Google Patents

Abstract

The present invention relates to a system for estimating the number of received defect repairs of apartment houses, which enables a construction company to recognize the number of defect repairs expected in new apartments at design and construction stages in advance to prepare the defect repairs, and a method thereof. To this end, the method comprises the following steps: generating a new site database (110) for inputting information about a new construction site of apartment houses (S100); comparing an existing site database (130) to which the information of a completed construction site is input with the new site database (110) to calculate similarity and generate a similarity database (150)(S110); matching the number of defect repairs received to the existing site having a similarity greater than or equal to a threshold to generate a defect database (170) for each work type (S120); calculating the number of defect repairs received per household for each work type from the defect database (170) for each work type to generate a standard defect database (190)(S130); and estimating the number of defect repairs expected to occur at the new construction site on the basis of the standard defect database (190) and the new site database (110) to generate an estimated defect database (210)(S140).

Description

The system and method for predicting the amount of defect repair received in an apartment house {after-services counting prediction system of an apartment houses and method thereof}

The present invention relates to defect repair of an apartment house, and more particularly, to a system and method for predicting the amount of defect repair received in an apartment house.

In general, apartment houses (apartments, condominiums, dormitories, multi-family houses, etc.) are typical B2C projects in the construction industry. In particular, when the new apartment is completed, the residents of the household will move in and live there. At this time, for various defects found in the apartment, the construction company is repairing the defects for a certain period of time. Examples of defects include failure or malfunction of built-in furniture or electronic products, defects in gas-related facilities, defects or complaints regarding tile work, plumbing work, etc., defects or complaints regarding cracks and water leakage in buildings, failures or complaints regarding wallpaper, interior materials, lighting, etc. etc. are very diverse.

Accordingly, the construction company will receive various repairs for various defects related to the new apartment for about 3 years from the date of move-in. And they often prepare the necessary manpower, equipment, and materials to take the necessary measures.

However, in the prior art, the amount of repairs received for such a new apartment was roughly predicted according to the experience of the experienced person, and there was no objective standard for this. In particular, the amount of repairs received is closely related to the number of households in new apartments, and the number of receipts for repairs for defects differed greatly by year 1, year 2, and year 3, so an expert system was needed.

However, new construction companies or small and medium-sized construction companies cannot afford to build such an expert system on their own, and when there is not much construction performance, information on existing sites to be accumulated is often poor.

1. Korean Patent Publication No. 10-2003-0060521 (Customer Data Analysis System), 2. Korean Patent Publication No. 10-2016-0075971 (Big Data Management System for Public Civil Service Data Service), 3. Republic of Korea Patent Registration No. 10-1548990 (point of interest category classification device and method), 4. Republic of Korea Patent Registration No. 10-1752255 (optimal feature screening method and device for multi-label pattern classification, multi-category document classification device), 5. Korean Patent Publication No. 10-2018-0111979 (Semantic Category Classification Method).

Accordingly, the present invention has been devised to solve the above problems, and the problem to be solved by the present invention is repair of defects in an apartment house that can predict the amount of repairs expected to occur after moving in a new apartment in advance. An object of the present invention is to provide a system and method for predicting the amount of receipt.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those of ordinary skill in the technical field to which the present invention belongs from the following description. It will be understandable.

means for generating a new site DB 110 based on the input information on the new construction site of the apartment house in order to achieve the above technical task; a similarity generating means for generating a similarity DB 150 by calculating a similarity level by comparing the existing site DB 130 to which information of the completed construction site is input and the new site DB 110; means for generating a work type defect DB 170 by matching the received amount of defect repair to an existing site having a similarity greater than or equal to a threshold; means for generating a defect standard DB (190) by calculating the amount of repairs received per household by construction type from the defect DB (170) by construction type; and means for generating a defect prediction DB (210) by predicting the amount of defect repairs expected to occur at the new construction site based on the defect standard DB (190) and the new site DB (110). There is provided a system for predicting the amount of repairs received in apartment houses, characterized in that

In addition, in order to achieve the above object, as another category, generating a new site DB 110 for inputting information about a new construction site of an apartment house (S100); Comparing the existing site DB 130 to which information of the completed construction site is input and the new site DB 110, calculating the similarity to generate the similarity DB 150 (S110); generating a work type defect DB 170 by matching the amount of defect repairs received for existing sites having a similarity greater than or equal to a threshold (S120); generating a defect reference DB 190 by calculating the amount of repairs received per household by construction type from the defect DB 170 by construction type (S130); and generating a defect prediction DB 210 by predicting the amount of repairs expected to occur at the new construction site based on the defect reference DB 190 and the new site DB 110 (S140); There is provided a method for predicting the amount of repairs received in an apartment house, characterized in that it comprises a.

In addition, the new field DB 110 includes the number of households 1112 or area 114 information.

Also, the similarity generating means may use at least one of cosine similarity, jacquard similarity, distance-based similarity, and random forest.

Also, the similarity is between 0 and 1, and the threshold is 0.8 or more.

In addition, the work type of the work type DB 170 includes at least one of a furniture construction 172 , a gas construction 174 , and a tile construction 176 .

In addition, the defect DB 170 by construction type includes the amount of received defect repairs in units of one year from the moving-in date of the apartment house or by the end of the year.

In addition, the defect standard DB (190) contains the number of applications received prior to moving in, such as prior inspection of tenants in apartment houses, the number of applications received in the first year (192) from the date of move-in, the amount received in the second year (194) and the number of applications received in the third year (196), and more include quantity.

In addition, the defect prediction DB 210 calculates the amount 218 of the predicted defect repair by multiplying the defect reference DB 190 by the number of households 112 of the new site DB 110 .

According to an embodiment of the present invention, there is an effect that the amount of repairs expected in a new apartment can be recognized and prepared in advance in the design and construction stages.

In addition, there is an effect that can fundamentally reduce the amount of defects received by preparing management guidelines for construction sites with similar characteristics and responding preemptively.

In addition, it is possible to efficiently design, construct, and manage apartments by presenting the annual change in the number of defects and the characteristics of each construction type as objective data, and it is possible to increase the satisfaction of the occupants (consumers).

However, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description. I will be able to.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention to be described later, so the present invention is described in such drawings It should not be construed as being limited only to
1 is a schematic configuration diagram of a system for predicting the amount of defect repair received in an apartment house according to an embodiment of the present invention;
Figure 2 is an example of a new field DB in Figure 1,
Figure 3 is an example of the existing field DB in Figure 1,
4 is an example of the similarity DB in FIG. 1;
Figure 5 is an example of the work type let DB in Figure 1,
6 is an example of the defect reference DB in FIG. 1,
7 is an example of a defect prediction DB in FIG. 1;
8 is a flowchart of a method for predicting the amount of received defects in an apartment house according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiments can be variously changed and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all or only such effects, the scope of the present invention should not be understood as being limited thereto.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from other components, and the scope of rights is not limited by these terms. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component. When a component is referred to as being "connected" to another component, it should be understood that although it may be directly connected to the other component, another component may exist in the middle. On the other hand, when a component is referred to as being "directly connected" to another component, it should be understood that there is no other component in the middle. On the other hand, other expressions describing the relationship between components, that is, "between" and "just between" or "neighboring to" and "directly neighboring to" should be interpreted as well.

Singular expressions are to be understood as including plural expressions unless the context clearly indicates otherwise, and terms such as "comprises" or "have" refer to the specified features, numbers, steps, actions, components, parts, or these. It is to be understood that it is intended to designate that a combination exists and does not preclude the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which the present invention belongs, unless otherwise defined. Terms defined in commonly used dictionaries should be interpreted as having meanings in the context of related technologies, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

embodiment Configuration

Hereinafter, the configuration of the preferred embodiment will be described in detail with reference to the accompanying drawings. 1 is a schematic configuration diagram of a system for predicting the amount of defect repair received in an apartment house according to an embodiment of the present invention. As shown in FIG. 1 , the system can be largely divided into a control unit 100 , a database DB, and peripheral devices. Such a system may be implemented in a personal computer, a server computer, a cloud, a notebook computer, a portable terminal, or the like.

The control unit 100 is a member in which software loading, operation, control, command instruction, and the like is performed, and is representative of a CPU of a computer, a microcomputer, and the like.

The input unit 230 is a component for inputting necessary information, and may be a keyboard, a mouse, a touch screen, a USB port, or the like.

The output unit 250 is configured to output the operation result of the control unit 100 , and may be a monitor, a speaker, a printer, or the like.

The communication unit 270 is configured to receive data or a control command from the outside, and transmit the output of the control unit 100 to the outside. The communication unit 270 may be operated by wire or wirelessly, and may be a LAN, an Internet modem, a 4G or 5G public communication network, WiFi, Bluetooth, or the like.

The storage unit 290 is configured to store a program operated by the control unit 100 , store an operation result, and store a database. The storage unit 290 may be RAM, ROM, hard disk, flash memory, CD, SDD, or the like.

The database stores necessary information according to fields, and can be searched and sorted. The database of the present invention is divided into a new site DB 110 , an existing site DB 130 , a similarity DB 150 , a defect DB 170 by construction type, a defect standard DB 190 , and a defect prediction DB 210 .

2 is an example of the new field DB 110 in FIG. As shown in FIG. 2 , the new site DB 110 has fields such as the number of households 112 , an area 114 , the size of site defects 116 , and a base interest rate. The record of site A 118 is the site of a new apartment under construction or under construction. The number of households 112 is the number of new apartments, and in FIG. 2 , it can be seen that 450 households can be accommodated in a new apartment. The area 114 is a location where the new apartment is located, and may be Seoul, Buseon, Suwon, Daejeon, or the like. The site defect scale 116 can be divided into large-scale residential land (normal), lawsuit sites (bad), series sites (secondary construction after completion of the first complex) (normal), and other sites (good). The base rate represents the bank's lending rate. Various other real estate-related indicators (eg, floor area ratio, reconstruction, remodeling, number of square feet, etc.) may be added to the fields of the new site DB 110 .

3 is an example of the existing field DB 130 in FIG. As shown in FIG. 3 , the existing field DB 130 maintains the same field structure as the new field DB 110 . The records of the existing site DB 130, site B, site C, ..., and site Z, consist of sites constructed and completed in the past.

4 is an example of the similarity DB 150 in FIG. As shown in FIG. 4 , the fields of the similarity DB 150 include fields such as the similarity 156 , the number of households 112 , the region 114 , the size of the site defect 116 , and the base interest rate. The similarity is calculated through conventionally known methods such as cosine similarity, jacquard similarity or distance-based similarity, random forest, and the like.

The cosine similarity is a method of calculating the similarity through the dot product operation. That is, the cosine similarity refers to the degree of similarity between vectors measured using the cosine value of the angle between two vectors in the dot product space. The cosine of an angle of 0° is 1, and the cosine of all other angles is less than 1. Therefore, this value is used for the purpose of judging the similarity of the direction rather than the magnitude of the vectors. If the directions of the two vectors are exactly the same, they are 1, if they form an angle of 90°, they are 0, and if they are in the opposite direction, it is -1. have a value In this case, the size of the vector has no effect on the value. Cosine similarity is especially used in positive spaces where the result falls into the range [0,1].

Since cosine similarity can be applied to any number of dimensions, it is often used to measure similarity in a multidimensional positive space. For example, in the field of information retrieval and text mining, each word constitutes each dimension, and a document has a vector value expressed as the number of times each word appears in the document. In such a multidimensional space, the cosine similarity is a very useful method to measure the similarity of two documents. Cosine similarity is also used as a method of measuring the cohesion between clusters in the data mining field. The concept of cosine distance is sometimes used instead, which is expressed by the following [Equation 1].

However, the cosine distance cannot be used as an exact distance function because it does not have the property of trigonometric inequality and does not satisfy the cosine axiom. In order to satisfy the trigonometric inequality while maintaining the order, the angular distance must be used. One of the reasons why cosine similarity is widely used is that it is possible to measure distances in any number of dimensional spaces as long as it is a positive space. The cosine value of the two vectors (a, b) can be derived from the following equation, which is the Euclidean scalar product formula, to obtain similarity as in [Equation 2].

a·b = │a|||||b|cosθ

Jacquard similarity is a method of calculating similarity through intersection/union operations.

Distance-based similarity is calculated using Euclidean, Manhattan, and Mahalanobis distances.

The random forest method is a kind of ensemble learning method used for classification and regression analysis, and similarity is calculated by outputting a class (classification) or average predicted value (regression analysis) from a plurality of decision trees constructed in the training process.

The degree of similarity is expressed as a number having a decimal point between 0 and 1, and in the present invention, the threshold value for determining that the site is similar is 0.8. For example, in FIG. 4, the degree of similarity 156 of site B is "0.45", which is classified as dissimilar site 152, and similarity 156 of site C is "0.95", which is classified as similar site 154, The similarity 156 of site D is "0.83", which is classified as a similar site 154, the similarity 156 of site E is "0.42", which is classified as a dissimilar site 152, and the similarity of site Z (156). is classified as a similar site 154 as "0.90".

5 is an example of the DB 170 according to the type of work in FIG. As shown in Figure 5, let's work type DB 170 is the number of households that occurred in the existing site 112, furniture construction 172 1st year, furniture construction 172 2nd year, furniture construction 172 3rd year, gas Construction (174) 1st year, Gas construction (174) 2nd year, Gas construction (174) 3rd year, Tile construction (176) 1st year, Tile construction (176) 2nd year, Tile construction (176) 3rd year . The record of the defect DB 170 by construction type is configured for each existing site, and the amount of defect repair that has actually occurred is stored as data. For example, it can be seen that 1,890 cases of defect repair were received during the first year of furniture construction at site C.

6 is an example of the defect reference DB 190 of FIG. As shown in FIG. 6 , the defect standard DB 190 has fields of the first year 192 , the second year 194 , and the third year 196 , and is composed of records for each type of work. If necessary, the defect standard DB 190 may be defined by expanding it to a fourth year, a fifth year, or more. The construction type exemplifies the furniture construction 172, the gas construction 174, and the tile construction 176, but may include various other constructions (wallpaper, home appliances, piping, walls, window frames, windows, doors, etc.). The defect standard DB 190 indicates that, for example, in the case of the Gas Corporation 172, about 2.144 defects are received per household during the first year 192. It can also be seen that the number of such defects received is decreasing as time goes by in the second year (192) and the third year (196).

FIG. 7 is an example of the defect prediction DB 210 of FIG. 1 . As shown in FIG. 7 , the defect prediction DB 210 has fields of the first year 212 , the second year 214 , and the third year 216 , and consists of records for each type of work. If necessary, the defect prediction standard DB 210 may be defined by expanding it to a fourth year, a fifth year, or more in the same way as the defect standard DB 190 . The type of work exemplified the furniture construction 172, the gas construction 174, and the tile construction 176 in the same way as the defect standard DB 190, but may include various other construction works. The defect prediction DB 210 indicates that, for example, in the case of the Gas Corporation 172, the reception amount of 964.8 defect repairs is predicted during the first year 212. This is calculated by multiplying the defect standard DB 190 by the number of households. For example, in the case of the Korea Gas Corporation (172), since 2.144 cases per household are set in the defect standard DB (190), multiplying the number of new apartment households (450 households) is a total of 2.144 × 450 = 964.8 cases of defect repair receipts (predicted number of defects) (218)) is predicted.

embodiment action

Hereinafter, the operation of the preferred embodiment will be described in detail with reference to the accompanying drawings. 8 is a flowchart of a method for predicting the amount of received defect repair of an apartment house according to an embodiment of the present invention. As shown in FIG. 8 , first, the control unit 100 creates a new site DB 110 by using input information (eg, number of households, region, market environment, etc.) about the new construction site of the apartment house (S100). ).

Next, the control unit 100 prepares the new site DB 110 by reading the completed existing site DB 130 from the storage unit 29 in which information of the completed construction site is input. A similarity DB 150 is generated by calculating the similarity through contrast (S110). At this time, the similarity uses at least one of cosine similarity, jacquard similarity, distance-based similarity, and random forest, the calculated similarity is between 0 and 1, and the threshold is 0.8 or more. As shown in FIG. 4 , it can be seen that sites C, D, and Z having a degree of similarity 156 of 0.8 or more are selected as similar sites 154 .

Next, the control unit 100 creates a defect DB 170 by work type by matching the actual amount of defect repairs to existing sites (eg, site C, site D, site Z) having the calculated similarity greater than or equal to the threshold value (S120). ). At this time, it includes furniture construction 172, gas construction 174, and tile construction 176 (see FIG. 5).

Next, the control unit 100 generates a defect reference DB 190 by calculating the amount of repairs received per household by construction type from the defect DB 170 by construction type (S130). That is, if the first year of furniture construction (1,890 cases) is divided by the number of households (112) (420 households) at site C, the same is performed for site D and site Z, and the average is calculated, as shown in FIG. 6, "2.144" is calculated. do.

Next, the control unit 100 generates a defect prediction DB 210 by predicting the amount of defect repairs expected to occur at a new construction site based on the defect standard DB 190 and the new site DB 110 . (S140). That is, the defect prediction DB 210 multiplies the defect reference DB 190 by the number of households 112 of the new field DB 110 to calculate the amount 218 of the predicted defect repair.

In this way, the finally completed defect prediction DB 210 can predict the amount of defect repairs expected to occur in the first year (212), the second year (214), and the third year (216) at the new apartment construction site. let it be

Detailed description of the preferred embodiments of the present invention disclosed as described above has been provided to enable those skilled in the art to implement and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art can use each configuration described in the above-described embodiments in a way in combination with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that are not explicitly cited in the claims may be combined to form an embodiment or may be included as a new claim by amendment after filing.

100: control unit;
110: new site DB,
112: the number of households,
114: region,
116: on-site defect scale,
118: field,
130: Existing field DB,
150: similarity DB,
152: similar field,
154: non-similar scene,
156: similarity,
170: Let's classify the work DB,
172: furniture construction,
174: Gas Corporation,
176: tile work,
190: defect standard DB,
192: 1st year,
194: 2nd year,
196: 3rd year,
198: standard lethal number,
210: defect prediction DB,
212: 1st year,
214: 2nd year,
216: 3rd year,
218: let's predict number,
230: input unit,
250: output unit,
270: communication department;
290: storage.

Claims (16)

means for generating a new site DB 110 based on the input information on the new construction site of the apartment house;
a similarity generating means for generating a similarity DB 150 by calculating a similarity level by comparing the existing site DB 130 to which information of the completed construction site is input and the new site DB 110;
means for generating a work type defect DB 170 by matching the amount of defect repair received with respect to an existing site having the similarity greater than or equal to a threshold;
means for generating a defect reference DB (190) by calculating the amount of repairs received per household by construction type from the defect DB (170) by construction type; and
Means for generating a defect prediction DB (210) by predicting the amount of defect repairs expected to occur at the new construction site based on the defect standard DB (190) and the new site DB (110) A system for predicting the amount of repairs received in apartment houses, characterized in that. The method of claim 1,
The new on-site DB 110 is a system for predicting the amount of repairs received in an apartment house, characterized in that it includes the number of households 1112 or area 114 information. The method of claim 1,
The similarity generating means uses at least one of cosine similarity, jacquard similarity, distance-based similarity, and random forest. The method of claim 1,
the similarity is between 0 and 1, and
The threshold value is 0.8 or more, the system for predicting the amount of repairs received in the apartment house. The method of claim 1,
The construction type of the construction type defect DB 170 is a system for predicting the amount of received repairs for defects in an apartment house, characterized in that it includes at least one of a furniture construction 172, a gas construction 174, and a tile construction 176. The method of claim 1,
The construction type defect DB 170 is a system for predicting the amount of defect repairs received by the apartment house, characterized in that it includes the amount of the defect repairs received in units of one year from the moving-in date of the apartment house. The method of claim 1,
The defect standard DB 190 includes the first year 192 received, the second year 194, and the third year 196 received from the move-in date of the apartment house. Quantity forecasting system. The method of claim 1,
The defect prediction DB 210 multiplies the defect standard DB 190 by the number of households 112 of the new field DB 110 to calculate the amount of predicted defect repair receipt 218 . Remuneration receipt forecasting system. Creating a new site DB 110 for inputting information about a new construction site of the apartment house (S100);
Comparing the existing site DB 130 to which information of the completed construction site is input and the new site DB 110, calculating the similarity to generate the similarity DB 150 (S110);
generating a work type defect DB 170 by matching the amount of defect repairs received with respect to an existing site having the similarity greater than or equal to the threshold (S120);
generating a defect reference DB 190 by calculating the amount of repairs received per household by construction type from the defect DB 170 by construction type (S130); and
generating a defect prediction DB 210 by predicting the amount of defect repairs expected to occur at the new construction site based on the defect reference DB 190 and the new site DB 110 (S140); A method for predicting the amount of repairs received in an apartment house, characterized in that it comprises a. The method of claim 9,
The new on-site DB 110 is a method of predicting the amount of repairs received in an apartment house, characterized in that it includes information on the number of households 1112 or area 114. The method of claim 9,
The similarity generating means uses at least one of cosine similarity, jacquard similarity, distance-based similarity, and random forest. The method of claim 9,
the similarity is between 0 and 1, and
The threshold value is 0.8 or more, the method of predicting the amount of repairs received in an apartment house. The method of claim 9,
The work type of the work type defect DB 170 is a method of predicting the amount of received repairs for defects in an apartment house, characterized in that it includes at least one of a furniture construction 172, a gas construction 174, and a tile construction 176. The method of claim 9,
The construction type defect DB 170 is a method for predicting the amount of received defect repairs in an apartment house, characterized in that it includes the amount of repairs received in units of one year from the moving-in date of the apartment house. The method of claim 9,
The defect standard DB 190 includes the first year 192 received, the second year 194, and the third year 196 received from the move-in date of the apartment house. Quantity forecasting method. The method of claim 9,
The defect prediction DB 210 multiplies the defect standard DB 190 by the number of households 112 of the new field DB 110 to calculate the amount of predicted defect repair receipt 218 . How to predict the amount of compensation received.

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