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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:0 h) g/ Q. X& A$ R# n; r5 l
to do-business ) R5 ]9 s; n. u! i6 M3 Z
rt random 3605 D2 k! P2 H- F
fd 1
& Z5 P0 c, o; e! x ifelse(other turtles-here != nobody)[
2 I0 Y7 c3 \/ d" c8 y2 F# |   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.
/ j$ T2 L9 h* J! p3 B   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 T  ?& z" U% h8 u8 g, [  R0 N
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  \7 ~$ k+ D  z2 d) ^   set [trade-record-one-len] of self length [trade-record-one] of self. V2 o, |" D% n8 ]4 m; g
   set trade-record-current( list (timer) (random money-upper-limit))! I* x; @0 [2 e! B" G0 _
( [( Z) i, ]/ Z# V" \1 H3 {
问题的提示如下:
7 W) i& Q0 J* h" j
/ C6 x1 f  Z* K8 w1 [error while turtle 50 running OF in procedure DO-BUSINESS+ E4 \/ |* R# A) J
  called by procedure GO" e. Z0 t9 q/ ~0 k) D
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
& ~! n' O4 N) s& G4 b
(halted running of go)
+ X! j" S0 b( a( G1 L7 T1 v& z+ b5 E: `8 i" Y
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~~: b; S, h, W4 i, Y
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
5 e/ u6 N9 u  ~6 Xglobals[
1 t0 x0 H9 P8 p3 k. o6 \xmax
% I* x4 @, K: C: F' Q2 a7 Tymax: w* L- N! H. h8 [2 v* l
global-reputation-list+ d: q% i& y! w0 t% e( _
5 Q; q) y0 w: V" l% B' w" c4 h
;;
每一个turtle的全局声誉都存在此LIST
+ j& j/ d% S- C% ^) L! P! fcredibility-list. [+ Z" G* M6 t
;;
每一个turtle的评价可信度+ Q1 ^' T) i6 i1 P6 [
honest-service. y4 a" L& f7 }5 e* a( k# t
unhonest-service
9 P- q- W6 }$ ], t" k+ v( _oscillation
! U8 p7 H" x# X& S8 M& Zrand-dynamic. X6 x- f" a, g; n. Q
]
' c& j( F0 K1 C" M
% w, t/ |/ M+ w7 _7 k2 @/ F, rturtles-own[
4 ?& L" O% x" \# I) `trade-record-all! P5 P. c4 r% v/ J
;;a list of lists,
trade-record-one组成! p' O* u+ v% A, e6 W( w2 {* Q! q
trade-record-one
) t, Q; `- {5 i: b& ]+ H! C. ^, c;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# l3 K. o: }/ V% R( i

" [, j4 V$ r1 U5 ~4 ?;;[
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]]/ d' P: v& b7 A( \+ w
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]
9 c/ ]6 ^" g& m# ]6 [3 _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
$ V7 H% p' }. wneighbor-total0 g. D! x, r2 X2 T* |/ {/ z
;;
记录该turtle的邻居节点的数目
. Q' }3 C5 J: `* qtrade-time& E0 j! h' V) y1 b1 ^
;;
当前发生交易的turtle的交易时间" E3 o' V) }9 H
appraise-give
) ?' v( p; r2 m& P' t, a$ O;;
当前发生交易时给出的评价
( J" v! b% C2 i; jappraise-receive
* `2 _7 W( Z& O;;
当前发生交易时收到的评价3 u2 S- f' h( i9 D) m
appraise-time: g; n9 r% k  D4 X! D) R% C
;;
当前发生交易时的评价时间/ Z) T; ~& w% ], R0 j8 E6 v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; l! q% l9 }3 ~) |trade-times-total
' K  F, S# V8 L;;
与当前turtle的交易总次数
  G  h* U7 F% o% vtrade-money-total% w# z4 r" Q) g9 P5 S7 x
;;
与当前turtle的交易总金额
# j* R+ ^  U, r, J- V* r: Ulocal-reputation0 E% a& }  t0 C& x  w" q
global-reputation- Y! |( B0 t! S* P9 u. U. M+ y9 U
credibility
& u# y, u5 R* A1 _;;
评价可信度,每次交易后都需要更新9 U' e" X/ _! R  `" l  I
credibility-all. |0 p( A; d- I6 q% \) K" Y
;;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' d7 ~* U5 }0 O/ ~1 \) @6 p
# Q$ @+ A& E* y; ?5 g: x
;;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" \, E& ~, @# n
credibility-one5 `/ e2 w5 k8 X$ f! \1 H- R& _
;;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
- Z+ B/ {* `& v! b8 yglobal-proportion9 k- _: B% N4 j0 e, n  `8 ^
customer1 L, x  B" ]. ]& J! U$ H  O
customer-no+ K/ G1 J6 g( t1 |  w
trust-ok
  c6 s8 H. y7 ?3 J; _; Wtrade-record-one-len;;trade-record-one的长度
! C7 d( z/ A' P]3 J1 k5 x2 R8 y# h, J

1 ]+ o" M5 X8 t6 X9 k;;setup procedure
% q; M5 L# l7 j( U) S( J
2 Y1 u3 Z" N9 k, ~1 y: dto setup
" i$ d; Y' E  k& G2 j7 o3 y
5 M7 H5 B7 i7 t1 ~, ]9 S& e% q* `ca
' j& {: P4 S% j' S2 C

. l4 p/ ?' o) V4 e( Linitialize-settings

3 i* S( H& A8 d; s; H# k' f3 h1 s4 Q$ h. X- O9 d: b7 u0 i  Y
crt people [setup-turtles]

* @3 _7 O+ p2 q) O4 d8 |( Y3 R* J9 J& z7 m  K1 }9 k
reset-timer
8 H8 Q, D- }% W9 A

) W8 k! k5 e) T4 I/ X# Wpoll-class

' \: u# ^: i) u, A6 L9 ]  U& o" K$ f
setup-plots
8 g+ i: z7 M5 j
' Y0 P! E; J  h) `8 d1 P
do-plots

, J# k% J$ D) Rend
; L" c4 b: R$ a& \) s; e7 S# I1 m! a4 p4 D- L% r
to initialize-settings: d* o* w0 I( d& w- ]
4 `/ E( `+ P* {* I
set global-reputation-list []

/ a4 J" o7 `5 r% J; ]* ^6 v9 z9 Y6 `5 p
set credibility-list n-values people [0.5]
- x3 L9 X1 o. m

4 L. S0 g7 o/ v) Y+ h9 xset honest-service 0

% r2 E, Y- g- r( Z8 |# B
) ^+ g. h7 [' x3 w. Y# h! ~3 yset unhonest-service 0
# Z  n9 ]; h6 I5 k2 }: C' G

1 f2 h9 k5 _* s3 Uset oscillation 0

: V4 ^" b$ \% z. c5 l' W
( ?7 }% v4 D% z) Yset rand-dynamic 0

/ w3 M" P$ x( _& B4 j7 {% mend0 \  \, U. M  C2 W" p! G( u! _5 x$ z( _
- r( L; P, Z6 S- c8 }
to setup-turtles
! B9 z. n: ~6 @# l( s# Z2 R5 Wset shape "person"
  D) G9 w9 p# [! [setxy random-xcor random-ycor2 D6 e3 B3 s* T1 V- s
set trade-record-one []/ e. a# g* q$ q0 S6 u1 u0 a

6 {! b2 \4 q; Y, _0 G$ e2 Yset trade-record-all n-values people [(list (? + 1) 0 0)]
9 P+ G: G% F4 S4 X1 o- _

% V6 {6 s, u2 o6 nset trade-record-current []! _: t" {3 y9 X+ e6 }# y9 H
set credibility-receive []
: J5 K2 X- d7 ~  \' Iset local-reputation 0.5
$ K2 L! Z. B/ X% E; ^6 gset neighbor-total 0
: ~# Y" a) s. s2 p5 p6 C6 I3 Wset trade-times-total 0" w; L; Y& D" I. P
set trade-money-total 0
+ b% p7 p9 O/ N& b# L7 Xset customer nobody
( ?  J+ g" n. d6 L6 e6 v! [, wset credibility-all n-values people [creat-credibility]2 z2 W" Y4 S' {: @( N; G& x
set credibility n-values people [-1]
5 m3 E  X: b/ b; W6 [" o" H6 J" ?get-color9 {( j0 c1 T% w: A2 T  t
! |5 i7 j- F) n
end
" g# `6 I  D0 s# ]  [  e: F0 S& a0 S, R+ R: F6 L
to-report creat-credibility1 H$ g9 t4 x! v7 t, `1 V' C- p# |
report n-values people [0.5]* a+ K+ v9 |8 @5 }
end  t# X+ r! _4 l$ D) S# F5 u) D" U

1 M9 G- w* |/ S3 I! Z: [to setup-plots
+ M( V2 T7 a. h) G$ B& v  }
6 }6 n0 [* G; hset xmax 30
! K" X) o) ]7 |/ J* J# `" U7 R  J
& q- E- {$ s8 M3 W0 ?
set ymax 1.0
$ L7 M: ~) u. N. p' P

; H0 x7 c5 f2 d1 P. c3 S5 u" {clear-all-plots
' `$ {) n# C4 j6 n

' B' ^& e' h, c/ _4 u- N& N  Hsetup-plot1
  e0 o0 j0 t3 ]2 B
' a8 D2 l: o- x4 v
setup-plot2

8 ^8 C2 f4 a% }7 \1 `
8 v3 H, ~) ]3 `) r5 X3 [setup-plot3

, I( F5 o$ B2 U% rend
, u8 P5 j- S5 m" k9 ~" X+ x
1 }, G$ Z6 q7 {5 U;;run time procedures2 D$ i& u* G' o

8 L0 ~+ t  O% x9 K5 e8 K/ Hto go
5 O- V0 y. O1 A$ |9 e
8 O0 _0 R% y' r: yask turtles [do-business]
  q( `4 N- H( h1 R: c% j
end" e4 f, C- P& I5 I1 \9 U

2 a9 c* O; S  a. J4 x7 k2 {2 l$ R# [to do-business & V8 w! S4 ^  ~/ v$ w
; _* V: B7 f' C) `& D" Z3 }

3 J" g/ n; [" }* Rrt random 360
, ~9 I% s6 X, ?0 L2 i

3 W4 O2 g7 u% l' @. Qfd 1
- U$ E; H" w1 D& L4 Y6 a. w
2 h* {7 e) I6 i, J8 _
ifelse(other turtles-here != nobody)[
4 F* Z' A3 h/ p7 p
* O1 n7 ~4 }4 Y& A- c
set customer one-of other turtles-here
9 l; ?$ b5 `) ?' ]

: }. Q& Z- S6 r7 X& @6 n;; set [customer] of customer myself

. W* C! s4 V( L, E* A2 A& i$ ]% b+ k) S% w- p, {! H
set [trade-record-one] of self item (([who] of customer) - 1)1 {1 O+ A; L# i/ r; b
[trade-record-all]of self
7 M; y/ e% z$ K! I: s, l;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, ]% [1 d; y9 N5 B% Z8 Y3 L+ V/ _$ \! C
set [trade-record-one] of customer item (([who] of self) - 1)3 `: U! }4 {4 n7 [8 k* C8 L
[trade-record-all]of customer

6 q5 R9 r/ T) D# i5 S- y+ ]$ m6 K1 s# g; t7 ?0 d: K7 m; j
set [trade-record-one-len] of self length [trade-record-one] of self

% I2 X$ U3 R) N( N0 y( b: E) \$ t1 i2 R: X- `- @% k- v8 L
set trade-record-current( list (timer) (random money-upper-limit))

: u& \, Y' e/ a9 H2 v, `* r
2 {' B2 \: L8 ]ask self [do-trust]$ o8 ?  H- o: b
;;
先求ij的信任度- Y. h. J; W. M

- E2 ^9 d  A& z2 F4 {+ Q4 Eif ([trust-ok] of self)
1 @4 B& G0 a0 K: M- M  _- m  \7 g;;
根据ij的信任度来决定是否与j进行交易[8 j/ P5 t) D6 c% r/ }
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 _+ R9 C$ U" Y6 @; c( x% ^  F* w

3 }7 T6 U- A, d, T/ V& ][

4 u' E( s# e7 x& |. ]+ O; S* j& \( A, u- J0 W
do-trade
' Z9 Y, u+ ]3 Z4 c. ^) T, |2 x
. t4 I% X  ^' B; X6 y: |" _: [; I
update-credibility-ijl
) u* {, T' ?! F
" s! t8 Z$ `' m' l+ |
update-credibility-list( B9 G( i' b0 p! _. c8 c

% O8 b, s. K. j. _; `% l( z) M5 ~9 K& R
update-global-reputation-list
7 d+ y; h* d+ h$ ^

% x( f6 D1 {: m; U+ Npoll-class

, e. E. B6 Y+ d  _1 ?! t% M0 v
get-color
) d5 v8 b: K* T0 [2 N

' O% d( P; }  i, N+ g/ {]]6 n, T8 [1 \8 X/ S+ Z
+ v' U( Y8 A* ^; }8 u
;;
如果所得的信任度满足条件,则进行交易' L& b" A& [  h: F/ f

4 w9 l: t4 c( ~6 p8 z8 ~- X7 Q[

* N% {. ]! a! B2 {- n) S! }  G  `  a/ j$ I/ q/ q% G
rt random 360
+ b( c7 g5 ]& m1 c3 n) k; j

% s2 `) S" B; [/ ?' ^! g* a/ ?, Dfd 1

& t/ P7 Z- H1 l, R1 t, V$ }' q; I1 s& H4 r
]

& R5 g# A0 \/ o% i0 @# I- t# R7 c# w2 T
end

  }/ K; X3 A( Q* m; H6 z  C  R" q! O, ]6 w: Q2 s/ w, `
to do-trust
& B/ X) Z% V' K6 h+ H  t( R# Lset trust-ok False5 Y" ^$ o8 M: p5 q9 v5 x
7 G' a, X% C1 _
- O+ J7 ^+ A; K8 e; b& Z' K; g
let max-trade-times 0% p- H9 E% n( P( |
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 n* L9 e2 E5 J! g2 Y: |let max-trade-money 0. C9 _" p7 P# P* b4 d. Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  [3 g" x, E: V2 ~4 z! f6 K
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  s% Y  T( y6 g8 }! {* q/ I+ t

3 @2 e: g5 @2 w6 T; T2 S# @

1 H4 J' W; N. F2 Wget-global-proportion
; N  q1 o9 ]4 a+ @% Q+ Olet trust-value2 M5 F4 i' e1 ^% u8 }3 I
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
. D8 w: E! o) m) Y
if(trust-value > trade-trust-value)
1 j9 y. r$ ?% \; c3 f( d/ {[set trust-ok true]+ _. i9 m" K* _% t+ O
end
9 C0 i6 O7 u3 u( O4 l% n0 U4 a# u
to get-global-proportion
+ q1 M2 Y  ?5 B1 Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 G& a0 e& T, y  t' v
[set global-proportion 0]# D9 _6 k7 H& y2 k8 W& Z
[let i 0
( d# S2 j! ~0 N3 I' hlet sum-money 09 E$ P. i% |1 K; L
while[ i < people]
& j- f% F0 g9 }[7 ?% h4 [! n& _8 ]1 I* S8 Q
if( length (item i( ]# b. [8 i3 ]8 j
[trade-record-all] of customer) > 3 )

0 N5 \% Z$ |, w' `1 v4 |) Y[6 C: F, j: u7 a: C. _& d" w# ^0 h
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! S( a# z  o) d+ |* u3 q
]
0 o& A1 f! E% {% L2 X; }' D]2 U4 b2 }9 w5 H. j7 j
let j 0
0 M  b* J# u0 m! zlet note 08 r: n1 m9 \2 r. E( k2 ^% a. Y; z
while[ j < people]
0 }4 }7 M- _* C$ a[$ ]6 B2 U" R3 u3 `) T$ w8 m+ [  y
if( length (item i
. z0 T* p" J* i[trade-record-all] of customer) > 3 )
! t. h  x' b4 J7 c
[7 L  l6 z9 ~3 w* T
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  i. ~) K' i+ l4 Y) E! i* m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# @2 U/ I" o6 M! F. V2 X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: K1 R- S/ n! a6 j* d5 H+ r0 y, n]' w- I, P. c9 ^1 ^. u! Z
]: c$ s7 I3 ]2 e: J
set global-proportion note! C2 @7 O% j; a& `6 B! m1 V
]
" N5 O& A4 }6 a' @0 aend
( D* S8 W5 c; y+ q+ Q
2 q; l3 h( @5 B2 k9 ^( Nto do-trade  C& F, t; R. T: |
;;
这个过程实际上是给双方作出评价的过程
  b6 G3 Z- ^- o$ ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( k8 @7 v6 W9 d& h% m7 D3 m6 Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 s% a! y; p1 {* i. w& t
set trade-record-current lput(timer) trade-record-current2 G% o3 O% G1 W* z  c3 Y9 L
;;
评价时间6 ?4 v4 z# m$ C; j0 A( @
ask myself [
+ N" ^. O  y) T  gupdate-local-reputation
: }* U1 X$ A$ |  q) ]set trade-record-current lput([local-reputation] of myself) trade-record-current; @& s2 k+ i/ z2 }
]
$ s, N  g% i3 W7 X: B: z4 Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 ^# E$ ^; e) i6 {
;;
将此次交易的记录加入到trade-record-one
' M( J* S) ^* g5 [set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 }1 l9 `/ g* _, Qlet note (item 2 trade-record-current )
, C, h  Z/ W& Qset trade-record-current& P/ d/ b& v) ^- b( p' V# B
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 x& @& P/ g7 L$ C" d* t; V* w1 Pset trade-record-current$ a/ d! s2 ]. j4 E, F$ @$ V
(replace-item 3 trade-record-current note)
; Q% t% Q: Q  Z+ W4 C7 n7 S8 p
7 i9 I! d% T  e
" [& O* S1 V. ~  v1 N5 Y9 e
ask customer [
% \( n' Z. P" k+ Tupdate-local-reputation8 w9 k2 I# Z* M8 a/ Q8 u4 I1 y
set trade-record-current$ F0 A. o8 `( a
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- X- N; E& N+ z. ~% M1 y$ r  e
]
1 C4 P. J" \8 `% P& `
' H* W8 g+ U$ K8 n
; \+ y: X$ D" G( ^" j, c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  \% E- q0 R) J4 K

% M! M* S' O; C2 t" [" H9 ^3 Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" F. V8 B# V. Q3 u
;;
将此次交易的记录加入到customertrade-record-all& L. `* [8 w& @* d6 Q; ^- k
end
8 b( @( [8 \+ E1 W0 B  U' ]  K
: X# h2 Y' ~3 u9 Y. p0 i$ X5 k1 }to update-local-reputation
3 v  o  a2 V* D/ H1 Z  v& G- xset [trade-record-one-len] of myself length [trade-record-one] of myself
$ k. \: G+ A; d1 F0 v8 Z
3 V3 K% w: ?4 U, `# r
& ?  G6 P( Q% e: Q;;if [trade-record-one-len] of myself > 3
: g1 L9 a% W; }+ l  w' o
update-neighbor-total0 B, [" l& L* L2 Y$ T5 g, X6 O
;;
更新邻居节点的数目,在此进行
3 j# w1 H; s, r: l  ylet i 3
8 i+ {' I7 K1 [! A8 [: J1 Elet sum-time 0
2 x( N4 x1 _. w/ p# p+ Qwhile[i < [trade-record-one-len] of myself]
0 N, y9 ?( H+ d[
3 [7 ]0 g" Z% nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& ]9 _/ `& r0 L+ L' v. V0 f
set i
8 H6 t. w3 Z$ W7 d, \# ]' @4 s( i + 1)

& g/ f) X; J; t* k0 B8 o]' v. q% [! @0 _% u3 z" `7 n
let j 3% F% G& L8 g# j% ^
let sum-money 01 D5 G/ G1 k5 c9 S8 n6 I
while[j < [trade-record-one-len] of myself]9 r( ?' O9 I; H4 A- \, \
[' C4 J- \1 q6 y; E: Y
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
7 C% R, O" M. ?$ zset j6 T' b* m3 \3 E; [* M1 ]
( j + 1)

! [% t. |4 Y! o4 M]) Q- X$ R' Y4 K& w# a, c% E0 M$ b
let k 3# K) |( h9 {, ^/ ]
let power 0
" p& J; B. D3 a8 I- S% `let local 0: \6 X& E5 y2 q2 ]
while [k <[trade-record-one-len] of myself]
% _9 t' f1 a' T$ y[
  I3 g- {/ \7 U' g$ Kset 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) - s/ C+ H8 w% `) l- R2 d* [, k% ~, Z
set k (k + 1)
7 u: Q. z$ X) o' @( o]# T8 w8 E- f. u+ s2 m, w9 Q
set [local-reputation] of myself (local)1 x1 `4 h( v3 g1 C& A
end) b; |/ n' `0 E, e5 N% \

, }' d4 R; m% kto update-neighbor-total( e% N! q: F( O/ a: I

5 T' U6 m8 G# t; ~' b. wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 `! M) j0 i. q' O4 o0 _) a6 [1 U1 P0 I

3 Y  h: z  R, b8 `end8 J5 U* F7 u1 J' c' }7 D

8 M5 N1 F- I% A8 Uto update-credibility-ijl ' F% J. }+ p3 m

3 r" J' v4 D! q: v;;
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。- R1 L/ H# }3 I+ b
let l 0
: m% p0 X4 T$ i. W& Vwhile[ l < people ]! [; v( O; E- y. e1 v" {
;;
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" a( U6 f) |) {% f3 l8 A/ h* `' G
[9 Q/ s) k. c2 E1 ^- [( u9 Y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 v! I6 L5 o. |5 u* d1 `3 q" rif (trade-record-one-j-l-len > 3). x2 o( t3 y: B8 q' [
[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-one0 t. n2 d0 n! V& @
let i 3$ s/ ^! ^5 |& k( E* l
let sum-time 04 N3 l" M3 u  g# C- V3 V
while[i < trade-record-one-len]' m, K9 Q2 u7 ^/ y0 c0 \7 L
[. @$ l) V% ^2 m6 a4 g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ ~* J9 m! ]/ X. p- ~$ v
set i9 o+ L- G9 ^3 p0 o
( i + 1)
* }! A  ^9 I' }. |2 l- [% _4 ]
]. a6 [* P# W, x, m) _
let credibility-i-j-l 0- G7 I  \0 q. w' o" N
;;i
评价(jjl的评价)
. J* Z, i: }& f  S: Z4 f8 clet j 3+ g0 u2 J& i; l; b/ V" B
let k 4
+ I4 d% [: l7 W! y( W  |while[j < trade-record-one-len]  ?5 r9 I/ f9 ~8 U/ f/ V. O" {! ~
[9 {% ^; ^7 l2 v5 D* R
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6 W$ v7 w+ u# L, N8 E+ E% Y
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)
$ n" l& R4 [$ b$ Y' V. T5 Y* Xset j9 J5 \, W; E) ]+ W4 e* E6 R$ _
( j + 1)

. I# q7 x6 l" D) T]# [- U# P1 X  k, c+ H7 J
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 ))
$ `) }7 [3 x* k+ ^  r
' `! N/ l& J( a! M6 B
1 i3 T9 _8 k/ `4 ^0 n+ T6 }
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& z: D: v* u6 V;;
及时更新il的评价质量的评价, _7 i0 T8 {" ]* u
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 P5 L! U% N+ ^3 A6 g( E
set l (l + 1)  u' |8 P7 o4 v5 V. ~- U
]
- ~) D, o, U$ n( \+ e+ }end
! }5 ~# F% Q% L# g1 G' O9 p' g9 I6 H( o& F( N5 K+ a
to update-credibility-list9 L" ^2 m4 P) |/ k" f
let i 0
0 X+ p7 m$ c, E, T7 cwhile[i < people]$ d5 h! D2 E+ `9 i+ e) x7 y0 w
[
, F. h: `) H) slet j 0
" g1 \* j( [7 S! ^5 ulet note 09 x* X. |% B' X6 l5 }) a' I
let k 0
* q, F! b9 Z4 B;;
计作出过评价的邻居节点的数目. \! C. N# _7 [+ R
while[j < people]
7 U2 j3 l2 z7 r3 n! @5 W[  q4 B4 i% {  n
if (item j( [credibility] of turtle (i + 1)) != -1)
1 B; y  x, Z& O! g$ [;;
判断是否给本turtle的评价质量做出过评价的节点! o1 o, R, Q9 g; }& N6 z7 G
[set note (note + item j ([credibility]of turtle (i + 1)))
1 R; D" B# A2 S9 Z/ l;;*(exp (-(people - 2)))/(people - 2))]
) a2 s0 I7 o& o8 j3 A
set k (k + 1)3 Y/ G0 a4 k7 T' y1 D  g& a
]
6 L  T6 f7 r2 h$ Q: d5 O/ Qset j (j + 1)" i  e! g- z% l5 {- y* t
]
9 i) @$ |; N* x1 gset note (note *(exp (- (1 / k)))/ k)
; }9 Y, I" C. Z6 ~2 t6 yset credibility-list (replace-item i credibility-list note)7 f8 j3 z! p; h- s+ a5 Y3 f
set i (i + 1)
! ^! s$ @* ]" v5 T3 @; J]
3 |. H7 d+ B5 }4 Q- O1 l' ?$ Aend
' u) _& f6 ]! @$ L+ J& z# L& A. K! ^) I. Z
to update-global-reputation-list0 m  X, V& \2 s
let j 03 s$ Y+ N; R7 ~
while[j < people]
+ j7 ^1 Q$ S7 ~1 h% x[
8 V% z5 t& R" V3 `( B6 D' K# Tlet new 0
9 [6 e7 }+ E' I0 P8 m  L8 Q; U/ L;;
暂存新的一个全局声誉  `$ d$ q1 A! v, c2 d+ x4 W1 U
let i 0
. {  L: s  g. H* V5 t) Rlet sum-money 0
' y* k3 l0 `# M2 F, K9 z& d! Ulet credibility-money 0
/ a( n6 s% `5 v: o  o( Nwhile [i < people]) B0 w4 U  @3 O9 j: P
[
. ~8 ~! }0 ?; q- Jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 Z6 i# J) z! p( ?* T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 w/ v5 Y* I2 qset i (i + 1); L, h  c' D9 C1 W2 j, {
]
) o3 g! z( Y1 A( ?  q9 Jlet k 0+ S0 |: v( a' T; x$ u- M
let new1 0
( r3 z2 e8 n+ g" uwhile [k < people]
! ], w3 e6 F% _( o1 U1 N[$ g. i4 I! m% _: x6 l( f3 b
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)
! e: H  ]) w3 r! l) u, i" \set k (k + 1)
* v. `& j, J4 P$ ^]* m7 @1 u% E  G6 [8 D8 P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / {- r1 e5 ~! V- [# U1 F+ J
set global-reputation-list (replace-item j global-reputation-list new)
- D6 A7 [' \' c% Qset j (j + 1)4 l* o6 I+ M- k: ]) X4 N3 K
]5 X6 g7 q  u5 C) K
end$ Q! V9 L: {1 R4 M( q2 X" X

, p  |5 N' P% |4 x7 R: u( d* O3 ]  b7 g: F6 l1 F9 x1 X
% ?1 Q8 |/ X' ]7 \1 o/ N  j
to get-color
+ h- p9 O. L( h5 J- }, q- a: S7 x3 g
set color blue

1 |& @' f  i9 W  J' yend2 a" i7 x* \  z) v

7 D% _! m8 \( V  C* H( Hto poll-class
- O3 [, X  d) m) C, `  }! m3 Mend: @+ c9 M1 i) _' z

9 T4 J+ D& R" c: o( n# |2 j5 `5 U, }to setup-plot14 w7 G2 a: X! e

" {9 A( g' y, {0 V7 C$ J* bset-current-plot "Trends-of-Local-reputation"
" G$ x' M6 v. y& m, `3 Z8 W
1 w* P  ]0 D9 R$ V& i
set-plot-x-range 0 xmax
2 C; K" {! M  m: r+ e

7 ?# m1 I* b. t; N# ~; X/ qset-plot-y-range 0.0 ymax

2 o! e5 s& m6 s! Eend! E7 t1 k8 |. {* @( }. m+ D

% u. y2 J8 I* L5 }9 ~" h" Pto setup-plot2
  B9 Z* s4 g0 s- a  p: S" D1 m0 N# [
/ S) \% o. P% k% q6 _' _; cset-current-plot "Trends-of-global-reputation"
+ g, L; S( D2 l

1 D% c9 h9 O' u  t# Q6 c9 M# Fset-plot-x-range 0 xmax

% v% R0 V" G6 M8 e! F- \
+ \  E0 u, e1 L; q- {5 ]6 @set-plot-y-range 0.0 ymax

) |* l) S3 ~% L, d5 ?$ _: Qend
# |6 y8 {$ \6 x- N% z) \) p2 Z# `
to setup-plot32 d: m( s# b5 n

$ L7 e; F- k& h  ?set-current-plot "Trends-of-credibility"
% n9 Z) W/ \6 r. ?1 G
! q; R3 h1 Y1 m5 s
set-plot-x-range 0 xmax

( f4 v- f0 o  E% R) [0 S9 a0 ~
7 k2 N3 D4 j1 h' b: Gset-plot-y-range 0.0 ymax
  i2 u1 [7 F/ H5 I2 F
end
( |3 z: O9 g0 [+ A
) F. _( X+ W8 Z# {/ nto do-plots& \3 A2 F8 t! }, d
set-current-plot "Trends-of-Local-reputation"
* t: L/ s' @. |2 q0 \+ bset-current-plot-pen "Honest service"
, w. B" |3 p0 E1 ^- a2 d! m# zend3 Y( c+ P$ i( R/ p* Z
: _# t* Y8 r% r) P
[ 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 L1 N# X: B1 [0 K9 y: M
; n+ A* B, l- B. y! D; k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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