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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( _3 ?& k6 d! eto do-business 6 u  q# \$ {& x5 p( c% N
rt random 3604 b3 v8 e9 O$ U' _2 A7 d% I
fd 1
* ?' Q/ m* e1 u6 ^+ E5 Z ifelse(other turtles-here != nobody)[
# R1 ~, l8 a" |   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.
0 s! [, K* G( ~5 n2 l( N) J   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : T. I; i" J3 \3 c2 v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 {/ z' u& n7 ~. k  u; J
   set [trade-record-one-len] of self length [trade-record-one] of self% h; a9 C- v4 s( {- ]" j
   set trade-record-current( list (timer) (random money-upper-limit))7 c, T5 A5 ]! X/ x" I2 V  ?
7 y1 v, z( H: m& ^+ N* O0 S" S4 w
问题的提示如下:
( W1 V/ m) x% ^+ t7 x4 ?: C9 a7 @8 A+ ?1 R' \
error while turtle 50 running OF in procedure DO-BUSINESS4 q& Y0 _& Z+ ?7 H9 x
  called by procedure GO
4 u5 n) u4 N! [. HOF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 j6 J) V; |6 l) F/ ]8 x. \
(halted running of go)$ X, K& X8 J2 l$ O( a0 v% }
; Y7 d# U+ u( q6 X" E) H; q
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~~! ?+ ~& q* O0 c: q4 c+ H) f5 o* W
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
/ G1 x; j% a7 S0 X( _* Y7 vglobals[" ~0 c. M+ y9 b  t% q
xmax8 o1 N, m) S' ^3 G% i* E4 P
ymax: ^# x- `; [. g: m2 n
global-reputation-list1 L3 a& K& K4 Y: `
& P" s: ]" p4 u) y9 }8 \& f
;;
每一个turtle的全局声誉都存在此LIST# S. h5 r' s* ~( \) g
credibility-list
; b' T# l  m4 E6 y2 m- ]/ @;;
每一个turtle的评价可信度4 P. r2 t+ \1 u9 ?! z
honest-service; Z. ]& C- K; a% d* Y; g5 m0 P
unhonest-service: c6 f* q( i5 ?# m0 K
oscillation
' }& T# t: |1 N; ^/ frand-dynamic3 F$ Y( F1 x6 q1 I0 L4 i8 I* |. d
]" k3 e  I2 _# f. l# g

- j' Q2 U; m# |4 V7 Wturtles-own[
. {" j' W. m' {0 S# W) `% S1 ]; otrade-record-all
6 w4 z  g1 N! n8 J9 p;;a list of lists,
trade-record-one组成
3 v* F* E- C, Htrade-record-one
2 O; l/ b' \9 s5 v- r! D;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ k5 H* i: @% a9 S/ W: A1 N6 j  c8 x  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]]! N9 R" Q( \6 g5 y* x' 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]6 Z3 T. X* Y6 D1 U
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
: |1 p) k. U- p0 }' Nneighbor-total
" X2 g" s) i( R# \9 b7 D+ l7 k# G3 x;;
记录该turtle的邻居节点的数目
; w  j# S% j! ^2 D8 u% utrade-time( E$ q  ]  p( F
;;
当前发生交易的turtle的交易时间# N: V. |8 H) u+ Q4 s
appraise-give
( i% D" X  Y# O0 j8 w0 d9 u;;
当前发生交易时给出的评价
+ v/ t3 K: v3 h( v! Uappraise-receive
3 {9 w; c- }8 X/ t3 F% R;;
当前发生交易时收到的评价( i3 _5 s# z: j# G$ Z
appraise-time
* u6 N! b% {3 {! O  p$ Z+ e;;
当前发生交易时的评价时间- s* x+ y* v" ~( M
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
& v7 f$ `0 ^/ h  o% dtrade-times-total
, i! @2 @7 o4 R. k;;
与当前turtle的交易总次数' v2 q/ w# J  @8 a. e
trade-money-total- q, M7 u% L6 m' H
;;
与当前turtle的交易总金额  _+ k9 @, |6 r# m
local-reputation
/ y9 X& i0 e3 j9 }- Uglobal-reputation
8 Z/ M6 I; R9 C# m4 o. [credibility+ c. k2 ]: ?/ L; K+ J5 A
;;
评价可信度,每次交易后都需要更新# b# ?8 q% z  P) r- z
credibility-all
& x3 f5 G1 k1 P  C+ Z6 [;;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
" {' C3 O" x1 ?4 e2 z( o0 J1 m- |
;;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
, b; g" ?' k0 t+ l% z/ Kcredibility-one1 e5 y1 R7 P) X* |( I7 P" K: [" w, E
;;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
* G4 X0 h1 k% @! n$ Jglobal-proportion( ^+ B# h4 d- E' T
customer" T3 q, V. T* j! `3 Q; P* J5 }$ T
customer-no
2 L7 e- K- u" W$ Ltrust-ok8 p+ Z: {- U4 V8 f
trade-record-one-len;;trade-record-one的长度
8 ]- }- w  L9 E% A9 ~]
# \  k- w" D# s, \! g0 }* l5 \0 E& S  t
;;setup procedure* }, M1 o, q; n! F6 I6 B5 _
  @+ O. y! K/ K! V' I6 i  \' |$ }/ Q
to setup
* T2 |3 k7 P, _1 i% S# u
2 l- R, I; `  p  D9 E2 _6 Uca
  w6 y9 D  C- x; j5 `/ [( ]

7 b1 B' T0 H' t1 \0 Dinitialize-settings
6 {% Q# A# j0 E9 O

% z! v& _$ ]3 c" g& w4 ~crt people [setup-turtles]
0 ^( @" p5 r) c9 i( @- F
4 [2 W" X8 A) Z' v& J$ g
reset-timer
" a/ w+ h' `8 @7 t9 h( ?7 b3 O$ j
" c* x4 n- k1 ^7 x
poll-class

' k! C6 ^' G9 F: ?1 R0 x9 M9 }# ]
* A" V1 E. n( D, n" Ysetup-plots
( a! Y' Z3 Y8 p" j
; }0 A( }5 L5 x5 T; e" U! b
do-plots
1 W7 M8 N) d7 Z! _3 N+ c
end, {( G  y  q9 ^
2 H& _, m' a2 l
to initialize-settings7 l+ U- V1 z  X3 C/ m9 G

- r. o& }) l! Z3 y( rset global-reputation-list []

$ ]" j! t: E. a
8 f- u* w6 U  _6 _  nset credibility-list n-values people [0.5]
# J0 ]6 p0 ~1 \8 t' Q) k

8 u  z% p2 t$ h  H# \" ~set honest-service 0
- |  }% x+ ]! m/ C
" t9 t- @3 y" m: _$ E, Q! s% U8 M
set unhonest-service 0
4 x1 z- H6 @6 J

5 q" `% n/ ^0 Z, X, l! uset oscillation 0
8 x' I8 H. z, A9 {" E

: A: _6 M1 H, W: xset rand-dynamic 0
; {0 Z+ J7 H% K, U
end2 R8 v* i8 d9 }# U- }  x0 J4 X

' J. d- U, H/ i5 ?* i4 ^% oto setup-turtles
1 X% X3 C$ g  E$ {9 Nset shape "person"2 f9 J/ a$ w2 H$ Y
setxy random-xcor random-ycor
, V& K3 G; y% Aset trade-record-one []
% T, M3 t3 L" z: K

/ [' q) n; c4 W+ vset trade-record-all n-values people [(list (? + 1) 0 0)]
+ t  C. a1 `  I2 l6 j5 g3 f
* u* J/ f! {2 x- Y5 a; T# f. }
set trade-record-current []
; `8 w" N3 M- w* x8 l1 eset credibility-receive []/ t+ v& T8 q; A8 w- N- m& r8 a
set local-reputation 0.5& t! C) K  C' @
set neighbor-total 0" P4 K" \% }1 ^) \5 m
set trade-times-total 0, |( W$ i6 q  J5 t1 f% u2 Y& V
set trade-money-total 0
! P' J6 q; x9 v1 W7 B( ]" Xset customer nobody" |3 I9 i/ O" M7 k* `8 {" U
set credibility-all n-values people [creat-credibility]
$ Q( \6 Z% S9 Qset credibility n-values people [-1]# _) L+ D9 S8 v* z+ Y* P
get-color
! S5 r6 X7 y8 s* \+ R% ]8 o
- ?& [3 R; C& h9 o* ?. q
end
* Z$ h5 s5 ?* b. I) H
* g6 _0 A1 c+ o" h: Pto-report creat-credibility3 K  x1 E% A+ _+ ]
report n-values people [0.5]  e7 s7 V6 m: J9 r2 g  @$ D7 m4 i( }
end$ E" d+ V7 w1 h& n4 |6 `
- @8 j/ p3 w8 q6 M' R
to setup-plots( Y& Z; R- E# K( i& k
. Z* p; A/ H3 T; N5 |- e/ B
set xmax 30

# z" f9 I: Q4 b5 T" k7 t; b" |! a0 m" _
set ymax 1.0

/ M( i" h# W0 N. k" l- q: @' x7 h/ z, L  N  y% R1 }" N
clear-all-plots

5 Z* M7 _- Z( ]3 `- {$ [" \
! X. @+ I: V  f3 W" u# Jsetup-plot1

- r$ v" @9 Y2 Y; R
4 J5 ?' d, ]+ E3 jsetup-plot2

  A% Y7 r4 v# {9 `9 M4 E: a' O$ w8 i- H, W7 @5 I3 Y+ p2 }. r6 p
setup-plot3
9 ~7 a6 w' q* e4 {- X- C
end
- s% m2 W% V6 E5 R3 O
- V" J. J' `/ f0 {& s" z;;run time procedures  y) l* _2 q3 z) F3 v6 a/ ]5 M7 g
7 t5 Q4 `0 n1 e5 e9 e  o
to go
8 Z" ]7 @2 T& k- b. J1 j" M8 v  B4 m+ G
ask turtles [do-business]
7 X$ r/ H' N0 X5 e0 C
end4 o8 w/ n3 J+ m3 X: d. P+ z

) F5 m' O4 A. L9 T8 g; V. h3 e9 R0 Ato do-business
8 C! T6 t9 _: r" @) }: u* w% ~

2 x! [6 @/ s- H& X: N% Y, t& K, g' H: y, {
rt random 360
0 }% H1 Y7 H( {3 A  r6 {

. i  p' l7 [5 H: H, b2 e/ I; Tfd 1
/ O4 `# B- T6 ?% E, w; |% q) z8 q/ r

. T. d7 G! z' L. C- G! bifelse(other turtles-here != nobody)[

/ s* i" C3 `/ \4 l& n
; f8 p& x, q$ }2 e$ l2 |% u3 lset customer one-of other turtles-here
( O. {* q8 M+ g. u4 t# W, H

, P. ]) H& T+ s* ^;; set [customer] of customer myself
# ]& d' z. s1 x$ v( `, M; H8 I# ^
  E+ a5 {$ J# n& m4 w0 M
set [trade-record-one] of self item (([who] of customer) - 1)
6 P/ a" L; J' a0 d[trade-record-all]of self
/ _# x: t9 R) B- J3 d9 t9 d* K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ Y& F* K: r& M6 C+ Y

: I4 J, i- b2 W8 Jset [trade-record-one] of customer item (([who] of self) - 1)8 x2 Z* x% C- d% v9 }
[trade-record-all]of customer

1 G$ I0 ~: t5 s2 c+ ]: Z! t8 |+ q) B& ~
set [trade-record-one-len] of self length [trade-record-one] of self
6 d8 [0 U8 j& l& k+ j, I/ g) E1 O
0 B& a( n2 Y9 \, D+ Z# u7 V1 Q. i$ m
set trade-record-current( list (timer) (random money-upper-limit))
' v# c. g2 ?. |$ N
3 S, l( |# q; T) o/ r7 y1 I5 u
ask self [do-trust]3 g# \; U$ ]' U) W- k( F* W1 T
;;
先求ij的信任度
6 B. C7 ?! b" N* d) P- d* ^; Y4 Z1 e( a* R) e2 X% q% i' t5 V* |3 n; G4 I8 B
if ([trust-ok] of self)
) l. H5 W0 T$ n0 n# T1 ~7 r- H, ^3 d;;
根据ij的信任度来决定是否与j进行交易[& g) Y4 Q2 ]+ c+ s6 i9 ?( ?
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" q2 C, [- ~% C2 J4 T4 f" X
9 D' n3 ?$ H1 ]1 D2 U
[
0 ~! m) ]$ B0 H, Q2 i

$ |( ]! R: v% `0 W% F* |do-trade

8 O# e. i# `1 d8 O9 ^" Y& f/ z3 h* J
2 @5 v" V1 A1 v) r+ A4 D0 e* n& O6 Yupdate-credibility-ijl
8 N3 y: H* ?* a# `
7 h* B5 N, E8 N) q" M
update-credibility-list) r; Q) n, D8 B" Y

0 \. L7 x! g" N$ L# \
3 O8 ?( l" M) h; p9 t$ f5 tupdate-global-reputation-list

; C3 z3 w) F8 i8 |7 C5 i, h7 w
2 I4 A1 a) S( N6 Y9 ?$ Spoll-class
8 h3 `% N7 M  y( {" M
! Y3 L- v3 b8 I9 R& Q# e3 ^! F
get-color
, r  x6 u; p2 R  U5 P' g
# ]$ ~. H5 `& S. M$ C# K
]]4 Z4 B% Y3 r/ h; b: Y) T
# q; W6 K  t, Q
;;
如果所得的信任度满足条件,则进行交易. t7 u- F: P  @) u# l

: }" e4 h2 Y. m[
& B' k. i9 g! D
9 `1 V% y2 H6 u1 c/ I
rt random 360

% Q- \, R% F6 }) h# |
# J5 |$ G( H- A: p# qfd 1
7 s9 y* m/ O3 a7 \- K% S
( h0 A( J$ u" D4 g. b
]

. s' q% c8 o% N3 O8 \  ^. k) V- y3 t' c- d5 r8 K
end

$ c, K  ]9 [8 A* i9 e
0 I  J+ {" [0 n- e7 `  H' P/ s! Oto do-trust
" @9 q. [, {) @: p% X  ?3 Aset trust-ok False
) V1 `. z( H  u  Q+ h
7 P2 x- T# {! l8 @

: {' ^7 B! ~. m* clet max-trade-times 0. L, K  p* h- C9 B0 I
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 i1 U+ G3 ~$ I  rlet max-trade-money 0. v4 E9 j4 t) f! H" h+ @$ _7 o
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], E# L5 o: |; G2 [+ {- d
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ {: Y% Y% f/ N1 n/ v
0 B# D! z7 g1 C8 o' w

/ o, E& j/ E$ z% u% ~0 J3 Lget-global-proportion
& O) y! O8 `6 w+ U6 |' {- |let trust-value! |& t: z( W. V
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)
' \; ?  \. a3 L
if(trust-value > trade-trust-value)6 d2 G; W$ V8 U% B5 G
[set trust-ok true]. h' c0 V. k5 s2 Q% N1 B
end9 _3 t4 o' y# {$ C( p0 D+ B
0 b9 }3 {+ O: q' `5 |' N2 z& ~* G, I
to get-global-proportion
. K. F3 s7 ?  _2 q; y! uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 J0 m0 n2 [, D$ i& k
[set global-proportion 0]  t* A+ k/ J) d
[let i 0' z3 R2 S/ f$ Z# O  s# @
let sum-money 0( {) E# |" L- {
while[ i < people]
1 Z, {5 u& {: O$ Y$ N; I0 g* L+ k[
/ g- v4 f; X# K% ?3 Uif( length (item i
5 E+ X4 _6 f# ^2 |[trade-record-all] of customer) > 3 )
! @, D6 D6 E  W& M7 [/ I
[
; ]& r" |, c9 U" M( Y/ ~3 sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 [) u1 S8 @9 E- R, y]
. K; U: b2 @" z1 h1 D* t0 ]  K4 s]
* T2 }0 [# J+ M. s" v* c/ plet j 0$ |+ g& E2 `! L$ u8 `
let note 0; l+ _! J; U  V9 o! j+ o+ I
while[ j < people]( Q) @8 _( L% Z/ J
[
! x, n! P+ s# M% g9 Jif( length (item i
& v3 Y: r! m7 e6 x9 X+ f! E8 ][trade-record-all] of customer) > 3 )

" y& q/ ?" |* A, A! |[( l% h8 o/ e! b' C8 Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# Z+ @8 G0 ^$ h  d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% k# q7 f) z* B* l% T% `
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* p9 G/ t  l7 h
]
" D2 y: t6 }! h0 k" o]
( I8 t) p7 a8 }! a% }; bset global-proportion note
# ~: g- Z; \6 @3 S1 X]
3 [% V4 N: D( rend4 z$ z5 n: L% m, S' y0 `

# E  L" T6 R+ j: r% B& }3 nto do-trade3 o9 r( t0 h7 p6 ^  R- n8 B
;;
这个过程实际上是给双方作出评价的过程
. L% q+ ?; A; _1 h* l6 Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% Y; e5 n9 z8 s/ C0 D* ~& p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& j" d' n8 {9 \. ~  h" g
set trade-record-current lput(timer) trade-record-current
5 P6 E# c' e( v! m;;
评价时间) c% v# w% {3 `; u( k
ask myself [& o1 U# ^! ]) |2 B2 [& G/ O5 H
update-local-reputation
) O/ H3 M3 u$ l. t" oset trade-record-current lput([local-reputation] of myself) trade-record-current
# G9 ]" c* V0 E  r]
, }) G2 b  ]' d* _4 Wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" \8 H% |$ F* M9 ^
;;
将此次交易的记录加入到trade-record-one
9 O7 ]2 }8 t0 eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 h/ y7 P8 C# U) D( `let note (item 2 trade-record-current )
7 ^  ?# i+ ?) w' o+ p2 aset trade-record-current7 m  @& t1 G8 J
(replace-item 2 trade-record-current (item 3 trade-record-current))

: A2 a5 O' K8 Xset trade-record-current
% \: n7 a! A3 F$ \(replace-item 3 trade-record-current note)0 u6 y( E  y. Q" p, T
" \  |9 q+ O; H* S
$ [5 e1 `5 c$ ~5 e, B
ask customer [2 N9 h2 n- K, W+ \
update-local-reputation
. y2 B- ~0 v% f/ L4 X. z5 @$ kset trade-record-current
7 t5 X9 W' V4 L; I+ j' \(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) z. i) G9 m# t: L% u, N8 p! u/ p: T
]* ]( M4 ^7 n# h4 Q, E
; o/ m, e) i0 e+ j  r, X2 ~
" H7 s& s. J6 k0 f" s3 n- Q( h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 F" {+ A8 Z' V5 W0 s$ E, R
8 Z  i. s. k7 W7 d  k* J( I# t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 ?! H( k" E2 w3 q' {8 ], L! `
;;
将此次交易的记录加入到customertrade-record-all1 _  W3 v! x* W+ s+ M. A
end
. L6 k6 j3 u2 I* W  o
/ ^/ v% {, e/ F, U- y8 dto update-local-reputation
0 H" b0 I7 y/ y5 V& v7 Wset [trade-record-one-len] of myself length [trade-record-one] of myself; r+ b, W$ ]7 Q* N8 n7 S' ^3 y

/ ~0 o* U& x; a# G! P/ K
+ o5 b* G" R+ t1 N- B2 l+ ]9 ]1 f;;if [trade-record-one-len] of myself > 3
; Q/ F* j0 v  U+ x" [0 v
update-neighbor-total
8 `) W, l! m4 u, L% t% g;;
更新邻居节点的数目,在此进行
. i$ h- F) e! J, Nlet i 3
( ^, j& ]5 M$ D/ N" v) G8 \! slet sum-time 0
3 p5 N0 v, ^- l) \9 Z- W! c2 _+ B" C- Qwhile[i < [trade-record-one-len] of myself]
" e) J$ O/ ?4 {+ _2 i[
: j6 m0 D6 T% v' t( `! Z% W% Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), }! W2 h2 }9 D- b
set i
3 Q' O# B' w: H3 @1 C  S( i + 1)

' X8 ?* U1 I" E]2 p0 ]- @* q. P8 r
let j 3
/ O7 e* d, w( V$ B7 a$ B' ]let sum-money 03 K6 c1 ~- ?. [9 |3 c7 B* Q1 p
while[j < [trade-record-one-len] of myself]! A7 {6 _9 N+ e) E$ d# F8 e5 C
[
6 |" s$ Y! b8 S  X( r3 ~7 qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
$ n. Z$ X. P! j; Cset j9 u, B" o" h5 a* l9 q4 F, z
( j + 1)

- {* l2 b* M& x; H: c- s) |]* O1 x/ J# q! [0 M. B* @& \
let k 3
- Z/ N8 p& J' e4 i1 Wlet power 0* C2 @! _; d) u7 }
let local 01 A8 s2 ?& v7 c3 g+ |
while [k <[trade-record-one-len] of myself]
9 i' M( U  X5 C; j[
/ ]# t- ^! L; o% X6 N- \8 _" Y6 Lset 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) : k3 g- }* I+ n2 i4 w3 h) G+ M- F* _
set k (k + 1)2 T3 C8 Z% u) i4 e
]
3 A5 r7 n+ D: C7 Rset [local-reputation] of myself (local)
! V- v5 P9 x& h& eend
1 g1 t) K$ h- O& y0 I2 `* i  z4 b( I8 T% O$ d7 g2 x
to update-neighbor-total* d$ s6 L! U' B* d# w

/ C8 p: h4 D* }2 c5 g1 iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( W3 Y/ ?3 e7 D# M& t
+ l- F  Z) K, D4 q, @. `

, u1 |: k- h$ S0 x: Cend
3 e% M5 {) Y  a* \4 G! Y" }- K4 |
to update-credibility-ijl
9 E$ q' `1 L4 `% W
% \0 a( m# q/ h* r6 I" s;;
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。
6 _' @" O3 H& Q3 M& \0 ~: i4 slet l 0  E& Y+ R3 l1 j* b
while[ l < people ]& Y$ Z, `) T/ M: b) `, ]1 N
;;
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3 ]3 F8 J8 M" K( G; ^9 _7 y
[% [- j" S- u6 G$ U
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% u6 f7 W* @. o0 E+ b' M
if (trade-record-one-j-l-len > 3)' G6 x  D( T6 G4 w* B
[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
% m/ p( H" I) f+ g- S* qlet i 3  r1 b0 Y9 V, H
let sum-time 0
' o9 ]; `5 Z" g" pwhile[i < trade-record-one-len]+ R- w. i5 _5 n2 t
[
- @4 r; V5 {9 n5 kset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" B5 `. F4 p2 o3 X. u) L
set i
; d1 z% ?; S; e. Z! @* w1 Q# j6 n( i + 1)
. S6 }, ?4 D+ I: i  D: ?9 B
]
& g/ c: U6 B+ B  Ilet credibility-i-j-l 0& S. ?# U, c- S( s5 w$ [2 \
;;i
评价(jjl的评价)- K. s& E/ h! o6 x1 m4 g
let j 3
& l& t4 D# E8 P  m; Mlet k 4- j9 O6 j  x- w
while[j < trade-record-one-len]2 I- R& J4 [& n$ J
[9 `' b7 N2 g4 I8 t' ^3 c4 v7 O, `
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7 W2 [, c8 Y2 i0 ]6 G
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)
9 y5 F. V  P% K- ]' v- Dset j
% Y( N5 v+ j; q, [5 W4 y( j + 1)
2 ~0 ^/ z; K( ]1 h' F8 l) p$ j! U/ t
]7 Z( P6 D  V" f6 R2 J4 e
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 ))
4 N) u& i& b( m" A+ x# q2 |9 N8 T& Z6 q/ `2 M) g; O
$ Z* @, @' X. \0 t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ ^( j3 ]5 _9 ]
;;
及时更新il的评价质量的评价$ ]  g; Z) {2 b8 v9 A
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ u( P. |& D& D6 D- ?" {set l (l + 1)
. t) G  n" j- x" ]# |]
4 h$ W* z, n. r' ~7 G# cend
9 r1 D- ?% D3 w: |8 x8 `! \4 _, d" Y1 }  d! h1 U
to update-credibility-list
" }. @- [) Y' ^let i 0" U% A9 L$ D; q9 Y( Q
while[i < people]7 Y# _/ m& S1 `9 n$ n& p
[
- Q+ F4 g5 q2 A2 A+ o+ |3 D' g4 Blet j 0: q6 f% U. [) n! u- V4 Q
let note 0  o! A# f) B! u( C
let k 0
' [. W" G6 g3 h/ ^  R% G;;
计作出过评价的邻居节点的数目
+ ^3 W" u; g% F' n! g( \- _while[j < people]% e2 S. G. j; H( `) F0 M9 Q
[: [' w% M! v7 S% A& b. J; ~
if (item j( [credibility] of turtle (i + 1)) != -1)# E7 j0 Y0 {; B  s/ l% G
;;
判断是否给本turtle的评价质量做出过评价的节点# h8 F/ [; E1 M* ^! I  M2 L
[set note (note + item j ([credibility]of turtle (i + 1)))9 S  o3 {) G( [
;;*(exp (-(people - 2)))/(people - 2))]

6 K! g  U7 N2 Z5 b' M6 J# rset k (k + 1)
7 v% s* X: M$ P* X: W3 s. _]
4 O: p) {) Z0 t" m6 w% Aset j (j + 1)6 E7 l0 Y$ g% Q% |! A4 a
]
% j5 e  h- F$ V- M+ f: T1 S2 Hset note (note *(exp (- (1 / k)))/ k). }8 ?+ n7 C4 M- P* e
set credibility-list (replace-item i credibility-list note)
  x3 ~7 l0 Z8 |. e; Wset i (i + 1)! @& T3 L, i4 _% G2 X% C
]& C! Y( [# x0 i
end% g# \. n- E3 b$ o0 }- w0 D# p

0 _+ k& h, v' t$ b+ Z! Eto update-global-reputation-list
5 P* N, Q4 C2 }0 Xlet j 0
1 A7 [. A- c4 c% b% N5 Dwhile[j < people]
3 |( i: k6 m5 ?/ A( l[
/ q* R  K$ U  Q# Rlet new 02 O0 s; o4 p# }; ~5 B* O/ D' R
;;
暂存新的一个全局声誉
1 ^9 {  N% u# o' T0 G7 ^( Wlet i 0& Y+ S$ ^3 {! R" p6 I
let sum-money 0
( G  g( ?; f0 ^6 Q+ Tlet credibility-money 0" x+ Q& Y: b/ \3 i. \
while [i < people]# s/ r% |0 s4 `, c
[. D/ y2 r/ \. D9 l% I, D
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 m( A$ Q$ M$ g8 t2 A2 c5 A- {
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 g8 X9 a7 O0 _& e- rset i (i + 1)- s$ s7 }6 t8 V: f% v
]6 x% S, Z9 A; }+ L: |! Q0 w
let k 0
1 o+ N1 u% [( p7 O5 ?let new1 0( G# D( @$ X0 @) f7 r9 J, G
while [k < people]
. S8 J$ L1 f, o7 [$ q6 L' |[2 H9 M- g, J  Q+ Y0 I2 J3 ?: w  v
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)
1 t6 J$ Y$ R0 s2 Y/ ~set k (k + 1)
0 a6 E$ d  K+ c]8 u' t" U( A8 ^5 c1 f& K" s5 ]9 P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 Z9 U7 h* G) D: ^set global-reputation-list (replace-item j global-reputation-list new)
: V1 E+ r  A- Y) F3 V+ V  }, Cset j (j + 1)" U1 U. B- Q/ K. R
]
0 a: _- e1 o; {6 M4 Uend: S( ~9 b7 q$ |9 w
9 K  c- i! K. _, e% ^) j3 o
9 U6 ]" _9 s4 H3 O+ R5 c; U: e8 Q
) Z- F3 l+ {2 ]0 p; V
to get-color
6 W2 M+ C! K! @+ n7 ~8 {  H: A1 z. O2 A/ a6 l% g- n) ~
set color blue
, g/ |2 }3 [, N* N4 d
end1 [1 A; C/ P, l. ^+ q* n. |6 e

. g" _, A, u3 Z* V6 J9 ~to poll-class
! q: P2 I/ w4 f$ c( t* pend% _) L9 W9 L6 a3 \0 E# }  j+ z! x; z
8 j5 r  f( W2 q# |4 y6 N! F4 \9 v
to setup-plot1  h8 B5 `: m  ?8 o; n' {" x0 E# j

. q3 v2 M/ ]5 ~/ V$ D% Y7 Cset-current-plot "Trends-of-Local-reputation"
5 h! t. Y% A3 O

( ~3 t; T' c" ]3 uset-plot-x-range 0 xmax
6 \+ [' p# G6 [* q% q# ~
4 Z& s3 u( L; L* [8 D8 j  f  ~
set-plot-y-range 0.0 ymax
) }! _3 d! Q5 Z3 T/ S) |4 M9 m6 J5 D  y
end
: L* u: l' o, V7 t# r. K0 u6 q1 f$ J& ~% ~& ]% [" U
to setup-plot2
, o. x9 L0 N; c. k# x1 F: ?  W+ _! |) H% B! l: `3 v/ P
set-current-plot "Trends-of-global-reputation"

. d% K' O8 }; ^% |+ _5 n
' t, o: I& W% I) L9 Q$ Xset-plot-x-range 0 xmax

) V+ [! o" N6 Z
3 t7 J# i# P' K6 m/ r1 wset-plot-y-range 0.0 ymax
) c4 I+ T+ Z" C$ s# O
end* ?+ Y6 b$ f! ?* {" ]+ M# _
% u( U/ s4 y, M; N5 n
to setup-plot3% B' B( p! l9 v* v

; a) x) V7 c$ ~# ^9 H3 Iset-current-plot "Trends-of-credibility"
8 f0 u, C, |! d3 \- U) t5 q' \
4 N# o; a) `* G; N/ }
set-plot-x-range 0 xmax

" `1 O3 G$ ^6 x8 B) c* }3 T5 c
- ?( E- ~$ @2 Y+ Q$ M7 Dset-plot-y-range 0.0 ymax
" L' Z9 K- Z  |# s1 t. }
end5 [- D$ x! v+ s* {8 g
7 t# q8 d0 [" c8 V/ l5 C  u+ U
to do-plots. |% V, M2 @+ a! i5 \) T8 S: h- _
set-current-plot "Trends-of-Local-reputation"7 E: ^& U8 I8 X7 m
set-current-plot-pen "Honest service"5 Q! U' ]1 S) y3 X* b/ e: Y/ a, d
end
" F' C( y5 f, G2 C7 `
8 T: _: ~1 I6 d! o' ][ 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.9 j! i9 r: L/ ^, X

; }8 q# q4 l7 A6 M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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