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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:4 Y# f- m+ V5 Y8 B! T5 u
to do-business
7 Z& e  J# x  n; y rt random 360! k# h4 t; e) |2 y" |3 H2 M
fd 1
2 _5 E  W. r4 X1 o ifelse(other turtles-here != nobody)[
( A4 U) ^3 ]4 p* [   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.5 O+ k+ E2 O$ w3 J1 ]+ u6 N! S
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      q0 D& w0 e0 \% D# b7 }7 V8 `
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 K  |3 q9 c0 d& {% m
   set [trade-record-one-len] of self length [trade-record-one] of self
$ G8 X% {+ H& {9 i/ l! V: T   set trade-record-current( list (timer) (random money-upper-limit))  m" g  c9 `  x( Y

! ^+ W* T; v: a3 x; e问题的提示如下:4 x1 e, P: p: K  z- }

! Y, ^' Q1 W  D% I: l$ y$ uerror while turtle 50 running OF in procedure DO-BUSINESS
# g' e1 L7 M6 `  called by procedure GO
+ A5 e% g( f# Z  Y( zOF expected input to be a turtle agentset or turtle but got NOBODY instead.
) q' V) T2 F! e
(halted running of go)6 u5 B0 O$ Y3 ]# z& E4 \

3 [. o& \0 X: [# W+ W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~~
9 G; I; @% X4 L1 Q3 Y( D: ?. X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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参与人数 1仿真币 +30 +2 收起 理由
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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) c; p0 |1 f% W5 o: O3 j# a
globals[
" B! g+ `$ S9 R/ j* ]xmax
1 `; p7 S/ Q3 {% U  B0 O2 M2 ]8 bymax% [3 m, m+ k8 K% \* H5 Y* Y3 r
global-reputation-list
1 a3 K, h( r/ F, W8 K" M
2 W/ i0 W% S# T( o  u+ o/ Q1 c;;
每一个turtle的全局声誉都存在此LIST( w, f3 s. i! V% i4 {( p  b* u
credibility-list
/ v4 S8 ^9 @* {4 P5 |8 H;;
每一个turtle的评价可信度
8 w8 N+ \5 w, f4 Vhonest-service1 R( H# r1 ~$ T" D* h
unhonest-service
7 v5 c/ Q, }& a. Loscillation
$ A2 f; @6 [: Q# j- f0 G, lrand-dynamic
+ V/ T$ u4 W) x0 F]
. I% p. S! ^$ H1 D2 w: H% z% c" S' w5 N8 H# u+ w: n
turtles-own[& p% H1 v* D) o7 z
trade-record-all
/ e, o6 g, R5 [. b! y: \- @;;a list of lists,
trade-record-one组成5 k5 ^6 n& h' j0 h9 E
trade-record-one
( P6 E$ J6 j/ {: M;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) n. F5 b! m  `7 G( p$ v( ?( m9 Q2 O7 T+ ]& _) ~7 d$ S: @) n
;;[
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]]$ y, ~! q$ M0 t6 ]/ h+ i( I
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]
8 T7 k; Z, Y+ o! e) Wcredibility-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
8 S, }$ d- F: B! J1 _5 Z$ I  Oneighbor-total" b- z. q6 L) o7 w! Q
;;
记录该turtle的邻居节点的数目
' i. q& K8 L* M& G* l" F. a1 ftrade-time' B% C* o8 }2 u3 y* F$ f1 ]0 h& Y
;;
当前发生交易的turtle的交易时间. R8 G5 H) I, Y/ Q" C: C
appraise-give" Q. ^2 H; Q- ?* I+ ^7 H- Q
;;
当前发生交易时给出的评价$ C( g* [5 e2 b/ u! _, L, Y8 ?
appraise-receive
; H) s* g1 [7 Q. {6 M/ ^;;
当前发生交易时收到的评价1 `, H* B+ ~9 x
appraise-time
) A; `; r% e9 p. B# s;;
当前发生交易时的评价时间
8 q3 t% P3 O$ [' o+ {! Ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉: e( R3 g) D9 X: z4 g1 K, i
trade-times-total
5 Z2 H* i  s6 `& `# r5 T;;
与当前turtle的交易总次数
  `. A9 e0 p+ B+ l+ ?6 Utrade-money-total- }- \& j- T5 D& v
;;
与当前turtle的交易总金额
0 ?7 B7 Y6 Q  D+ D8 ]" q; c: [local-reputation- n$ A- m& T) ]8 W: T/ C0 A: r! V
global-reputation
% z6 X, |2 b1 Mcredibility( U7 O3 H+ K) H- ^& x) n  K
;;
评价可信度,每次交易后都需要更新
2 E4 L1 C. J; \5 X0 b% Vcredibility-all
2 Q/ j5 X: ~7 [  C& d4 b;;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
: o9 R. t$ H, c' P
6 x$ k. u7 {& d1 @. Y$ c;;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
* H7 R2 e2 s$ ^& acredibility-one
6 Y* J% P4 F, V' c" H;;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people5 {0 k: O$ c2 ^2 [: t" q6 m% d8 B
global-proportion5 {$ o# V1 i; L* U
customer& x6 A& c9 b6 ^' s2 g# }. Y
customer-no
& A& X3 [# W( M5 l+ W8 otrust-ok5 _! i' ^8 F1 n" P! h0 X
trade-record-one-len;;trade-record-one的长度; d3 I* `  Z. \( `, w
]: d' n  @& i2 k4 D* N, w1 M# |
. o4 E, H6 W6 g
;;setup procedure4 G* w3 d$ D4 q+ h3 S
" }$ a/ J% X0 X% V1 ?* ^1 ~! s& X+ @
to setup
) Q4 k9 V5 ?% \$ H* d) k) X( v& M! d- e7 a, f, J
ca

5 j5 s$ x7 U  d/ b2 Z9 o  ]1 K7 I, o! u: }
initialize-settings
7 c9 V7 o% L+ k& P$ i1 _) A1 ~
. c- M. H. t" G* y- X
crt people [setup-turtles]

% a! }% ~- n% Z' d$ q9 g! V( W6 s* }( ]
reset-timer
4 |2 j5 Q1 z7 v$ n7 E! F
. |4 C8 u3 a% O, o; |
poll-class
0 @3 W6 _; g4 J: T1 Z% q

% j1 v% v; k. usetup-plots
/ _% P0 O/ ], J0 y: ^) u" {

7 l  M; N3 }# {/ Kdo-plots

7 ?& r3 [8 i; t. ~- D7 Y  tend
- t- i: u  M" k! R* x/ i, r9 P+ h  N; h* W
to initialize-settings5 T, v: }8 t2 m% m! E

8 _2 s9 U% T! W  n1 V0 yset global-reputation-list []
6 A. |6 \+ G0 o
; l+ K+ U4 d$ h/ V& W0 _1 G
set credibility-list n-values people [0.5]

  A2 k, v& l4 N3 B; P" [5 L7 q6 `! {
set honest-service 0
5 Q) l" K4 @- c& R( K! G
$ v& O) i) b, g6 s
set unhonest-service 0
; ?/ b5 [2 e( y* Y

& a% {$ v  C5 r$ Xset oscillation 0

0 ~' d. b, C3 j0 j$ I
6 ?- U/ ^0 H6 iset rand-dynamic 0
) A4 P3 ^+ d7 K4 |0 }3 B  \
end% x/ a7 h# m( u4 L
, [4 I; u8 `9 ^2 `& O6 |+ u  T
to setup-turtles
8 T# [. n) A1 mset shape "person"& a5 Z# U; }5 }8 h; i% `2 `8 I
setxy random-xcor random-ycor" N* _. ^7 _) V! ]6 S
set trade-record-one []
  s$ M/ W2 }. q( Q: e3 b4 C

: K1 N# l6 O4 K% Yset trade-record-all n-values people [(list (? + 1) 0 0)] * s7 X1 }& R, l8 b  S3 u/ Q+ Q) H

7 L/ o4 H0 b# ^set trade-record-current []! h5 ^+ ~% V% A
set credibility-receive []' o3 _: R! [- Z- f5 G
set local-reputation 0.5% p( E, F+ Y1 w3 l0 J, {
set neighbor-total 0
7 y! ?/ Z* {0 J: t1 B# aset trade-times-total 02 V9 I- F- T! A; @) z8 ?2 }
set trade-money-total 03 G% Q3 i' a3 z& \5 @
set customer nobody
! n, K1 _+ O) g( Oset credibility-all n-values people [creat-credibility]/ r4 ]9 O  b$ [" k4 m) ]' ?
set credibility n-values people [-1]  S1 G* ~/ F5 d
get-color
9 P0 }/ J2 A4 p
0 x; x) g/ f1 R# I) i
end
2 L* |/ b9 u* J( |5 n2 [% e. F4 Z; y. X3 E
to-report creat-credibility1 G0 V: Q9 w8 Y6 D% Z
report n-values people [0.5]
1 e8 ?* n' T9 J/ c+ P2 Zend
5 ?& k9 ^" M+ c* L' g, k7 K+ K3 I
% Z; [+ h" y* m; \; i4 }to setup-plots
5 d& t$ q4 E5 n! l5 l9 ^& K/ m5 C( c# [+ c% {
set xmax 30
! r1 w9 r! T, e9 f( |+ r$ E; }( C
# J* x5 r% n2 L
set ymax 1.0
/ M# t7 g% n, W$ B. G4 F

6 d( `6 e7 L$ j' _5 X" J2 |- Bclear-all-plots
. F1 f* N  T: W3 F

9 P8 O+ |- q4 b, O0 ^6 c3 m" asetup-plot1

- z$ ]# V$ M+ h9 h& q; P$ |6 X# `4 I; Q9 x, t5 ?4 U8 ]
setup-plot2
: J; d9 a( e- p

/ O3 c2 ?7 C, r8 G0 j) dsetup-plot3
% U( \9 F9 o2 O. ]  |5 B/ M2 v( s
end, A9 H5 f5 A+ F
+ v2 _2 k; C: K2 H! l, r' I! l
;;run time procedures
5 p5 S7 l+ L0 O& {3 N, g- t% a' {# Q: G0 U7 n$ c9 k3 ^8 X4 `9 |4 I
to go
  t% ]" x/ @- }, f3 K  X' U
. f) o" I0 ~# ~7 Nask turtles [do-business]
/ P6 }4 [, n9 Z; E  E( b+ Z
end
- k$ E3 F# a: D$ `' e/ C6 U4 v% t: {8 p! e! ]0 a5 o  i
to do-business 3 H2 h* _5 R# \! p/ s& M- l* Q

( m1 T  X" R0 L" H' ]* x- @8 X" X
: D0 y' t+ M. W8 @rt random 360
% y( b4 M1 \% j
% y5 C6 g6 \8 \  h3 l/ O; |
fd 1
9 c2 f. J7 d# ~
' j1 w2 l' f+ m  g/ J+ I8 [6 f  I$ w
ifelse(other turtles-here != nobody)[
0 B3 I7 `3 j4 v
1 H; N8 J2 I. D3 ?
set customer one-of other turtles-here

- B+ n( a) s3 Z: m% o6 G. Y' b0 \9 T
;; set [customer] of customer myself
, N% K1 U' V3 d7 p% w4 K- t

4 g# E3 K4 s$ b6 G$ C& @9 yset [trade-record-one] of self item (([who] of customer) - 1): W4 T  h8 c7 ^
[trade-record-all]of self  O7 L; n  a3 U9 Q) L  ?' Z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ s3 `2 f, @, X. `& b4 G8 B$ K
2 o2 V% i+ C' M$ \8 J9 X, Hset [trade-record-one] of customer item (([who] of self) - 1)
7 H1 \; V: V# ?[trade-record-all]of customer

+ i- ~- \- O2 h
( {5 m+ X4 d7 E* ^. o! rset [trade-record-one-len] of self length [trade-record-one] of self
7 j+ V% {8 m  l6 R1 Z2 r; l* p3 G
4 d5 L0 T3 M3 f$ E1 R7 [8 j
set trade-record-current( list (timer) (random money-upper-limit))
/ j$ `, k! y9 E; c
+ y  I' E" \" ~9 S
ask self [do-trust]0 N" h5 S9 |/ h, X! B& U; H6 S
;;
先求ij的信任度' J* _: {( Z5 }) `+ y: n* o8 D

& X8 v; u3 [' C* x8 l/ R5 ?$ M( Nif ([trust-ok] of self)
7 N3 b/ g2 t4 }; ];;
根据ij的信任度来决定是否与j进行交易[
! v9 _* ^" ]9 f+ m: `  jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  d4 |" Z% y3 g. }( J$ p
# G6 i4 |% o( R2 u4 p/ l[
& i3 H8 Q& \. Q. b2 _$ c3 j

: L+ T4 b; h0 s( V( Sdo-trade

) x! q8 _% Z, ^7 b2 W7 q+ ?5 P
update-credibility-ijl

1 g9 ?, Y" W5 d8 M8 j. m4 u
, g9 e* F# H' \2 k% H6 P6 Nupdate-credibility-list
6 }4 M- ~. m8 [/ X

$ v: U  P1 v8 C8 R# w% a
# x+ |% k% a6 b4 M" S! Hupdate-global-reputation-list
: z7 d3 v' Q0 Q2 P
  `- Q& V2 A: |; K
poll-class
* o+ R$ e4 w$ Z3 S
( p7 `. P* m' ]6 o  o, N; F0 r
get-color
% R8 K# P/ {. q  K

& {( U- t( x9 S( Q3 v  r, F]]
* R4 z7 {1 L) O6 t6 Z7 a5 h, c
# q) R; a/ i/ i# {" x;;
如果所得的信任度满足条件,则进行交易) B2 w0 w, A& F9 [$ s
3 y# t( k# S' H6 k" ?( t2 L' W- ?
[
! k" S- k5 ?. }% S: g$ ~
  b( r7 K# \& m) }  y$ Z
rt random 360

; a7 d  o# ?) m
) p$ `# R9 q! p* i. [% `fd 1
% a% [* k' A$ k- j$ _

0 R# s( b7 Q1 H& _8 k]
* W  U( I( v( Q5 e* ?- ]
; O2 T; v! T" o  H) E$ d# O. [
end
. r! ~( i  h' ~; m; _
/ D& S, {- R. r
to do-trust 3 z6 {, R) _4 {3 s
set trust-ok False$ o& ]+ O$ a1 V8 {* n- V7 }

5 k$ L* d# t' v
! T1 _- q2 N! ]" m+ ?! }
let max-trade-times 0
9 y: e5 p, [, R6 N. Xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 f0 D1 l$ Y1 A0 i- [
let max-trade-money 00 c5 S, m' R* }) O: Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' ~6 p, V+ Y5 c, n, {/ e& s, R6 C
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), v  Z. S5 G  c# e/ W" w, K6 q; c! C
. }, u) X* M; F* c( @9 Z4 F) B6 v0 f
. `, j6 C7 ^; c# |
get-global-proportion
; t# j$ }# D) X. B$ A5 L& _! Alet trust-value
" d" p! J1 E6 j5 d5 @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)
# w% |) @7 D4 i4 ?
if(trust-value > trade-trust-value)
! \- ]; F7 }2 d9 T1 N, E2 h1 g[set trust-ok true]9 ^- m1 d( w0 k2 r
end
4 v0 I6 u3 P# q( l1 `6 [5 {0 S/ E2 V1 @6 F* o' \' @
to get-global-proportion0 E: t  Z/ V6 K
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 o( x$ I( ~8 }. i, C0 t* X0 H[set global-proportion 0]
' i( @4 P: h: T[let i 0% T0 d# x. y3 ?" g6 p" N0 g
let sum-money 0
  w6 U6 v8 W7 S" f  N# ]while[ i < people]* h1 @8 M7 h+ Q+ S) e8 ^9 D, d
[
1 G) ^8 }2 W* h. x" hif( length (item i% p' L. A' k3 B
[trade-record-all] of customer) > 3 )
/ n0 A, l! L! m1 o) W$ I
[' R* g0 R. O0 z' x4 n
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 S5 A" G% ~" C. o
]4 x/ }) p+ t1 b6 o/ z
]
; a! t! O7 W* y! ylet j 0' w+ X$ H- e9 L
let note 0
( _6 p  I% H7 m) C, R8 Awhile[ j < people]
8 g% r7 O9 M: ~" y" l& i1 b4 T[
3 Q3 G$ I9 _( j$ z+ |2 f( ~9 {if( length (item i1 q: G' d" J4 Q& Q8 q9 Z
[trade-record-all] of customer) > 3 )
$ n, b# Q9 ~$ E* x
[
% {7 A3 y1 b7 F# T/ Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 a- l3 M* M; o! f[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# B& k- O$ T8 P7 {8 u[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& @8 h( J5 g5 l* _- j6 p
]
9 k6 k; J9 \  |6 `% k$ d]  S- O1 T* A7 X# K* J. f" u
set global-proportion note
- `$ L$ H9 U9 k! J' h7 U; t]& m4 m* F  Z, Y5 W$ t3 p( F0 j; r
end8 u" w" M* v8 x$ }1 G, K
  M, A$ T4 ?- S4 m2 V5 \9 c( o
to do-trade4 e1 E( X1 g) l* G* C  K; \
;;
这个过程实际上是给双方作出评价的过程
/ [1 n( @% e  A7 O) M7 ]: h+ t% Iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ ?& u' t& ]) i8 W( c0 M+ Y1 S/ oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ h2 H, g( ~5 |# W, V$ gset trade-record-current lput(timer) trade-record-current
* f% V1 i+ U3 v) `;;
评价时间2 p7 a' ]2 v8 i0 z) s& d, Z) C
ask myself [
/ l5 E$ E- W0 G! v9 oupdate-local-reputation
) {$ M( T3 |1 |. q. [" n6 Nset trade-record-current lput([local-reputation] of myself) trade-record-current
+ D  C3 i( n5 Q- x  ~) n/ n]
: j! F3 H2 e9 y- ^6 d% tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ o  h: q4 m- _# ?- {/ I;;
将此次交易的记录加入到trade-record-one
3 ~" h. h" G7 q5 D: \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 v: {, d4 L, V0 L( N8 X$ R% I  ulet note (item 2 trade-record-current )
8 V' ~! B% Q& n+ Mset trade-record-current
. V6 _5 |9 ?2 Y0 v# Q9 f, E$ c(replace-item 2 trade-record-current (item 3 trade-record-current))
7 e, i$ P' y3 M( W
set trade-record-current
3 q  v2 L9 a9 i9 ]5 b: q(replace-item 3 trade-record-current note)
& |) U9 O% M6 b+ b$ p) V$ _; d. \  p3 g  {- z
5 [$ a) T- p' V) o
ask customer [
. F$ D8 P0 z* ]+ D* z3 h0 d4 }update-local-reputation
2 `/ T$ [2 R$ @' Z. C- nset trade-record-current
- E0 p* H  R, u% D* {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# C# B6 B. o3 a0 w- I- A
]
& j4 a9 ?% Q. l/ q/ e* a' y
7 J0 y  Y0 N/ c  u1 W' F

7 L1 P- I& c/ Sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 T! a* q1 W& y& ^# K# s

3 B. E  J9 p$ g# Lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 c! {8 i; h1 ~0 a2 ]* C' K;;
将此次交易的记录加入到customertrade-record-all
0 G: O  v" K/ A" |: Nend
0 }" F' \( E* k  l. W  `, @; N0 [' W! f/ U- ^5 w
to update-local-reputation! b8 @! z, Z! L7 [( ?" p/ L) P
set [trade-record-one-len] of myself length [trade-record-one] of myself
) f' e0 I" a! J) h, w
6 s; J/ h8 A. s( q- x9 N0 z: F) a* h1 M9 O) s0 L& M8 Q8 L) J
;;if [trade-record-one-len] of myself > 3

$ \! I5 ?) B8 U4 D. d. `update-neighbor-total
3 ]( Z: W& U$ g! {;;
更新邻居节点的数目,在此进行
5 i! Y4 Y5 w7 ~; mlet i 3
7 R5 V: o" O0 d/ G9 M7 Qlet sum-time 0
% w; X( f$ b3 P4 b4 rwhile[i < [trade-record-one-len] of myself]
: E( A; h; f: h0 p+ j[
+ e3 z  r" Z$ X' i& }$ o! |set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" H0 C; r; Z3 B5 l5 [2 C' K5 |
set i4 `# c: O( v9 Y+ y/ f
( i + 1)

5 R& ^6 o7 B# d, k]
# j  W7 h1 O) i0 Y/ }9 blet j 3) y$ ~/ s7 V# I1 |
let sum-money 0
7 o, T. `% c+ `' N- R! h0 G0 Owhile[j < [trade-record-one-len] of myself]
% A/ R0 W. b! G8 U& k[
& [0 l% d. Q' L# K  Uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)! y9 t" n$ N# B! f. H+ M
set j& e, ?3 ^$ l; p" r6 p
( j + 1)
5 H8 d! l8 m, m
]( t5 U2 R7 G& L
let k 3
% U. ]! {6 S6 S6 |let power 0: a! ~  k4 O6 f  S+ Y6 k  {( b# D: u
let local 0
. S( m3 v: a2 o# \while [k <[trade-record-one-len] of myself]
! {& \! v1 H% ?  c& a6 \[
$ v7 _, a1 g  e' i$ M  \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) 5 u, e, K+ V1 {# u
set k (k + 1)
5 B# L, x# W# {; y3 }5 ]$ P]
+ @  E% z* r& }, Wset [local-reputation] of myself (local)
5 S; ]) h( {; [) \3 W, Pend
; e( s+ p: m: v" J) V" ^; j& H! \; U% E% t, R" ]! _7 J& j
to update-neighbor-total+ F& r( ^+ I3 A

* S- R3 I. r# P% S3 b/ y( h/ bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 Q- l8 M* m, d0 b7 a9 G- F. `. ?
# ]7 l5 O2 v# T3 f3 H& [5 I8 D! J4 t

1 w+ c; N& `! f1 E' Hend
: Q7 _3 r9 J! U4 L& a; P$ S* M& l% i2 [+ y
to update-credibility-ijl
6 C9 i5 t4 p. t) @- B
  f  W, `4 K4 x/ b1 p0 J. _;;
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。
9 x  j0 ~8 M+ C! Xlet l 0. H% U& }- s6 |4 o+ C5 d; E
while[ l < people ]; F" s! u+ u& c+ b0 G) b6 O) E  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
% h% W" a% M9 q% o% ~[
. z( {2 N. z' g5 e# Qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)' K1 O$ C. m6 q' R
if (trade-record-one-j-l-len > 3)
. \9 ~8 j; m+ X8 N8 X[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-one7 }+ `( Q( Z. N3 u# q6 v
let i 31 s- ^) L7 ]( q4 X5 Z' L/ q$ n
let sum-time 0
% d2 p# y8 \" f) Jwhile[i < trade-record-one-len]3 C! n* `. ]* ^  y
[
  N! Q$ I8 Z2 H! e( F, fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ U( \+ o2 ^# P& S' Xset i7 T7 F! h" X! D' S1 R" G% U
( i + 1)

, s- h. M5 ^2 c4 n& i3 \]
1 s6 b/ e; U* E% l! K9 R7 Flet credibility-i-j-l 04 Y! @& Q6 M$ E
;;i
评价(jjl的评价)2 R  q3 R, R& o. I* g1 `1 u
let j 3
! q" y2 b# A  ?, @let k 48 P9 T" W; C' |  D# t) @
while[j < trade-record-one-len]
& d, s1 j2 `, a4 @) ~[
  t! r' a" f& p( _5 {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
  B& r2 z! ~" h9 n4 ~% A) F$ N4 M2 hset 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: u) Z" C; ~  ^+ F" F$ H) R5 [' Vset j6 J# V7 b9 O, u4 d4 m/ w+ J
( j + 1)
3 C; C8 o7 C8 F! J( \, x' p
]0 A7 i0 e+ w$ _" r% a
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 ))
0 t; O; P( F8 N( m3 |0 M
: q' |( [' o$ K/ S0 D

: l- w# k, g' alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, z+ z. m* l% c7 A;;
及时更新il的评价质量的评价
& o# ?. W# \) K8 d, _7 v  c; Nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ ?8 W1 l6 J3 Q2 o, O. z
set l (l + 1)
4 {5 o9 G9 }  h. Q" G# D$ i]
; q  L5 `# z* Kend1 y  z* q, S; L/ d- s; k7 b# @! z* |
2 \7 }/ J( U6 i7 h: a0 N, _
to update-credibility-list" i1 c! y3 D8 s* c9 L$ C. H
let i 0
5 k3 u7 D' N& swhile[i < people]
, T' l( x. A1 c1 s* p% `. R0 a" p[
, E8 N: J( `2 n' Hlet j 00 x5 S7 u. X9 L: o% |
let note 0
2 n% e/ A8 b' x1 t+ elet k 0
* k8 [3 B' N( b3 P" `$ U' B9 S+ q;;
计作出过评价的邻居节点的数目* s7 A' |3 q2 ?, m: a2 u( z# ]0 A
while[j < people]# c( L* @! B! B0 Z. X, g5 d1 C
[! h) y+ U! t7 o! M
if (item j( [credibility] of turtle (i + 1)) != -1)
! t! u5 I% a2 h. s0 o& m0 ^;;
判断是否给本turtle的评价质量做出过评价的节点
9 [, ~& x5 x  b, Y[set note (note + item j ([credibility]of turtle (i + 1)))9 D0 H$ N7 M2 x5 b3 ]4 d
;;*(exp (-(people - 2)))/(people - 2))]

# O& L6 \2 P# m7 e7 O2 I* L2 qset k (k + 1)
8 H+ C9 X/ I, D9 y& G7 @7 J4 Q+ d]
* x! \) {! d+ O- Jset j (j + 1)
* r3 g* d# {' {8 T/ v$ L+ @9 C2 W]
3 i/ p& L, n3 D# M" T0 Nset note (note *(exp (- (1 / k)))/ k)5 p" n( [1 z0 o
set credibility-list (replace-item i credibility-list note)
5 V- ^) _6 q, }5 qset i (i + 1), I$ I' r/ l2 e0 g2 e* D. a
]
: E* z7 \  P+ @; F9 Tend
0 u; s) Y" H( G3 A" a9 f: ~8 U* U
9 f8 n' w4 l  H2 sto update-global-reputation-list
! Q3 u- l9 B' g8 dlet j 0- q! H$ F0 `  V$ Y
while[j < people]
& a6 |9 m: |) n' m[3 h& @; K8 ]  \. j
let new 0
8 c; f! @, x8 `2 M) p: k3 |;;
暂存新的一个全局声誉# n# Z/ v% [; O  H
let i 0
' J- M- u5 ~0 R; G  ylet sum-money 0
! u- ^6 a; \( F8 Vlet credibility-money 0- w" ?; L. l0 G3 J$ l- B$ G
while [i < people]  p" {! ~7 I$ \5 s0 Q9 C
[
$ ~) P# l% ^. E# Jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- _  F$ |/ d5 }1 u, Dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 U0 T' p, X! r* L  Z3 U
set i (i + 1)+ W. ]$ Y. b# u8 i4 c
]% B" F1 M' T1 Y/ m$ c# Z2 H
let k 0' L. o3 n" ]7 @' ~& U" u
let new1 0
7 V4 ^" B% {$ ywhile [k < people]
7 c5 q  N$ c: l7 y- v* r& Q[
0 r5 e; n6 |- p& Vset 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)* s, u  b7 G1 Q. k0 N
set k (k + 1)
, e" H% C2 b( r- Q8 ?* U; E]: t3 |" ^$ l# G' N5 r; e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * C# U  `9 O4 G5 b' W1 V6 R
set global-reputation-list (replace-item j global-reputation-list new)% Q4 H! J) r$ `" _5 v, Q  j
set j (j + 1)6 ?: N" M9 u2 g* Q8 B& H! i% g
]: m9 C" p, I9 \$ X! `5 F! }
end) {6 A+ f# Z7 r( W

) z/ [4 u2 q8 C+ A% |' Y' \. u- K% `
1 F, \" b9 y. z3 L, D/ y$ i! F
to get-color" N( K/ l6 Y' e& o0 L% W

8 v  u( X7 f! X( kset color blue
- {) k: j7 l0 |  t5 z
end
! @0 ?' N1 v# @, j! ]- \* N2 y: a# ^+ L: [( D& @# v# J7 T! j  x
to poll-class
. E7 ^7 a- \# T9 ~end
4 e8 E3 B1 z; d+ l: w% |' l- c
3 O  {9 N+ r7 _* i0 h& Nto setup-plot1
4 I9 c" e3 C. G6 [' t6 ?6 L6 P/ C, n) E8 ?
set-current-plot "Trends-of-Local-reputation"
7 T1 B& ]6 C2 [+ w' o
  V8 k1 R% M1 C- U( B8 M- Q! m
set-plot-x-range 0 xmax
& }( P: c2 J% h; p
7 C* i$ _* {' Z! n9 G
set-plot-y-range 0.0 ymax

3 N+ k" O! O" F- o, T7 g- oend0 l) X% _) `- U# @% R
$ j1 z7 T7 B+ \/ r9 _
to setup-plot2- ]8 E8 T7 D( l

+ A( h: \8 Z# L+ w! R; p0 P. X, q( Qset-current-plot "Trends-of-global-reputation"
4 ^! r1 A: X1 K

- ?% G' @7 f4 V. r8 L8 L, y2 o4 pset-plot-x-range 0 xmax
9 A) ?" c4 }* d6 \2 m5 L
- D8 L8 j9 a# P* Z" @: h; e8 D
set-plot-y-range 0.0 ymax

% v$ v+ @7 k- ?( i+ Rend7 f) u( N) l& f5 B3 L
; h6 O0 W9 q" o" N) t3 \7 e
to setup-plot3
+ w% c4 P+ h  p: [7 D8 y: u6 x
" o* S8 q/ q# e. pset-current-plot "Trends-of-credibility"
! E2 q* H. t3 f+ {4 \7 D7 `. T$ s

& w/ n: v( X0 @; u! yset-plot-x-range 0 xmax
  a$ A9 O% E! g) p+ Q( E
2 Q4 y% }8 Q$ _
set-plot-y-range 0.0 ymax
+ B: n0 j* p2 `! P9 {& n4 p; W
end
: Z  Q/ ?/ e% h) F. X
- r7 u( {6 j0 W. m' uto do-plots) |" k2 p: @* u8 g0 |) h
set-current-plot "Trends-of-Local-reputation"
0 s- D3 ]% g' N) tset-current-plot-pen "Honest service"+ t4 x7 w0 Y5 s1 `7 j
end
; `. l  u. ?2 P" {. n9 V/ L/ O3 w" d- \$ M4 ]. a
[ 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.- ?8 `: W0 W7 R* G) [( u
7 K2 h' C3 }; Q8 y( V1 o
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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