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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:. ?/ M# \3 ]2 W$ z' r" u+ L
to do-business 1 T( c: y% H# m5 O
rt random 360
# M* ~9 Q. K) w: n# S fd 1
- m3 P! f9 W3 r ifelse(other turtles-here != nobody)[$ X  l: y$ l: k6 \% d( \- m2 g
   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.
2 N+ p1 f; `, `% g   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; S4 _4 H8 L# N5 |7 ]5 T
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ G3 X( F/ v  a! r6 i0 v% `
   set [trade-record-one-len] of self length [trade-record-one] of self: i5 o% G- M# q6 d2 J
   set trade-record-current( list (timer) (random money-upper-limit))3 ~" k% T% }% r) W" h" E4 C+ p4 l6 ?
7 ?" f3 I/ {0 s) f- F4 B1 h
问题的提示如下:
+ z5 _! U* v; S% g1 r; o
! E* r8 F9 [3 J! L/ R  Herror while turtle 50 running OF in procedure DO-BUSINESS
  j+ j7 q* c. H" K) ~5 j0 J" o# |* ]  called by procedure GO
( Z9 j# k4 x& ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.1 h5 W5 Q1 }' a  V! v" J: u
(halted running of go)! `& z: C2 ~. t# T5 x5 u+ U7 m0 d
1 p7 D" h; l5 ~! Z0 F
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~~. {6 @+ P- n, G' ^) R, Z" 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
. d; o/ S9 U) J" k2 c0 e* Jglobals[5 P0 W- i$ g' |, _
xmax  l# c, i+ U& C
ymax
- `4 s5 m1 }0 Jglobal-reputation-list; @, S( A* g: H5 z

. r; ^2 M6 d0 V& Y' R' G. p;;
每一个turtle的全局声誉都存在此LIST
" X( x! c  j% N- O* ocredibility-list: A& D$ v: R4 B0 N
;;
每一个turtle的评价可信度5 i; b2 `& J8 r/ V8 B3 F
honest-service$ p% i1 p, T5 @* I" u: j; j" y
unhonest-service
! J7 }, o, ?5 K# voscillation! S! w7 _: p0 E; Y5 A8 w
rand-dynamic& k: e$ t. ^- L' X: w
]
. f( Q- o( `3 R7 @- S# K* u
* h% h! A7 r/ O$ @8 \/ Yturtles-own[
- ^- U- t: l! ttrade-record-all: p1 X3 I* r# X5 C
;;a list of lists,
trade-record-one组成
6 h/ a+ i( T5 Ktrade-record-one/ u) i- E0 X6 n/ f4 K6 K' D, b$ `
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 K! [1 K4 G* e* r. i
# g9 C; N: ]- X;;[
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]]
) c: I) K9 _) h" r) `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]5 Z7 t# Q  n$ A3 K4 [2 G
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
7 @  ~4 s5 X  |1 s& Y# mneighbor-total
! m/ K  z- J  n& w# V" i;;
记录该turtle的邻居节点的数目
3 b( P: ]* D/ j0 A! Strade-time
4 \8 a+ @( ?( x5 d;;
当前发生交易的turtle的交易时间) l2 Q. Y; a. S1 b0 h4 I
appraise-give' m; j; o' F9 {& {7 Y! k
;;
当前发生交易时给出的评价
, F; d  P( h( u, zappraise-receive
( n8 ]3 q9 p8 S, w;;
当前发生交易时收到的评价
7 F' w) S# d2 cappraise-time
2 {$ n- l1 S6 S2 j. `9 j;;
当前发生交易时的评价时间; x; |9 z5 Z$ z5 D7 e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉  X1 w$ X$ ]: e: g# S2 p- i3 D
trade-times-total
1 u9 z0 m( N0 l;;
与当前turtle的交易总次数; h0 e; {: W4 y% y$ a
trade-money-total+ _% s! q: v" ]' n9 K$ |
;;
与当前turtle的交易总金额7 u: h8 O0 Z0 |
local-reputation
4 X& ?. y2 `( _* Tglobal-reputation
) S& H, F5 e7 m; J0 A: h# acredibility
$ _  g9 y) e  g) \0 ], ^5 }! Z  o;;
评价可信度,每次交易后都需要更新
) l, W" }( y# T, n* D# ^credibility-all! G9 x6 h# T- p; |  y# _) m  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+ N( \# ~( Y1 [2 e- W
, X1 }, N* t7 l" l2 \7 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
, W2 l) z$ A# r. K4 rcredibility-one) n* L2 ^+ b: {! f
;;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
8 R$ c" r0 z1 I: tglobal-proportion+ o; D( s8 n* Y. u- `
customer8 d  W: _. F+ M9 S( {- S! Y
customer-no
3 @7 W0 K/ ~" @0 Rtrust-ok4 u, o) p# \( {6 w, l7 s4 f3 @
trade-record-one-len;;trade-record-one的长度
! P- ?( h) m! a; u( M7 B/ \]
! A% {& o3 J: g" f2 K) N
( n! ?$ l# k3 V. k8 x* O;;setup procedure
' L6 p" E) L6 t" z4 j* @7 h- g% Q
to setup
9 S0 i( K: @7 D/ _$ Y3 o: M5 i4 Q! R8 P+ d
ca

: K, l- T' D; I/ W; o6 Y
7 S% |8 r* \: i: Q8 b. ?initialize-settings

# j0 ]- b- \5 k( t- g1 A2 P2 j! n  p4 L, X
crt people [setup-turtles]

& J- g; v% u. v' G  l; }! z  X: N; {
reset-timer

( j7 F: Q" ^. A  f: g  U3 }0 ?; k2 G7 g  K# P5 g1 [* m
poll-class
/ }* X9 F4 Q, Y8 ?" a/ Q9 f# j

* W3 Y/ d1 i* M2 Z. p! [setup-plots

* ]9 }0 `  N  P/ A+ t* c8 W2 E2 }' {2 v/ c$ }9 e
do-plots
4 Y4 V: B# w% y/ ~
end
9 n/ |7 y. Z; N
+ a2 c( y' L3 }- [" s7 nto initialize-settings
9 }- e2 k7 P! i- q" a# f. P! }
6 T: ~0 F1 ~  ~set global-reputation-list []

6 `6 V1 {9 j. [( t0 R! g. T! \
- s4 G# {& d! v; ~" |: X$ ]set credibility-list n-values people [0.5]

; a, a8 n1 |4 q9 H- u4 j4 a+ i: W1 j1 K: X9 {3 o
set honest-service 0
3 }- x$ Q8 Y# U  v' i

3 _; b" |& T1 _( G) C0 Qset unhonest-service 0
: p: u1 S5 W+ |5 I% l0 q

  l0 F2 o1 V3 z6 Y0 {1 _; J4 l, hset oscillation 0

: D0 ~- V8 H! d7 P( a, {3 Z# e5 T3 i% U
set rand-dynamic 0
9 n) R% Q. m* B$ N  _) g
end
/ d+ Q7 I0 m, W: B# R6 P( E. y5 q$ y  P, z- l4 h/ d( Y+ l' f
to setup-turtles
5 Y8 J6 u" k# c3 O# pset shape "person"& s3 f) `  s0 r5 v- s3 O$ Q
setxy random-xcor random-ycor9 V9 Q* I9 S+ o& L; F/ [* `3 I
set trade-record-one []
3 s$ T+ P& x+ z+ K6 B1 A! I1 }. I" J
5 ~9 X0 K  Z; o! C) Q7 v& M
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 i, b4 q: c# s2 x
5 F) k( G- @" t
set trade-record-current []* k, c' K( f9 s3 [0 d5 l6 D( u0 t
set credibility-receive []% [( t3 u% e: ^. y4 N
set local-reputation 0.5
9 K4 i; @- A9 g& Y& B9 ^set neighbor-total 0/ B' b  }! W! |& D7 Z, v
set trade-times-total 03 H* \$ C9 p+ P6 t6 c$ ^* @
set trade-money-total 0
4 o$ l  y' Y7 Z( k" y' t( Mset customer nobody0 ?0 k4 P) ]' y! I% o
set credibility-all n-values people [creat-credibility]
/ w+ W% a4 }1 Yset credibility n-values people [-1]( B8 m( I: Q. `$ f7 O
get-color
, |* A: E' w4 ^, }/ F4 z! k

' `0 o0 y, z2 @* M( cend5 q# V0 y* T+ g3 [

$ r- s- }, w/ Z4 \to-report creat-credibility! V- M( s, m; q; ~
report n-values people [0.5]2 @2 N  F0 n/ [5 r& a) n7 X; @) c) U
end
$ o, f% k  H" g" o4 I: s
7 |9 ~  j/ }& n% V$ Z* ^9 [: Fto setup-plots
' j& U, s  G/ ~" k6 v2 x' Q" D. J' ^0 }1 U
set xmax 30
$ h' c" W6 `7 p
5 Y2 v- B1 U# W, m# _7 l  r( k
set ymax 1.0

5 o$ ~3 F, ^4 B/ `* d1 g6 B$ U6 Z2 o. ?' Y+ ]. r- F" k
clear-all-plots

' n, x4 F. {! }" U5 P, d% K( n0 a, _8 o/ V# K1 x- g0 T- b
setup-plot1

( i1 v1 |/ y/ \# o1 c. E2 T2 M2 [4 `7 V
setup-plot2

9 E% a- P% V8 R  `; w; V& N1 Z) t$ T7 F4 z, _# W/ w
setup-plot3

. y. [1 H. o' E, ~% ~$ Tend+ M# w7 n, F* m+ a/ @2 Q% E
+ B/ I3 U& s# Y6 i7 C
;;run time procedures
+ T! f' L, j4 R+ n2 B! F2 r2 G6 \2 L5 @- L& G: Q  Q! Q
to go
) h( l8 t7 x( i$ Y. {% G0 W4 o1 ?
8 c4 r8 f: S' n" Q' W$ A  Uask turtles [do-business]

. q  b) a+ b* I/ |, F# d6 I: Bend3 [( K3 g2 S3 g& M; R. R

5 q# x) m" \' E! Hto do-business 9 J3 \; w. |8 R% o) f( i. T
8 x( N& M7 I; M6 i8 h& T9 w8 [

% S, h) G$ `$ vrt random 360

4 {- r; H& k4 z3 N: [7 A$ q0 C4 j* {! r
fd 1

! {' _" U. c6 P" Q6 A  ]; r' w3 G. _* t
ifelse(other turtles-here != nobody)[

+ u! |8 ^% `. a
+ [5 C7 m0 d* \+ cset customer one-of other turtles-here
9 X% Q5 G4 B& r: G+ {
, ?, Z3 I3 K. b- X7 S
;; set [customer] of customer myself

$ R: F3 Z3 l0 o" w
" C8 v1 }# K. Y/ Dset [trade-record-one] of self item (([who] of customer) - 1)+ H# S$ ]4 N2 P2 t
[trade-record-all]of self
4 P. p9 y2 N* b! M: t  [8 [3 e- ?* i6 p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. `/ O& e, D$ W' d  R, q( U7 r# i4 p& H( b8 @
set [trade-record-one] of customer item (([who] of self) - 1)
' O9 ]* g9 ^* B" b/ p[trade-record-all]of customer

$ X# p# L3 `- r" X
/ |" D( J/ K% U" |, E6 ^) z* bset [trade-record-one-len] of self length [trade-record-one] of self
, P6 T- Z: ^7 F8 V' M. {3 q
3 \, D6 d, [% V3 G, K$ O4 O
set trade-record-current( list (timer) (random money-upper-limit))

- Z* ^) `9 S. ^* y3 ]: r" G, D3 W7 F, q, }( {- M# i
ask self [do-trust]
' T  {) p: w2 Z/ r( U1 u" U4 e;;
先求ij的信任度
2 D4 `9 T, o1 @- `/ M& I; o
1 U4 }3 ?, L. v8 D& ^, {* m  Uif ([trust-ok] of self)1 q, v: j1 W9 F
;;
根据ij的信任度来决定是否与j进行交易[
3 S( R. X6 d* a3 G6 Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; v* F+ [9 w" o% c; q+ K! E0 S% w' S5 F$ I/ o  {
[
  ^9 i( F% f% ^

/ T& C% k0 @4 |6 n7 bdo-trade

- Y! W, E2 G! X- C$ Y( U- C& @! o+ @0 S( B
update-credibility-ijl
; @# r% [8 {! I0 y/ v1 k% h% D, S

: q1 i, p$ o# I) L- _6 D7 }9 @update-credibility-list: V) b5 Q  J5 X, ^4 A0 S
2 e) b  C- ]* L& T2 D6 \6 H+ R
7 J# D( [; p+ i) U0 B8 w
update-global-reputation-list
6 v/ u% d3 p' F2 v7 o: E4 O% x# O
( i- x+ U# |& r- k0 U
poll-class

8 j. D' z1 S/ W! h4 `7 ]5 a2 z* w% K$ H# c, p; c9 M
get-color
# L8 J; {& V5 ]! C) Z) r

; t; B' b* h: ~) t$ v]]; |( h) ?& K2 P* i+ n3 V% }, P1 S8 b

, N& D& }5 r/ @) p;;
如果所得的信任度满足条件,则进行交易
. l8 G. _/ T) Z# g' r: ^. x
  F7 ~& q& U1 R[
3 F8 W% R* D2 ]+ E

5 R) R5 O! }' Ort random 360

9 a/ g+ }6 S& }
) ]4 v9 }3 r5 H9 P5 O9 Vfd 1

7 W  X( U2 F- Y1 T4 D  Y" ]- Z: {' f1 q  y" m
]

# {% U% I# N! o4 }. @. T/ N* h/ F
* x# A4 f$ h6 C; X& tend
0 \  Y" Z' n5 V5 T1 F

' |; `" h1 z. d# l- {, }  uto do-trust
0 L/ E- ?9 B  C3 c; J1 H* iset trust-ok False' d; f4 L5 m  |* G

# {2 j7 O$ ], M2 g5 `' Z

) m1 z  K' }8 I) s: S; tlet max-trade-times 0' t& T8 f- z- `# T) ]
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 D1 ~+ A" J& n0 z8 S/ Q) @
let max-trade-money 09 {; I8 I  \2 y: D/ f5 h9 F
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# G& U: Y  r, e4 X1 C, p
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 D+ n* o- }# c4 w7 w, l; u; Z+ B

+ n7 a* d2 {5 F/ ~" o

* _3 e, H+ L  ~1 Pget-global-proportion, q3 j; s1 O4 i$ c
let trust-value
; i/ ^% ~/ P' n, i- T! s& Clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
  x! M6 Z$ _2 n% x
if(trust-value > trade-trust-value)
6 j0 [: M* ]0 F3 A# }[set trust-ok true]
0 e3 k8 M  ]! [; S/ a1 q0 l2 A9 Nend2 W# R5 z& c+ T" Z) {7 r

1 r( R% X  m! f1 S! gto get-global-proportion
! Q# y: ?" A- Y% Y4 Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 P) k2 l' `, m0 `: @) L
[set global-proportion 0]
$ ?' o8 p/ E: b8 r7 P- H% v[let i 0
& j! j0 R( |8 h4 ]( |$ V0 S% Glet sum-money 0) p1 {* s3 t  R: e; e4 y9 B, ^* a
while[ i < people]7 F2 t6 r3 V& }
[
  T  b) Q5 w& D: w/ J/ L# k, Zif( length (item i" z8 ?% l- u, m: Z0 m+ z
[trade-record-all] of customer) > 3 )

: e! D" c. `* z- ?1 _4 d) l# w+ U[! P% l4 t8 ]1 L8 }' T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 s2 K& _* P- {0 W. `]
. V+ S2 {5 D2 C' K0 N2 \( x]( X. n( r6 f+ |- e6 V
let j 0
# N' W3 |# Y  {let note 0
# Y3 c2 q- z, R% x$ ?" c& ?2 a3 Dwhile[ j < people]
& ?: d2 v9 _+ E4 W- m2 F[$ V( }9 n9 q# W% s1 u8 I7 G7 _
if( length (item i
$ _$ \: A4 N+ P& R% K) |; ~[trade-record-all] of customer) > 3 )
( p' [& o& Z! c+ Y' W8 M9 F! P
[
( f" Y$ _$ f9 M& A* uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) G/ D9 h7 w% s* L8 l! w  F" l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* ~+ @8 L. x  x  A2 J, |7 V/ f% S# [
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 x+ S, w% D, K" x2 p/ D
]. g, D2 d6 @, A' M
]
8 n6 ]" _. |# D( v8 N; tset global-proportion note: x1 U2 k& P& G, n  ^% z
]
$ y: z! v# E8 U7 ~+ mend
, B6 G8 P" S6 F, n1 \/ ~% |) I7 y( G% `1 y" n
to do-trade; W2 Q! c+ O# W7 Q# z
;;
这个过程实际上是给双方作出评价的过程
1 g9 q  `9 L0 a, |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: Y0 p- q; L4 U% Y' }& F/ Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- n  N/ |( ]: eset trade-record-current lput(timer) trade-record-current% J3 J6 ~( n/ i3 n1 g4 Q
;;
评价时间4 L& V( ]1 j! p' D7 b/ X& y, K
ask myself [5 A+ n  e; D8 Z' q/ P/ O. i8 z
update-local-reputation
$ q5 ], V8 j' M5 P3 _0 n5 ]5 gset trade-record-current lput([local-reputation] of myself) trade-record-current4 k5 n/ E/ V0 [
]
7 y+ t$ j+ c- R5 h/ `: h- h4 @set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 d. B3 y9 O+ K) n5 R
;;
将此次交易的记录加入到trade-record-one
$ X) a5 e$ a6 Y7 T+ b# L7 d1 r+ Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' E  ?. S$ R! U# p  r% l+ Dlet note (item 2 trade-record-current )
- u; H2 \- N7 |0 a: P; k4 e9 b# nset trade-record-current" j' w" b- J5 Y$ T  M# S
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 V9 v( p  p* D- G5 Q# @set trade-record-current$ \, ?; P6 }1 W# E! H$ I1 A" g, j& n
(replace-item 3 trade-record-current note)  s. l: H6 x5 e
, q- W4 ^' v& P

; {# @3 I* C/ M# \2 O; Dask customer [
- I* e0 |' X7 r2 u9 Qupdate-local-reputation; w, G! c( c5 A, }" {; p9 l+ g
set trade-record-current
$ n0 ?' O! X; Q+ Z: @1 J(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' G; r1 r# i. a/ A* E$ t9 S1 W
]4 F3 J* K2 j- z4 t( a) f

" p8 G6 }1 g; _, x
4 m4 w0 K3 d, _/ J  ?6 w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ f8 Z  u( I. k2 n" `  u
% t* e& R4 Q4 z2 Z: X
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): s1 g) i- b5 u" E' ~2 v! B
;;
将此次交易的记录加入到customertrade-record-all% v4 }+ l+ d# `# ~
end
9 R9 ]1 r  `  X) ~. a+ f3 _2 H6 ^7 q/ M& `* [; O' q" p1 L
to update-local-reputation
, ?: O9 n7 z& Z( P" I# Vset [trade-record-one-len] of myself length [trade-record-one] of myself- z: K7 _1 ^/ [) S! Y

/ R3 T6 Y( q/ p8 S" E, s: [( m7 d  Z& g0 I4 V$ F$ d0 s; S
;;if [trade-record-one-len] of myself > 3

! @. X& [9 D6 q; u( {+ Pupdate-neighbor-total$ A0 o- v$ M( |  F7 Q: N1 _5 n
;;
更新邻居节点的数目,在此进行
( k2 f6 I9 M: A+ j/ F& a. N# S5 qlet i 3' N& Q7 e8 x: v6 M
let sum-time 0: O8 e% N( O1 ~' T, n
while[i < [trade-record-one-len] of myself]9 R0 T. o' B# R1 e& j/ k
[
4 f9 s* `0 q% x  u) h5 ^4 C' Xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  c9 w% n2 y2 \( Dset i! e6 A# M+ E, h% r7 m
( i + 1)
" [+ r# _( R3 l( j( w% A
]
! V$ v4 Z& a9 K& C4 [let j 3
5 s+ O/ R0 F: I& w7 o3 h! X; flet sum-money 0
0 A" h/ c. d5 Nwhile[j < [trade-record-one-len] of myself]3 h* S9 ?* n) S7 o3 b
[. u' X1 _7 L) V9 ^
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)
8 {1 i/ r# R. X5 [set j
& x5 s6 {& @0 W2 e. S( j + 1)
8 z! ?* Q. a7 J; F
]
: Y4 W0 @9 R# v2 z9 O' D$ nlet k 3
' h2 z; u* c- t- q1 E  Elet power 06 p: c) B( s/ B% h# U+ e
let local 0) o$ t5 Y, Y% \! t" r
while [k <[trade-record-one-len] of myself]1 ?1 q/ m1 C# T
[- s/ a( o* C' R% ]5 z) }
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 W. e, p* e: B( `: }" d* g
set k (k + 1)
: p: {' f* _+ N]
" ?$ `* ^& W1 b3 y3 I$ Zset [local-reputation] of myself (local)
0 B! w" |; `# j8 k3 z5 N- E7 m/ eend4 x7 W; p8 w9 s5 S# u/ Y
7 b  L; X# U8 M: V' E8 l$ K
to update-neighbor-total
& l* B, G' ]! x6 N' P
# y8 E$ R( `- {$ Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 c, j" }+ L5 A$ u( }
! s6 g9 n6 A: \- ~

  P( U' W" L6 N6 q& k5 V, E5 V& eend$ n' n9 L; j% C
) P, n2 J: H) A
to update-credibility-ijl
, q  R: H' E) l+ c% |9 _! L* Y
. e5 C# x3 ^" \) u$ I, c4 k4 P5 }$ o;;
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。. J2 i4 q" _- T" h% M  P
let l 0- y( Q6 o2 U2 C8 c$ D
while[ l < people ]
& f# z4 H7 d6 _8 B$ K  F;;
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0 d! o7 z4 D: L& ?6 O( E
[$ l. K7 u- E9 W" Y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ ]% P; a6 @0 b* _# E* ^if (trade-record-one-j-l-len > 3)
' Y% B0 R/ k; H. [* ~" v, ][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
) g) B+ D8 q* u: R9 B) olet i 3
, Y+ v% S& P+ B  }& Alet sum-time 0
- b* U; K0 b$ c! _9 I  |3 Hwhile[i < trade-record-one-len]2 T. W2 t% u  o+ j% V  I) [
[
0 P' J9 C9 R$ ~' x' f/ qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 m( R. _; v. f% h7 M& a
set i
! D6 ]7 P. i! D8 p- d/ Z( i + 1)

1 r* R7 H9 m: U* s5 {( Z6 r]7 ?2 B& ]1 Y0 b
let credibility-i-j-l 0* V8 K1 |$ c; r. L+ a* |
;;i
评价(jjl的评价)
6 c( Z! Q4 \4 [/ ?# E* S/ g1 V3 A2 Rlet j 3
8 c0 d) a- d7 W( F2 y. u4 Hlet k 41 t8 K/ I- Q) T
while[j < trade-record-one-len]! U  o: S9 L: f& V8 e
[' p9 e+ j( j8 V6 ]7 {3 ~: A
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
) W& V8 k# A4 h2 J# t/ n% ?& Y  Gset 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)
9 ^# y# I) [% `: dset j, N8 C" d" b5 _9 e' j3 a* s
( j + 1)

) w# j  |, J6 s( R4 _& ~& e]
  M1 M  x" z5 o1 a* I, O" `7 @; b; f1 [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 ))
/ H& t) }; n5 r+ A
0 d% Q* l4 ^, l/ z
- K/ v6 ]. a3 k5 ~
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  B9 L, a3 g4 \/ I  ]5 _
;;
及时更新il的评价质量的评价7 K" o% l9 A( V2 `. P( T0 c" ?0 u5 d/ _
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! f( A* ]0 H+ R' v$ R2 \+ c( p; g
set l (l + 1)
* V. k1 U- ?9 [  F5 W]+ k* I. _# L7 W& |
end; u% Z1 j( f" _% Y- k8 @
# l0 ^6 q5 ?1 @7 L9 S" G3 l: M
to update-credibility-list
( J/ k# f' `5 d) C7 p+ dlet i 0
3 z& Z( ?; i# H/ T* `. awhile[i < people]9 Z; n& \3 h9 a) H0 ?" Q
[
- w4 Z5 j* s3 l: m6 r* g( xlet j 0
" ?( ^, o+ j. o3 @: e3 S1 `let note 0, D, s0 j# m' }7 [) ?
let k 0% B+ I- _$ n* a8 m+ I$ K- D. Y# J
;;
计作出过评价的邻居节点的数目
# C3 ?: o- }6 E  I1 Owhile[j < people]$ q+ E6 \6 V9 K8 P. [6 R- J3 C
[
7 e: B# z% H0 Oif (item j( [credibility] of turtle (i + 1)) != -1)
3 m6 n+ T8 t3 \) j" e& s1 C9 o;;
判断是否给本turtle的评价质量做出过评价的节点  x7 v5 y9 {" ]# a3 X; R- S  u
[set note (note + item j ([credibility]of turtle (i + 1)))
( N$ B1 z5 A, }/ ]( Z1 d( B) b7 x  A;;*(exp (-(people - 2)))/(people - 2))]

' W5 j/ E1 a4 t& j9 R! Jset k (k + 1)
" U1 e" P; Z& X: W0 V- d1 D( v]
, d0 Y, [% r& f& \$ _set j (j + 1)+ @! B, V9 ^0 _/ c4 m
]' ?, i8 G4 M% Z: t
set note (note *(exp (- (1 / k)))/ k)7 {2 J. i, ^0 S/ E
set credibility-list (replace-item i credibility-list note)  n# Q  d. \' z3 E! [4 @
set i (i + 1)
$ d+ x4 g  H1 b3 g. \8 k]
: q. {( L# K: p+ m8 F' s$ k" T# Y$ uend7 ?6 e! _8 g* p. Z! i% a$ h- y- b- p$ ?
) R$ j9 L3 Y% b9 ~. [% Q0 n
to update-global-reputation-list; }+ Y+ M& F- n4 M. ]+ |
let j 0( Y. C1 t( K* }/ p/ }- P, T
while[j < people]
2 T8 p! h; J6 }7 s3 O[
% w6 Y0 E. J& Y, t# S5 Y& |let new 0# }* @! V) z5 u2 {
;;
暂存新的一个全局声誉
: Z9 |: y' c0 L$ p$ c+ tlet i 0
( F: m/ G! V9 Q, P/ A3 w3 \1 ]let sum-money 0
. ~  W, L; Q( z1 t& k, d5 H4 ?let credibility-money 0: o3 E) x4 |9 M6 X7 Q
while [i < people]
# t/ X: F# D: e4 P( r[
( ^# Z8 c( d) M# `set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! R7 O8 P& |' f* t/ n# U
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- e4 i! Q5 F" q& U# ~set i (i + 1)
0 \* u! b% q, I' v. z: W]
& x4 G% [0 [+ Tlet k 0/ r& }8 z4 J+ R. W# v! l% V$ E2 f
let new1 0
- C3 s7 Z. z3 j# A  j- nwhile [k < people]
: r+ o; A: W3 f3 A7 K4 u[
9 r& [' f5 X. Q2 r, V2 {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)
0 L1 h- Z0 S0 N" c  c- L! \0 W8 ~set k (k + 1)
! M% q1 A2 V6 e: n' j- b]/ A' `5 Z2 Q4 p7 K6 r
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 c$ U2 t" `( u8 J  Nset global-reputation-list (replace-item j global-reputation-list new)- j2 j8 w  A9 o" k& h% \8 |
set j (j + 1). _5 G! ^! C( b: W* m& T  U
]1 y" l: D, B4 x) x5 E
end
& K3 l3 R( J1 {. {9 w/ c# }( \- c& [% `+ |  V2 ]9 \9 ?

! A. G; a5 }! O% s4 l/ k
% y! }3 m% U* T- K+ A& Ato get-color0 l5 r' r2 I1 n3 Z& o( v$ s

" f" ^6 A1 x! G" Gset color blue
; a$ A- c- T' R9 a
end" J' z! k$ @; z( v2 \7 I

7 M/ g9 U9 G: }+ g# l2 \to poll-class+ O2 r7 e7 f9 F0 D- G% P6 A$ \
end
! A2 c; `, ~' u4 w; h$ l& u* I0 O8 c1 o) C" X! y( ~6 {( R* y$ P0 U
to setup-plot1
$ c" a( T$ U; Z* ]
3 N8 D2 [; [8 P' Xset-current-plot "Trends-of-Local-reputation"
$ ]7 y7 a& S7 I

5 w. f, t5 j) m* o- yset-plot-x-range 0 xmax
4 f, x- B' \& I( A5 M' o6 V

4 J* |5 t4 L7 s: P) Lset-plot-y-range 0.0 ymax

% u6 K; j8 Y8 kend
, W  |8 B/ A# Y$ f1 x
# q4 K3 |9 C5 w* w' J$ M; Sto setup-plot2
5 ~+ Q' E( `' t7 X4 A. {/ R5 _6 C2 h1 W& ~
set-current-plot "Trends-of-global-reputation"
! @4 u, H! X. J: D7 _( f* T5 H

7 ?! O+ u  ?9 y7 ~0 {6 U8 F6 l$ cset-plot-x-range 0 xmax
2 ]$ [/ V3 K/ [% v  Q
  ?. m9 [9 D9 \0 e$ }
set-plot-y-range 0.0 ymax

+ E7 Z6 z2 s. Aend% |( k2 R2 x4 q

: q  g# J  M  J# _  A+ wto setup-plot3
8 W  s. E( b( P- Y" s
( W3 J' c, P( d! B. C: [+ dset-current-plot "Trends-of-credibility"

1 Y8 G5 l  k% K" d& |0 [6 u% |( j/ z6 B6 P
set-plot-x-range 0 xmax

2 e7 S% e' n& a' ~8 G6 X
9 j- J6 `2 h9 g0 Dset-plot-y-range 0.0 ymax
2 {; k( v0 D# z3 A* ]7 l
end
2 {# n! x/ V' [' {$ k
5 \: s3 E& Z2 K) ?8 _( u+ mto do-plots
/ F7 q# a: L' |+ F$ h% V+ p8 Tset-current-plot "Trends-of-Local-reputation", e! P7 c: o% P7 @
set-current-plot-pen "Honest service"
7 e/ j5 W( G( xend
/ G! x; J7 s: u5 u% T% y
1 ]7 H3 a: j$ m2 `- m9 \0 U[ 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.
+ V% M8 T4 t3 p$ j  p) R; [* n. u, t& {) a" ^  S
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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