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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:$ Q& F+ K2 k0 W. j! ]
to do-business % `5 `9 q2 T( `( z: a
rt random 360% C9 s1 j$ T' Y
fd 10 Y" i( W; z. T/ Z& k+ {
ifelse(other turtles-here != nobody)[
$ ?3 `5 s6 T2 M   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题./ _( M$ u4 w9 l8 ^  O$ Z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; x/ n5 v' L- h2 P7 |5 [: _+ N4 M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! u+ I0 d& V9 Q- t) P   set [trade-record-one-len] of self length [trade-record-one] of self, W% T! N( a# E  E8 g/ g3 m, u
   set trade-record-current( list (timer) (random money-upper-limit))
$ M4 i. M* l6 R# F- F* _0 S; X: B! u
$ P% M( z8 R5 u8 R3 V问题的提示如下:
- O' Z2 \- V2 r' P" M  e
+ a4 v4 K9 T5 i1 Q4 K. n9 }) W5 I) Gerror while turtle 50 running OF in procedure DO-BUSINESS, j. B  D) \& o! r1 B
  called by procedure GO
( ~& [# U7 T+ \- MOF expected input to be a turtle agentset or turtle but got NOBODY instead.) H: H2 I# m( C5 r
(halted running of go)
& Y2 ^! K2 O! w" y- e. \+ @
. @0 Q$ R( ^, Z7 M5 D% Y$ z这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
0 E6 U7 n( e* p5 X! Z( N另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
) |9 [& {$ I4 g# I5 ?globals[2 n% _5 B0 @! k# `+ {
xmax
* I" N$ W2 f$ s! T0 |ymax# J  X  F$ G4 G. N' x; }
global-reputation-list
. N( S* E6 f' Z( @: R0 Q0 a: a) o1 G- T, N" ?. B9 W$ D, U
;;
每一个turtle的全局声誉都存在此LIST
+ Z; ]- `' }! N! G3 zcredibility-list! q3 K0 D0 j# @
;;
每一个turtle的评价可信度: s. t& |) T# W, k
honest-service
, L% H' @5 L. sunhonest-service0 [5 j# k9 s5 p7 J* x7 R: h0 J
oscillation9 h: ~2 [3 Z: x6 I- r( {
rand-dynamic
& H0 w3 u8 w& B4 @' o7 j7 Z% T]
' K" o& W/ r8 t" z8 w
* `; H# H, ~3 E& J3 R5 j4 aturtles-own[
' E- c- A: ]4 @1 l, M, ?( ytrade-record-all3 l" q( A4 I! a: {& W5 I
;;a list of lists,
trade-record-one组成
8 u* ~8 Q5 s% v8 v2 f7 d' w: B5 rtrade-record-one
( X" l0 o8 K6 v0 k;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  ]7 d5 U, l' V* }4 o/ I
6 u9 l* a& _  `# |;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]; m" w% s( N7 T# @0 n, R2 h. x
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]$ d# {% J2 N* n4 E6 T9 v3 r
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
+ I0 }% t- l. L5 wneighbor-total+ T) X5 H& R# t  Z* R& p& Q! ?
;;
记录该turtle的邻居节点的数目
0 h9 d; I. h# o7 wtrade-time% |7 Q+ m# y+ p# q  _
;;
当前发生交易的turtle的交易时间
$ |6 V  F7 i% t/ r4 Rappraise-give
) F. u. L7 P0 ^& `% c;;
当前发生交易时给出的评价( B) j- q5 \. f& _
appraise-receive+ s9 J, G& ^; B) c( {9 r
;;
当前发生交易时收到的评价9 L# D7 h2 C" L, Z
appraise-time& Y. K# }3 t5 ]  S
;;
当前发生交易时的评价时间4 E! w7 @, i( _, g) r% H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ P  r. S4 X/ l# N7 T
trade-times-total# ^+ L; P. M0 G) |/ y1 r# ^) m  P
;;
与当前turtle的交易总次数
+ c& n2 }6 E/ v# ^+ x3 xtrade-money-total1 V# T1 i8 x, G9 g5 A$ Y" `, m
;;
与当前turtle的交易总金额
* @2 `) ^, L, ]1 r5 B& v# clocal-reputation, W  ~* C7 I; W; V6 G0 t
global-reputation
" G: T  S3 p) f% L  {credibility' j1 w2 P/ x* g9 Y* V; c9 u
;;
评价可信度,每次交易后都需要更新9 n% f" B' N& |7 j
credibility-all' p4 h$ h: Y5 h3 u! n6 O4 l
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据' E) E& Y& ~* T) d: j; d% m' u- Q! l
8 r& [, R5 m  J
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
' G# G; w5 P- H0 dcredibility-one
7 X# W: G' I$ Y' s! `' V;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
4 u" {( K1 i# ?8 |. d" b  ?7 Q4 sglobal-proportion3 r- Z( ?: C5 Z6 r" {; W+ K4 ~
customer9 p' ~/ E! P6 I# r* h
customer-no
! v( v( e* s& a) ^8 ^! S6 a  jtrust-ok
! e; p8 I' ]) g9 Mtrade-record-one-len;;trade-record-one的长度; }$ q6 `' N  K2 V
]
9 [# u" |# q2 m# z- W0 N% O& \- B, e, e6 N" J5 w
;;setup procedure2 t8 a  ?* k$ s+ M: Z, S# ]
) h% v6 P4 F- O
to setup
0 ]; |: S% a% b$ q
1 c. `1 D5 Z! R9 r: @ca
8 v- I: M3 p  \+ o2 {/ G8 C
6 ~9 n3 v) L; Y
initialize-settings
1 b1 w1 G, T: S  B2 Q6 z

$ V' x8 D. H, f7 ]1 c: Vcrt people [setup-turtles]

. m8 Y2 F0 B/ V' K: M2 o
; ~) ?2 {7 g8 breset-timer
3 R: ^* @9 f, _+ G$ j" m1 e5 N; L9 C% {
7 K- t  w7 E# @$ l; [
poll-class
, v& `0 Z' l/ L7 u0 I

9 I! Z. `  o8 m" w: ]setup-plots
0 z, ]' P) x2 U$ B

1 p7 Y2 h5 K  x, Gdo-plots
; v1 c' J. `$ O; J2 y+ V
end
8 Z# F8 u) P0 s* U
2 t1 ]9 |6 [- u* bto initialize-settings
) z0 E2 ?( I1 a4 C" F% J6 Y3 J# J/ w1 u" J# b, x
set global-reputation-list []

  \# V) g' d* \) a0 e
( j3 h" {# s9 g% D0 Vset credibility-list n-values people [0.5]

9 v9 U' p  q3 H, u
$ I) w  v, G) I. _* D9 z3 Jset honest-service 0

' m# H; |7 o4 q2 `' O2 V% Z" Y
5 i6 m: O, {! d5 E, @set unhonest-service 0

, q6 z8 m8 p8 u2 N" S* H
; T8 ?5 Q. V' V1 }- H. ]# n- W  }6 Tset oscillation 0
9 o" F& a5 R4 u8 A
* \! o+ [/ A# p7 s" x
set rand-dynamic 0
1 Q" g. m' q) J" r8 R  F
end
6 \8 @( k2 R" y8 V0 ^- u, x, C7 q8 c. v, A! U- U8 S
to setup-turtles
1 C% h8 f& D& D1 e/ D% |3 _9 Iset shape "person"- B+ @6 `. G3 A; n
setxy random-xcor random-ycor+ p4 L, U' I* s+ z- s# ^8 e
set trade-record-one []
( X+ R2 \3 a  @8 M6 T8 x: |

9 q% A& v( r3 [set trade-record-all n-values people [(list (? + 1) 0 0)]
+ G% G! c5 h' ]! r1 _1 u2 C/ a; {
: U9 l# c0 W( r; b  f/ q! Y8 R
set trade-record-current []! H# G7 t% K9 o( z
set credibility-receive []
% _2 M  B+ p) jset local-reputation 0.5: X# ?; B' x. j, y, k0 c
set neighbor-total 0. ]3 I* O8 ~) ?
set trade-times-total 0
; L+ r; o! _/ t8 Iset trade-money-total 0
- B8 X; C$ S+ yset customer nobody
- {( h& q' C3 q6 ~9 E6 J& kset credibility-all n-values people [creat-credibility]; V8 r$ {8 K! z# L
set credibility n-values people [-1]
) H6 k3 x2 P  l0 s- w" d$ yget-color+ {% y4 [7 q, T+ M8 i$ l
* v' |- _: [$ a, d
end+ ~2 O' b% o( P% I

4 r" e0 F8 T* l; z7 u: M* ato-report creat-credibility
" x- q/ ?  M. ^" q2 ^/ creport n-values people [0.5]- W4 p) [+ N+ s. p' A3 K
end* j; Q( \. O. ?; c, n3 U
7 D3 c5 C9 A2 p6 P
to setup-plots) D8 Q$ I! @5 x' s7 g( T4 ^7 a
% k0 i7 D# \; t: X$ a
set xmax 30

) M4 P8 d4 ^: _. c8 c$ O3 ~8 G6 J; a$ x, A# f  Z
set ymax 1.0

# r3 h+ N& j3 n# u
# ~2 S5 B' _. d# d- Hclear-all-plots

  c# D, C) ]4 `  m% ]( X6 `" d5 T2 y4 q7 L" n
setup-plot1
) P6 i9 Z3 q* A' T6 l

) h6 n/ B9 g, m: b: ysetup-plot2

1 x" p' U4 D5 X3 I
! P6 k4 q5 J1 s8 usetup-plot3

: |9 T( A: T1 C: O; J; Kend
, t/ E- H5 d, m" E7 ]1 R( ]8 G) [2 X+ Y+ S5 Z& M
;;run time procedures
5 f3 Z5 x9 o% I* h0 `' V4 C9 ^2 }" V' H1 F* _
to go1 C- d1 v; E8 A/ K* W) N% O

) O$ v% X. E; u8 j2 t1 M% L/ Q* Wask turtles [do-business]

" E2 U7 D: s5 Pend
8 c( Z6 F2 [) D# s3 g' T; D; B
/ [% K2 E$ |+ l7 r/ w! Oto do-business
' h7 C5 j6 q% r+ R0 H9 H
( Z' z+ K+ A7 {2 U
+ y0 S5 u2 J' i8 Z) x1 p
rt random 360

  x" Y) y4 a( M$ ]5 z; D, T& {/ ^* O/ M  x/ l: b
fd 1
+ h# v  E1 S1 X4 s' E
3 x0 A% R( E% U" g% h6 I
ifelse(other turtles-here != nobody)[

* C; W1 R- K! Q$ X4 G7 z, D2 Y* y" D/ {* ?3 ~8 e; v) K
set customer one-of other turtles-here
6 G  `& m+ O. h# W% X

1 r/ f  {* R) |- o4 }+ G" q- Z* \;; set [customer] of customer myself
' l( U7 ]% e, y7 J

, U0 Y* O2 d+ J+ Bset [trade-record-one] of self item (([who] of customer) - 1)
4 T0 X. K. k; e# u[trade-record-all]of self" }; d) Y4 t# Z3 m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 _$ u( z( t4 l) Z. G
" T$ y% f5 v1 f9 R- u  {0 q$ R8 x
set [trade-record-one] of customer item (([who] of self) - 1)
* t) D& {$ x1 W# W% K[trade-record-all]of customer

$ B  B+ [3 N& i; Z" G% ?- ]6 ]7 P0 y) f: O  B2 V1 m3 p9 s, I
set [trade-record-one-len] of self length [trade-record-one] of self

8 |. ~% ?! S6 o6 m' \$ a
* u( N9 {& l% t- _9 z0 E% kset trade-record-current( list (timer) (random money-upper-limit))

4 v/ ?" Z, L' F0 ^* A2 Y* O) x/ D& I+ R
ask self [do-trust]
- `) |) X5 [1 Q) Q& ~;;
先求ij的信任度8 Y' ?* K7 ^5 v3 S1 _

2 q7 A9 ~; H6 S6 zif ([trust-ok] of self)
. K, S/ }! ^" `) s8 ?0 Y;;
根据ij的信任度来决定是否与j进行交易[
& q- q- A7 n8 G# zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, }: ~, q# s3 |  Z0 G; l
/ ?) Y8 y8 {/ E9 e
[
2 P! B! S* l& m- M1 P5 j

4 L9 a: j; G/ e3 u# k# {do-trade
& I8 j) m/ Z$ Y

' w- Q+ n: J9 H' gupdate-credibility-ijl
. }* W' Q) f$ M( S, j

8 F; g, [  O5 n  Mupdate-credibility-list
- v$ N) X; ?/ J# E2 O6 J) B
) ~  ~) [6 w( ]  V
+ w7 l+ k- @" J1 s- M4 z$ ^
update-global-reputation-list

' A1 R' c7 r$ t, M7 }* Z1 G7 K) w) b) f* t" a3 W' s8 n0 V- B% y
poll-class
, @( I' l4 H# A- l/ t
  w0 R) W) n# w$ a! a: w/ U. |
get-color
7 M4 I2 w4 O' q0 E9 q. g2 M
& @& U$ I& r  \6 w; ^8 z. f9 o0 F( F
]]8 K' y7 g0 w) Q
1 ~' i! L$ J. ?4 o. Y
;;
如果所得的信任度满足条件,则进行交易4 g2 [3 {( N5 g% n
2 h; l+ F  Q4 p$ {
[

! n/ g9 X" P2 ?
+ G4 j* n. c2 ]: Art random 360

0 Z7 t+ ?  \; m. k! ~5 \
" X# Y5 _# n0 _6 l' Vfd 1

( C2 n4 f. O7 k- y# j& m) V, X
2 R; U" ?4 t4 u0 |# j  ]]

1 w7 J, Y- x, k- }7 z( K) O! Q1 b( G  Z
end
$ s' w0 o& c- r' h7 E  t2 k

$ S7 _- c$ Y0 h! d& J" wto do-trust : x6 m* o$ D+ k4 @9 J
set trust-ok False- O+ E4 n& }- V) G, J% N4 }

. j: D2 z' e1 X, R7 m% Q
% [6 {* S8 H, |* \& }0 o
let max-trade-times 00 J# \  p! g, k, y& s' `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 x( c. F8 L1 M- _/ |5 q7 |
let max-trade-money 0& a! w- ~* K4 i# I2 u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 y0 L% _# V: @let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. Z8 v8 B, }1 X! C, Y: t2 @. s
! A/ E; ?4 S# Q* T, [
6 H+ Q& X' d, U, p  W4 W; g- R
get-global-proportion
0 E9 I  O8 j5 y4 i! B% ulet trust-value
' [. x% \: e: z% h- ?+ ^, Nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
, ]$ ^9 y/ U# B" L, W
if(trust-value > trade-trust-value)" a) X. A! j" T
[set trust-ok true]0 B, b( W7 x3 }# _
end& `. a: \4 E+ }% ~$ b$ B; ]

7 \! |$ s5 R$ m2 \/ ito get-global-proportion' o. K( l* ]! F
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 v' R' e/ P; o8 Z[set global-proportion 0]* e! n+ u6 R  ~8 \  c, j8 _
[let i 0
& t+ R& o2 t3 q& Nlet sum-money 0
! v* I9 E2 S) U, g/ M9 ~while[ i < people]
* R6 }5 {4 z& b% ~) \  t[
2 t3 v+ V  O( C' S+ h$ Xif( length (item i
* [7 [3 `# U8 a. m3 n( s% W[trade-record-all] of customer) > 3 )
5 T( e6 V$ F4 l3 r5 g3 l
[
7 w) g2 G( l- m* `set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 N& Z+ j) C" b8 J, g6 r, j9 L
]
8 L* r  }& L- |]
; o; s* E% ?5 g9 F, V1 Nlet j 0( t1 N* X8 ?' P' V
let note 0
9 M( h5 ~0 R& B0 Iwhile[ j < people]
4 d: C; v1 y% U. L0 V, N$ ^# G# S[: F/ M/ G# w4 ~* {9 t; X( \
if( length (item i
% J5 t& J1 b2 A" f- i" l6 ^[trade-record-all] of customer) > 3 )
1 ?$ C- q" J, J( h2 t, m% G3 S6 ]
[
$ \/ L. j1 K& N- M; v4 g9 Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# R# ?& t% u: b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 p2 g& Q. U4 F8 V( r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ R8 d$ Z4 L. S+ I5 b% f
]
+ }/ R2 m; b8 l& U* [8 K]5 M# ^: ~4 Z1 A* u/ B
set global-proportion note
7 S: o4 n% K; G# v]+ G. D8 u- s* }, f" ^+ Q( O: M
end6 d0 K' B5 g5 @; @( ^0 j6 a# Z

- h; h/ N0 k: s) z$ Gto do-trade5 m8 a9 d  u  x  d+ d7 e) F5 d
;;
这个过程实际上是给双方作出评价的过程2 J. F, ?( N/ Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( x* K" t" {+ @- C' ]( Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 Z7 ~- n5 O, n/ a9 Xset trade-record-current lput(timer) trade-record-current
5 j) Y  O0 ]' l;;
评价时间
" F4 x: m+ b' task myself [9 Q, W+ n( W% ?0 H+ ^5 p
update-local-reputation
/ q5 x4 R6 W) l' K9 f* fset trade-record-current lput([local-reputation] of myself) trade-record-current
. G7 b" _9 t9 {: z]# E9 D7 ~" w; J# g* Q9 k
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 O2 O% {+ J" Z;;
将此次交易的记录加入到trade-record-one9 s, N$ e3 N3 g1 A3 |" w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! t8 P1 a  k3 R4 K
let note (item 2 trade-record-current )
# \! N" f5 T% j7 U9 c& Bset trade-record-current1 z) X% `7 V& B' u$ [
(replace-item 2 trade-record-current (item 3 trade-record-current))

* Z4 c$ B- Y/ d" p) Lset trade-record-current. E$ z& i8 N. b# a4 ]
(replace-item 3 trade-record-current note)
' S% p3 y& Z0 y. x& _2 x; `% [' H7 w4 i. {3 Q. Y: C* ~  Y
( {# m+ o. D* P' R
ask customer [% }9 Z9 x3 u# @5 E# C
update-local-reputation1 Z, P" O: c0 R5 \  Q8 {* m# `: w# V
set trade-record-current
$ Y7 g& r9 Y7 Y7 \(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 J5 O, Q. d6 @+ n
]
& D. E: U; E2 B, ]
3 L7 e5 x: Z6 H$ b9 O1 V' {

# I2 M2 W0 [* m- ~5 Q0 g4 a& j5 jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' J: |! V( ^& u6 r
. X) U5 x& I/ r
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* S+ P2 ?& B4 S* c4 C;;
将此次交易的记录加入到customertrade-record-all
7 I6 x. `. g( g, Yend
: `$ n5 J7 W8 K7 ?% L" v6 ~2 x9 O3 i. n( e
to update-local-reputation
0 S* q# g. E0 U8 f% _! T8 N1 pset [trade-record-one-len] of myself length [trade-record-one] of myself9 T; a( j  M. a' {( |. U4 Y

" B2 O: Z3 _% ?
- x. l# c, Q" Z0 C;;if [trade-record-one-len] of myself > 3

0 {! H: p! o" Lupdate-neighbor-total0 O( L1 y" z2 n* d0 p% V6 n  `
;;
更新邻居节点的数目,在此进行
5 I9 ~: o5 U  l9 ?+ S% M9 Glet i 3
# @, z' v$ O& V% u* _8 jlet sum-time 0
( X3 H! j8 C+ h0 t9 k5 v7 B# Z. M+ ywhile[i < [trade-record-one-len] of myself]* y3 N+ t1 w* r# E; D
[( ^( P. e" J0 V$ o! |8 P
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ k2 H: J% g5 W9 w6 Q4 C1 [set i
% N* L+ T! p/ E' [1 O* I( i + 1)
( u. ]  X- s) v! ]
]1 e  E, g5 c0 G5 r* |) P7 }
let j 35 B3 V* o8 k) o$ }8 h7 Z: p
let sum-money 0
- E, ~% A' {3 T  Awhile[j < [trade-record-one-len] of myself]
+ M' [, ]! X( A' F& G' O" D( l[
  |. o+ S# K, h8 @% b0 a; c9 {" Bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time). I( f5 g: t0 _7 V# q
set j
! N2 Y9 B9 \' r( j + 1)
. R6 N/ S& c) c9 E+ E$ p* `2 j& \
]% _  G! @( D! H  k$ Y
let k 33 X) l5 [7 x% J4 f* u
let power 0% s8 h% G5 D9 s; S2 }: Z3 F
let local 0
5 F8 ?- g& a, jwhile [k <[trade-record-one-len] of myself]
6 G/ ?: i* l& B8 |% p3 N! b[7 U  B( ~. D. l0 p
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) ' t0 p. z- m+ ?# r
set k (k + 1)
+ o/ n, Q5 i- c]
* {6 ]- @8 P! G9 gset [local-reputation] of myself (local)& W$ P" @3 F; F/ a# O- B! A  @
end
. E  |4 |2 h. ]  ?( C$ h% K# t/ T
# N8 A: P7 |9 r7 Ito update-neighbor-total. T" Q7 Z( N7 |  [; g

9 Y) R! r6 r. O# C' gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  n4 I" q- Q& S8 \9 q
# W/ w- K  S' \8 ], p/ H! ~$ W

" q8 H& U& O- A" p9 B$ j7 Vend" J- t* D. D. {* a4 K
$ w" u3 [5 P( G1 A! u
to update-credibility-ijl
5 Y, Q. `# v* O6 d: U3 X9 y! a5 j) o" r# X! f$ d+ A- I/ u
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。7 G6 [6 z  y9 h( x# f. }- i
let l 0
: m8 s6 Z  Y" J$ J& U5 h$ N! ]& hwhile[ l < people ]# R5 f0 k) p$ d, J, T. R' J7 y8 D
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
! U) w7 K& }7 x# W8 O7 d  ^' S# a/ @: ^: T[
/ G0 S* g7 n/ L5 Wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 a/ _% t0 E) `' Y' L" ^# g" R, Hif (trade-record-one-j-l-len > 3)* q* m4 C; e* I; I2 y4 [
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
1 X* E; R1 E7 `$ Y; Glet i 3
' \( F3 y; D7 I6 S) b1 ^3 S8 llet sum-time 0+ o' U: h* a+ {+ S" V
while[i < trade-record-one-len]
5 X' S6 o' p! B+ \- u8 }[
" j7 t# ^1 }- S: ]$ `, vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ D6 A% j  Y" _& g; z
set i
' L5 s0 `5 N8 T1 |# `, W* h( i + 1)

% O$ t! n2 d( ], l  O]
0 d2 E: X5 G: b3 S/ H  R- blet credibility-i-j-l 0  \4 X$ J+ P% y5 f: e
;;i
评价(jjl的评价)
- W# N5 p* A7 t" U' Y. y5 Vlet j 3
5 j! E. q: w! V8 B; l5 @; W& wlet k 4
- B- V  L3 P" B- f. n5 J) bwhile[j < trade-record-one-len]4 K5 Z# |% R5 }5 b) T5 s
[/ i! h7 v" a% R$ e' b+ S' d) L
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉8 K8 d% I; [, [% v
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)( U& k& n; z( E7 s7 A$ s; N
set j
0 l# t3 u. _1 U0 R' C* J. a/ V( j + 1)

: [/ _4 x; M. h/ K]8 D/ P+ T. e" K" K$ o
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))( K2 K/ K+ H+ o; I& E" _! ?8 F
( o% ^  G+ a: C$ g5 U, A

% q  x" k6 p& u: Jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 e" U; I4 I! D, t
;;
及时更新il的评价质量的评价
& \/ g& R; q9 v& `( _set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! U! r0 \+ H0 q4 K( Z5 }
set l (l + 1)) B" L) _0 M! v( C" a5 Y6 h# F
]* {$ C0 b+ r# r/ f1 @2 U# S6 b. W
end
2 i0 ~& F0 T! T6 i
$ _- u: X+ H" ?& |: Z! g0 P1 z, oto update-credibility-list
) _' a3 q7 c" z# g8 l" elet i 0. f# X  A% A0 {
while[i < people]5 {0 x% U8 F0 z
[; [# z# S6 b: L3 w. S- d$ o
let j 0
* W: N, G; c- Z' }# u" mlet note 0- k" H6 C! h5 a- E
let k 0
, T+ t: A! C$ c( O4 d;;
计作出过评价的邻居节点的数目$ U. y: h# {# V; T/ ?' j8 [
while[j < people]
' {2 G7 Y  P3 X1 |$ W4 n% j[6 G# l/ X9 g/ P$ m# S
if (item j( [credibility] of turtle (i + 1)) != -1)$ u+ E' T+ k) F
;;
判断是否给本turtle的评价质量做出过评价的节点
6 l5 `, M( d% K  j8 U[set note (note + item j ([credibility]of turtle (i + 1)))# Z& c9 F+ q% d6 w$ Y( P) V
;;*(exp (-(people - 2)))/(people - 2))]
6 ?8 _4 ]+ h* S. @% K, E  g, e% v+ @
set k (k + 1)3 c2 K1 c  b, t& [5 @/ Z5 v& L  K
]
) M* l, U5 \! p3 n$ S9 p, Bset j (j + 1)
/ K% O2 }& f0 e8 `]$ i6 K- f8 R- @8 w, b: V
set note (note *(exp (- (1 / k)))/ k), ?& _% C* ]& [; a' t1 _
set credibility-list (replace-item i credibility-list note)$ L8 c$ X/ D2 ?7 m0 T  c
set i (i + 1)
0 Y/ m7 Y! ?  p6 g# \2 {5 L! W1 J]* y( a" r. y$ r, f  n
end
' k8 I2 a, z- ^+ a" e, G4 l0 A, J7 N, z9 L! R& G. E: Q
to update-global-reputation-list
3 [' G) ^, r0 a" d" M8 b- f2 G" E7 slet j 0
5 C, D; o8 w- k* K9 z2 Jwhile[j < people]+ R2 N/ n- v1 Q, U. Q$ }
[8 q7 n0 }) K: S4 @$ |3 S& |' i
let new 0
  q$ J" }8 ~5 d. l7 L$ i9 p;;
暂存新的一个全局声誉1 Q5 ]* a, G: g
let i 0. i* L/ e% V; @/ k! }
let sum-money 0
1 U: u8 @  a& d5 s0 S/ Z" \9 U- dlet credibility-money 04 O$ r- r9 q1 Q  T: e
while [i < people]$ w; g; f7 O/ b  |
[
% n& f  U9 c- V, D. k2 n/ mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 }, K# t1 V3 Q% J7 Z2 rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! P3 \9 U4 B) Z. z1 [4 c& h8 y
set i (i + 1)  x4 L; G" [  T; @0 Y. |
]
1 V$ w1 h7 g: t% O8 |- E2 Dlet k 0# Q- t2 i. J3 H
let new1 03 D: @2 T2 \' Z
while [k < people]
( ], w. p0 J. w. Y7 s# N[: t" B/ K* f) ^  E+ G3 o
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
) D/ C8 ^2 {& c* A! M' wset k (k + 1)
# J3 o3 y  I& B7 q$ C]
6 R$ `+ @" q' M+ k* T8 C3 Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : ~. b. ~1 c9 p# Y% V
set global-reputation-list (replace-item j global-reputation-list new)) j2 {- T  z2 \) w; V6 y% d5 M6 @
set j (j + 1)
5 X7 z9 J- \% f) t2 o# _) r]
4 W- x# j( q; ]$ B. n" L, E3 Zend
# ~+ x" \# Y' P0 h0 k3 Q3 F" }" Y( Z3 _" M3 S, D$ J7 A4 }
& G) q: X. ^$ s( j; J8 C

( D2 r# _8 x# F5 Yto get-color
+ N/ d! Y% T1 `% C7 c8 q& d
$ j  T% R; B* r5 }% Gset color blue
0 Q+ h9 A# r$ t5 S4 q
end
$ h0 T8 Y% V" H" ]
7 B" [9 R+ [( F7 x# ^to poll-class+ z, k3 `0 x; T& A5 ]
end1 Z% ?% O6 r9 t# ?8 j9 |

, g; E5 r! _) o$ p: r, o9 V0 ^to setup-plot1
8 L% s% x0 S/ m, l/ v0 T/ _/ C4 K0 O0 l$ U- k: v/ }. J2 V+ K5 i
set-current-plot "Trends-of-Local-reputation"

8 Y  H7 X# V* |0 c  }
2 Z9 V: B4 p% E0 d- {set-plot-x-range 0 xmax
  j/ g+ t& n7 V0 ~
& Q+ O8 W. Q& V" R. e- L
set-plot-y-range 0.0 ymax

$ }+ u9 z8 t1 F  Z# I; p6 iend
% |0 P3 d0 n4 ?: ^- H1 h# K, g1 l3 D* `: B( x/ C* B
to setup-plot22 u/ J# @6 f+ d: ]! H( s) X

* A" {" b- a- M9 F0 }set-current-plot "Trends-of-global-reputation"

" t  @' g4 D! {8 v- L) U" G+ G% p7 e+ x
set-plot-x-range 0 xmax
5 q4 v  K" P5 g& v3 w- D

0 e& \4 u/ ~4 yset-plot-y-range 0.0 ymax
5 j/ i5 Q5 p6 {# ~( B; M9 l
end* W  ?/ Q6 I+ }& m

5 @$ J$ K; `# O$ Jto setup-plot3  q& z& y7 H( g# n, B
- z9 g& Z) I* ?. a5 u
set-current-plot "Trends-of-credibility"
9 J6 Y  ]7 S& j8 E! B2 e4 F
& @7 w; e$ ^8 M  }! L  e
set-plot-x-range 0 xmax

# D( n$ c. ^  S; {
. h- v2 j: v  bset-plot-y-range 0.0 ymax
4 Q. k% M' h8 R6 d: U! [
end
2 X9 g/ [, P' @7 V+ X& @# ]! M* o- n, E9 u4 f: z
to do-plots
: W* l, D8 b4 w% Q& p, Mset-current-plot "Trends-of-Local-reputation"
" s. Y& Z3 J0 m% Y8 J, O! Sset-current-plot-pen "Honest service"5 B' s7 \2 H+ d$ q4 J
end
5 w1 u/ k+ i4 u4 t" N. {5 ~$ w/ ]" I+ z7 A' e8 b/ j- G
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
/ c  _9 M" C" l
$ Z% D9 a. q$ {3 p2 h这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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