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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:
8 }& R6 S5 ^. d: W! lto do-business
9 F* T2 D+ Y4 ]1 l3 ^0 u  T2 z rt random 360
' Y( t* a6 a- A5 g" b: k+ G fd 1
9 Q6 G9 H3 K) G* c/ q# e* I+ L ifelse(other turtles-here != nobody)[0 e( F+ b( s! I* M/ z: ~) _9 L
   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., A; x" B7 y! o, k0 @) h' M# s
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " x( [1 w. v9 H$ @; ^
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 k- h- g$ }$ S6 [5 J& M3 F; ?   set [trade-record-one-len] of self length [trade-record-one] of self
6 [; O5 l& [& B0 a5 F) ~   set trade-record-current( list (timer) (random money-upper-limit))0 y7 {% B" p' ^& J( s
$ L3 k, z1 |  y: c" X
问题的提示如下:7 J2 h) p2 ~6 c# g! w  o4 |

8 r, S7 M3 K) E+ V$ `" Derror while turtle 50 running OF in procedure DO-BUSINESS" z. \6 G7 X  ^
  called by procedure GO/ u' x5 [: a3 I
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; Q* |, F& L+ a
(halted running of go)
1 X( h" `' _3 t1 i# k, Z3 y4 ]9 }* P2 D1 W* V7 [( ^9 t) o
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~~  n" m/ g* M: X( \4 S% P. d
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
1 V0 L: a" n* N) h- R+ |globals[
2 I; P. }" g" `/ \; `9 k! {xmax) K# _/ P7 s- L. z+ y* y
ymax
9 z4 a! j" o  ^, r3 Vglobal-reputation-list0 k: y* ?7 n9 L  j

- Z8 K# V- ]% o, R+ ~1 z' k;;
每一个turtle的全局声誉都存在此LIST- e3 o6 q* ?  C4 ?+ o. g4 ^
credibility-list; d8 Y! c- {( H  H9 p' Z
;;
每一个turtle的评价可信度+ n% s: M+ z" K/ p7 I4 ?  D" r
honest-service
9 i1 `5 U8 S& n) m* E9 }unhonest-service
4 `4 j6 l: ~5 h) R* u+ Ioscillation
- `$ R' ~4 ?/ l' \; G' Crand-dynamic# j& ?8 w& q. a' E- m5 J5 l6 V
]0 t& S2 d* G& n; S: [2 L; ^+ p

7 f8 |& v$ G! wturtles-own[
$ t" M8 X9 N: ?5 _! m' ctrade-record-all- G/ p+ v: ]/ `
;;a list of lists,
trade-record-one组成
; \+ |" x% p. V3 @" [; c* l& }! ?trade-record-one
" ]. q7 R: s3 N9 p# E  c# x6 K;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" d; k* B, J9 C; j
2 m- Q* X# W; `3 T& {;;[
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]], L1 t- R6 n8 V3 q1 T9 k, j- T
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]  T" H1 g5 E5 b3 i
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# Z& G, z0 t" q: t. y" [: g
neighbor-total/ p( c: X2 k9 m6 R! n+ E+ |) F. Z0 C! V
;;
记录该turtle的邻居节点的数目
% D6 c7 R7 n( _4 I5 O" d) {trade-time
, Z3 b6 Z( n9 R0 G4 {6 Z! [3 W7 y: ];;
当前发生交易的turtle的交易时间
* l& N* D+ i$ a: Y  [appraise-give, I4 A) @8 i7 K( l
;;
当前发生交易时给出的评价
% r7 P4 a- C4 x) s8 M9 o3 t! ~appraise-receive3 Y+ \) }7 L  O2 i' ^
;;
当前发生交易时收到的评价
& X3 T0 F1 ?; v9 J, jappraise-time
" f5 }. H) c, D% a: C8 Q;;
当前发生交易时的评价时间
& Z+ |* V7 U8 w+ _* Y  u9 d1 ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
# ]) J& {5 X( ]( U9 Rtrade-times-total
: \; M7 P# P* `# e0 `;;
与当前turtle的交易总次数. \1 a7 V7 q* N! Q. R8 A
trade-money-total+ H" I1 H! w# F3 L# o0 @0 P5 {, z# z
;;
与当前turtle的交易总金额4 [/ d- g- z+ B4 ?$ a) M% ^
local-reputation1 N) c! W/ U  r6 E1 {; p
global-reputation4 t+ Q9 j/ f  D, p: L
credibility
# x" [* q& `4 d" S9 b) O* Y1 J;;
评价可信度,每次交易后都需要更新
7 [! R5 m( c: v$ m, v& gcredibility-all  W8 Q0 J/ Y5 y) C' Q
;;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5 {0 E7 e$ q1 D

4 Z4 Q4 g$ ^$ |/ }; {;;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( K' n1 ]) L4 {" U/ W$ G
credibility-one
3 _9 r3 K- o0 d: ?, |8 k  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
# U/ {$ t3 q' }9 d+ N7 eglobal-proportion& {( z8 p: e; Q! x) c. ~5 N% s$ W
customer1 M0 c3 V5 T. \. R5 T- J
customer-no+ O4 K. H* [- n
trust-ok
; T7 J8 ?- i" o- i& s+ d* D3 |trade-record-one-len;;trade-record-one的长度, ]: Q! `4 G4 c( \( w& m
]
5 D* `. M3 g7 S7 l% {# ^3 A' }- h0 b
;;setup procedure! p, X7 |0 Y! V- E
0 [# r) m6 b% g' v& G+ h( _- X
to setup  B" k6 P6 L  ^" m1 G/ k
4 H0 q7 l3 M. N( d
ca

5 n9 H0 n, p, S" A( D! R9 D9 E8 G3 q6 E- n5 `# @3 h* U/ K5 p
initialize-settings
/ o: P9 y6 X. L0 [
6 L8 B: G' `8 Z' b2 }% U5 j( a6 R2 M
crt people [setup-turtles]

+ g) u/ x$ Q2 q" ^) d! a
9 d, `& x1 }% e6 _( D8 a% A. sreset-timer
( v  ~' A- [8 o/ x. I  i5 ^
2 e; t0 L! I+ N5 n& p) Q
poll-class
1 N% m* ~2 I8 b4 o

0 c& \4 m3 C3 q, Esetup-plots
) ^! H0 l) g% g

7 \1 p: V( [% V! ]8 i% j8 Bdo-plots

  X2 a- d% K8 h3 Z8 S9 i/ aend
% D1 y* J+ ?* \* l
3 l: @: m. `$ N3 u( [5 b& Xto initialize-settings
; ?' _2 B" [5 x( x: _+ o* W, v7 W% m$ Y  a# S. F' L' e
set global-reputation-list []
6 F% h5 w, d# z# H
/ G6 _! a5 q! H% V' [4 m7 g
set credibility-list n-values people [0.5]
2 c3 m& L& k* l8 [) a6 H" K9 s
9 N: @# [+ e! b& t, Z  Z' r" j2 B
set honest-service 0
0 I) Q2 [0 w5 r. Z

; T  u# J$ p9 A7 h; F+ Iset unhonest-service 0

- {4 s% J+ [# V( ?: N4 ^8 H
  X2 a% w3 E- G7 Fset oscillation 0

* Z( o8 y( Y9 C) d3 B5 O' z/ P9 A$ N+ _3 A7 {9 Z
set rand-dynamic 0
5 ]) ]# g8 n0 ?" O. R
end
1 e0 P1 y: S- O0 ]& }% X/ w8 l% G8 I5 d4 f( A) t: v
to setup-turtles " M; ~% i; U+ Z  l6 s6 a' q
set shape "person"/ t/ j! S# X3 A; }. g) ^1 t
setxy random-xcor random-ycor' Z' ?$ w. [- b/ \8 c
set trade-record-one []4 k) n, C% C9 E
/ _9 _, n+ h. n, V& w9 O
set trade-record-all n-values people [(list (? + 1) 0 0)]
* Y* j. b. a" F: H! B; j6 A

3 ]; ^' K- I. d" Z. Z$ zset trade-record-current []
, k4 k# n" B# F( e  p" ~6 i& x  V9 Eset credibility-receive []
& D% L# a# J6 ?3 U- `5 {set local-reputation 0.52 s. N% _  C! Y* H
set neighbor-total 0
0 u; v+ `# d% q0 t- g$ Yset trade-times-total 04 s8 [2 C# v8 K, T# P& l) _' E
set trade-money-total 00 a* s- X8 [* ^/ z
set customer nobody6 v" E4 ?  C9 P3 E9 Z& C* Z4 \
set credibility-all n-values people [creat-credibility], B: A2 g; ~, V$ b
set credibility n-values people [-1]
* c' \1 {; R3 v7 N6 s. H) sget-color: b1 Y- }: F* X$ G
) v$ z6 g5 c: c- n0 c3 T
end
) n7 g9 C8 F" I7 f# \. T4 \
( D2 I: k( @0 a" x! @. f# wto-report creat-credibility
9 B: ?1 p- }; I$ |0 Greport n-values people [0.5]  S5 K- f( o  z0 G- ]2 u
end
; E1 Z( ~8 R  z- i1 `0 l: q
- c: n8 @# H. u& o$ `/ Sto setup-plots
; ?# o+ A& Q# a! H, @* _4 j9 L  o: a% j1 M7 U
set xmax 30
9 t1 i1 O2 f  M( b5 h, X0 L6 z% X

$ f* Z; i7 w/ Z4 z0 F* |  B; pset ymax 1.0

' }0 S6 n1 C* D
  U3 }% s- r( uclear-all-plots
$ }  ^" b0 @: N: C" I

! ~  W+ s# \$ V2 E& Dsetup-plot1

3 t  a( @+ M& R6 F5 @6 _; c# x/ \1 t$ e# A0 h  Z
setup-plot2
* S; |# Q- l" q* ?# Z' M; I

, ]6 t) ?0 n7 i* I, bsetup-plot3

( v$ Z( ?/ h9 P  T0 z5 j. \8 Aend5 \# `# N- [* c- g: C2 z- k$ X! M
) ~2 V9 D5 \8 ^* I7 x
;;run time procedures
  ?! K; a/ `2 z( [( `
% q8 v8 |1 G8 t/ l7 Q# ~to go. T/ R# _/ _# A
% C1 I# K7 H1 \9 W
ask turtles [do-business]
# S% J) F6 S: Y3 H  H# Z8 R+ @
end
: a& Q8 c' z) m4 E/ P% j0 Y7 r7 B  R; q% Q2 i# h& C) T: ~" g
to do-business " a3 {) Y5 C& R

% P* D4 [% |4 l* a7 D! p) W
; m9 n/ t& x5 urt random 360

) ~; F4 ?. w- V# ~
- Q, \$ P, c: u9 G8 r* [fd 1

4 O, [  X" h4 n, Y' H8 w% }8 u1 M# X# S4 M  ]( k: H, n8 Q! N
ifelse(other turtles-here != nobody)[

6 O5 ^4 M" @8 V" Q
/ ^/ a  w( U' t5 {0 Mset customer one-of other turtles-here

7 |0 q2 w) F+ M  k8 Z* v8 Z. N  T3 I7 o
;; set [customer] of customer myself
2 \; l. E% Q! F! u0 G

. y# [/ F; K  [! k& z5 [' h& mset [trade-record-one] of self item (([who] of customer) - 1)
9 R& x& X0 O! e$ L" ?7 f[trade-record-all]of self
8 k( l5 E/ [4 n+ K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 T9 C' O+ N2 Q# l5 q* c
5 E! p. O- [5 M
set [trade-record-one] of customer item (([who] of self) - 1)
# O6 j! i/ h% W& |2 Y6 t% E[trade-record-all]of customer

+ h# T/ m8 F' }) ~6 n0 d+ {9 v
/ V0 ^# A4 d: ?- Pset [trade-record-one-len] of self length [trade-record-one] of self

: s9 a  W/ l3 z& h6 n2 Q5 Z; b0 \! T$ D: C0 q
set trade-record-current( list (timer) (random money-upper-limit))

4 l7 D+ w) g9 i4 _" R0 }3 E/ d) @# K4 g9 a4 }1 ]
ask self [do-trust]
/ Z+ p* j" y7 U4 I. w  J7 J; j;;
先求ij的信任度# ~( l2 e4 `5 a" J

( Z3 x$ O3 `; bif ([trust-ok] of self)* E) y6 U$ X8 d8 y5 s
;;
根据ij的信任度来决定是否与j进行交易[0 r$ X$ _; {8 C( B
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& s1 ^, c. C$ g  r+ |; x8 [7 N! y5 M3 q9 O
[

8 ~% Y/ C( b: w: b5 A2 ]
: O% v5 G. r! ido-trade

4 b4 Z4 H& y, B. ?- `4 u
4 A2 a/ R/ u$ Jupdate-credibility-ijl
" M' @& p. V  b1 l4 ?  ]0 c

: z% ?: k9 o% e3 h" D$ j! Aupdate-credibility-list: t" O/ K2 P& @( x: o7 Z2 U
, h  R: p. L/ h% C+ [2 W
- }1 _: n6 W) p; [  K
update-global-reputation-list

9 S/ p8 f4 n% b* C- g/ [. ^$ ~; Z" C3 |* t
poll-class

9 @  a( z: s% A6 [  T
& x4 e) ?. k- T# Jget-color

/ J. D! D; `- w: o7 w% V+ _8 l
/ ^- Z$ p8 l8 q  D( X. X( p, X]]( ~" l0 J( e* E/ T) e' U

1 X& |" x/ H3 C+ e0 b4 r;;
如果所得的信任度满足条件,则进行交易4 S8 ~7 M; S- i. Z, f# f9 C

! V8 V' t& m6 K$ d+ ]& _[

+ }# D* z" \% ?; @2 a! U( h* {* ^; G- U3 S- q
rt random 360
' B6 O3 a; B4 W4 n

8 X/ p& R; j, }, d) b& O& f! I& p& q" Hfd 1
0 ~; S# |+ N0 i$ v# E+ e' h9 S

  Y  m7 Y- Q% }$ h& j]

) V; r8 X+ I" z7 k# K8 U* O
" s. _- H7 O; K/ B) jend
9 s1 F$ u1 S2 j6 x1 X2 C3 _

* o* w9 W) S* `3 x: Xto do-trust
2 {, e$ D0 u. t# _3 c0 X1 A2 k, A7 Qset trust-ok False
# a+ q/ O1 \9 V; n8 ?! f0 m$ [. F# i9 L
" r; J$ l7 |5 X. t5 X7 |

" r7 b3 K0 d8 a3 ^& S: K7 t4 clet max-trade-times 0# c/ N& _  _5 g
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 o8 _# h4 X, c  t" }# C! ^$ @" n
let max-trade-money 0: e& m# Z5 H1 d# C6 X  L
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# A4 D) u$ L5 @# t# P/ Olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 m- Y( V9 n( X% H. ?: I& A+ r5 r9 W  E/ ~# ~* W

% G3 u% I, C+ {" Z" m1 s0 x! k- O3 y* Bget-global-proportion1 A9 {8 D. d7 I' e7 n, f
let trust-value( g+ m- e: Y) F. E6 w! i$ l
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)

- P; [4 D+ [. V8 Qif(trust-value > trade-trust-value)
* S1 @) W. x" c6 v: h* M* E[set trust-ok true]- `/ X& ?. J0 Y) z, P
end
" W! g- }8 C2 n2 W+ `0 o" B5 P5 R$ T0 x
to get-global-proportion
6 z+ B* i9 z, a1 Xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, r# |3 ]3 G% U' j& e& l" K[set global-proportion 0]
8 W% A9 F" f; }" T[let i 06 X; L5 ^( v4 m: f
let sum-money 09 E  J3 H( l2 ?7 r: K8 M* A
while[ i < people]: l2 d: p; x( V4 e1 |& k
[7 Z; ^" R: |# Q+ M4 K' M& ~, x* d, r
if( length (item i5 L# n6 x# W# W" |! N1 D
[trade-record-all] of customer) > 3 )

; Z) k7 l- s( J. U[2 O3 K+ j: E  b+ I9 g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  p  x% O& h- g6 p3 W7 U4 ~
]3 x7 b4 y: \. D; T- q
]2 d7 Z% I, N# A4 k: g  {
let j 0
! ~/ |& g8 B: X0 ~7 M, Ylet note 0/ b8 |' ]1 E& K3 W: z8 r, w
while[ j < people]/ I$ P# g- [3 @! ]( l
[
$ N3 j. r: @4 R' b3 F; pif( length (item i* e& p: t, M6 m6 l* e
[trade-record-all] of customer) > 3 )
' d! g  Z; Q5 X1 ~7 o# ^
[2 C% K& u  \8 w; N2 ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" B# ^3 H- b6 p  F' j/ A
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) O. A! J+ v  w3 c[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& E  |1 _! K8 E. y# w" x8 q4 I: H: e]
* I% |$ G4 t0 \6 ^]
5 g6 ?. Q, j2 j) @/ hset global-proportion note1 \1 x: o; g; n, O, o
]
0 a  b: n6 k6 b; c9 K3 uend8 r6 R* x9 k* F3 N

) c7 W' M- ^3 K+ Ito do-trade
3 p* v4 Y$ J- ^4 R! b! w;;
这个过程实际上是给双方作出评价的过程
9 ^  B* ^' b0 V# P  v8 ~8 x$ Y, [  [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 j1 e" N3 C1 ^6 t) Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 w# b( i/ B) O  u1 ]% f
set trade-record-current lput(timer) trade-record-current
& \/ T! A) U+ |9 O$ w& y8 z$ G$ \  X;;
评价时间
: e8 m* v5 u; X4 F; @ask myself [" U: K1 n8 ?" m
update-local-reputation& L# t8 A. E& t) q$ ^& {
set trade-record-current lput([local-reputation] of myself) trade-record-current
: q# c  q8 i& N8 f# G7 b]
2 [5 j/ K( t6 V. \; Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) N8 O+ T6 \4 W5 k;;
将此次交易的记录加入到trade-record-one3 u( a  t, Y$ p0 s1 F, [/ T' K( w% Y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 W% U* `' L3 Q1 p0 [
let note (item 2 trade-record-current )
0 @' Y0 t. y% i# xset trade-record-current
! [# |! p5 `% M- q" r4 E(replace-item 2 trade-record-current (item 3 trade-record-current))

$ F3 r6 N/ U/ }4 t# Lset trade-record-current
" j) V) E( ~5 ~, x) f4 H(replace-item 3 trade-record-current note)
% U% R, d6 e: A2 {4 B) V) c# I6 m9 L" M7 N5 x1 P- g
, N* N8 [, N$ U) M; F
ask customer [
$ Y% |( Q9 M. E0 p  M6 cupdate-local-reputation+ A7 `  _; |8 \5 ?) b% n7 v
set trade-record-current
0 e9 w' H: P% e, E! T! |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% ]' |5 s/ ?% k7 H]; A6 Y- R' H+ }3 a  {7 v

# [) C, I' ^# n/ B) p

5 F' P2 V9 s1 w+ P" d* W5 {9 kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; e  j- X9 O. |8 v) M
. {1 j& A' F. s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 ^0 v# o1 U! V" _8 w1 s, H7 G# X$ p; n;;
将此次交易的记录加入到customertrade-record-all
7 v% S& H7 x' T6 A# d* c6 M% Uend
0 E& |/ L+ }9 `' E" r; o2 @7 o3 Z8 a2 P) Y' L4 w- h+ m) E" n
to update-local-reputation4 [. `* Q6 K$ n9 Y" i: C
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 [" M1 ]& ~1 P
% D  g9 q/ X! f# R. V8 \! c2 k2 t+ X: O8 ~# N9 m6 L& ~
;;if [trade-record-one-len] of myself > 3

$ d9 t5 _4 e/ |3 V0 d- Fupdate-neighbor-total
: j, B# x7 }7 `% [4 v;;
更新邻居节点的数目,在此进行
; l8 [2 A. p9 Tlet i 3
) b7 _8 p% }' z) S  zlet sum-time 02 r- ^- b6 B% p
while[i < [trade-record-one-len] of myself]
! Y4 o% r7 R$ u, U1 h9 O5 c[: }! {' Y7 U; {" ?
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 |8 h; i. B5 ^& g' Wset i
: }5 K5 b  ^+ p% S) ]4 _4 Z; @0 I( i + 1)
- V' ?0 \# |3 G1 l0 ]/ G0 y3 w" m4 h" p
]; P7 N. T6 ?$ ~. \) E9 k8 O/ R$ n1 o
let j 3) g5 d1 U5 i- {2 j) m6 j
let sum-money 08 ]  y- @* ~$ L8 |8 N
while[j < [trade-record-one-len] of myself]
0 `0 P/ {5 a0 h) |1 m: C/ H) S[% g+ a# ?* E* |3 V+ s2 \- z2 p
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)
5 t) C* G1 Y$ G4 ]9 H# E5 v- Q* dset j
. ~1 l: Q/ {+ @* U: C- v, P0 |( j + 1)
; ?4 K9 ]: V. A5 G- c% v7 U5 N9 m1 B
]3 E4 F( w  U8 v$ X: G6 N
let k 3/ X4 Q7 Y4 A! u1 o2 {- `
let power 0! g; y) T+ q% h, \( B' \- k
let local 0, A" O6 {$ m7 ]4 h
while [k <[trade-record-one-len] of myself]
% F* L8 n% Y! Q6 }[1 m" \% h3 ^- K& A4 x" X
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) , ]1 Y# a1 Y' ?- d
set k (k + 1), J5 g: [) ?5 R9 B% N1 M) s
]+ ^/ y3 L% t( G  A: s7 |" `5 ]: P' }
set [local-reputation] of myself (local)( p/ a% g! H, W  f
end3 B+ h: ]! ^3 N) k9 e5 z+ w

) W" B+ k, B" H+ J! F( l& ?! K) Eto update-neighbor-total
$ W* E) M- [3 V2 Q' g" N
4 p1 }) J+ W1 L6 E' a+ nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( \9 D1 p1 t* s) Z

1 M1 B& C6 T* k& A8 R  _
8 O* y! \3 k& `% _
end3 I* m7 U/ I, f; @: F

1 |2 H4 J- z6 j6 cto update-credibility-ijl
: Z" g3 L. Q6 f4 U8 {
7 S: T" p8 ?# e, ];;
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。
) K8 p& h6 j1 P, rlet l 0
0 p( Y. w& Q4 S+ N5 [" Ewhile[ l < people ]
- `5 x) @6 Q1 Z) b1 m; h; J6 v' e;;
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/ H8 q* u9 {" d1 z+ x7 y! J
[
. D9 G! a  V8 q  L! I* @! M+ m6 mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ t/ G* A. F. _if (trade-record-one-j-l-len > 3)
* s, [  W1 ^$ J$ |* S0 }[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
) n4 `( r1 G5 f1 j: H; _* Vlet i 3
" n2 |& I; l/ Hlet sum-time 0
1 y9 Z, g/ M0 qwhile[i < trade-record-one-len]& t: E4 _' J' v+ u5 W1 [+ k* v% X3 `
[
. h% O, `* T/ ?1 r9 S; vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& Q  C5 ^7 k" k3 ?  G
set i
3 z1 {1 B, M. }6 m( B8 ~( i + 1)
3 E* H6 z: l* F* [6 u$ u
]: E0 G2 C0 N( e
let credibility-i-j-l 0
  @5 Z) h6 W; V1 \5 d, N+ n% Q+ V# G+ _;;i
评价(jjl的评价)
: |) b) v' H+ _) E$ {# Rlet j 3
9 w( U8 x; s- H% T' I) ?6 T; G3 j) slet k 4* b" k% k) R& Y# z* h
while[j < trade-record-one-len]
7 L0 t  [# ?" c1 [. U5 q1 d* d  }[1 I# n3 I, N4 c* D  n5 Q
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
) @" [/ K6 d/ b7 h7 s2 Eset 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$ |& ?. G& C
set j
2 J: I  p, o% K3 D( j + 1)
: s1 z; g$ f2 e( N. r
]
6 w9 a4 z/ Q: g7 O4 S7 Aset [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 ))
. {3 \: A% c" x0 [; q, _+ b# A8 I: K

( l  L& ]) _. s1 `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* A- Q6 a2 y3 R/ u
;;
及时更新il的评价质量的评价
4 U% H8 }) |$ N* i' Tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ u- t# R1 W' v' @8 `8 @3 g, ^8 k( U
set l (l + 1)0 t" s; b- t; v
]
& [# R' l4 k( s" Oend/ A2 U# t1 p  T

7 n1 f  t- n; |, d& e* J! k: Eto update-credibility-list# O5 q6 w) @: v- D3 j# j
let i 0# S9 ]6 k( ~1 E1 R, I; V0 R
while[i < people]
" ^6 l; q% ?* K6 E- }' A[
/ v7 `& J" B- \1 ?: l* T3 {let j 00 D/ h; l# m6 I3 }7 q
let note 0! p; l1 ]2 m( @4 M1 y. N
let k 0
: e# g' J) R& M; J, ~;;
计作出过评价的邻居节点的数目
! \  t8 S) ~) owhile[j < people]1 g$ F; r2 g9 J( l! c3 t: G0 s% R
[' E/ H* e, u& @7 M) C
if (item j( [credibility] of turtle (i + 1)) != -1)
  D% P7 F3 R1 G0 b3 X% q) X;;
判断是否给本turtle的评价质量做出过评价的节点
& y7 ?. G* ]& C+ ^[set note (note + item j ([credibility]of turtle (i + 1)))
  V" e6 k4 J, K9 c;;*(exp (-(people - 2)))/(people - 2))]

) l7 k4 Z2 D/ {. O4 f: Oset k (k + 1)
+ g! f7 {' \5 V+ w# _, H2 \]
+ p3 M# y8 R+ `& ~7 N/ R" m/ Fset j (j + 1)
' Q1 t) T: r& s1 ~. v$ q]# _- n4 ?: _7 |  W& Y; x
set note (note *(exp (- (1 / k)))/ k)$ p6 c* ?0 q+ |9 e0 G
set credibility-list (replace-item i credibility-list note)4 ?8 ?  P9 q7 v* Y6 ~3 J' R
set i (i + 1)( p9 Y* {' j1 x( I- ^$ d
]
7 J1 o5 N# [) E* T# h- Z) M' ^end: w0 {6 i! M1 ^0 M2 C: {6 Q) ^" E/ i
1 M4 N; I7 M( E1 r3 D* n8 P0 E
to update-global-reputation-list
: v6 E, O# f! llet j 0$ p# ?2 O3 d& V% F
while[j < people]
9 P6 b. O5 ^. c1 A3 x[
0 F, d3 e8 ]+ \let new 0
1 d7 r. F8 S9 T0 m8 V0 ];;
暂存新的一个全局声誉
" Y2 w) V" C+ A1 mlet i 0
5 u0 E: u/ U; a; d* Y' zlet sum-money 0/ W* i3 N: S/ u. I* @
let credibility-money 0
/ Y, {5 H) U" r2 ?while [i < people]
: z" b" H5 K3 y# L[8 K0 f/ o9 s& g0 t" O# t
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" B* Z# @! A$ d5 c
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 o# i; ]4 ^! d4 f9 q& g
set i (i + 1)5 G# [' a) m# T( k4 w% j
], o4 r+ }& q$ H6 ?- \- a
let k 0
# Q! S, k7 j9 }; {let new1 0
. ^$ u# b4 w9 K) @  [! Awhile [k < people]( C/ C+ O+ Z# B* J1 D$ t
[. D; \/ p' N; h  V- R
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)
' Y9 f4 B" G- ~9 F. ?- E4 Cset k (k + 1): f% U' b( @6 [/ ]4 B
]$ e0 t$ m7 S  n5 b
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) W$ K, ?+ S6 [& C5 ?% i5 C3 K' W4 F
set global-reputation-list (replace-item j global-reputation-list new)% n* A- V7 U# `: ?; w8 R8 B; q
set j (j + 1)
$ k4 \6 K- a& Q* o' s0 ^]
# x2 K' I& ^* S5 uend
7 V) l) C3 w" t: @' F9 Q' @; B* C
+ H& e1 i1 S" q3 X6 {0 f. m1 C: w. ?8 U3 l4 O& m
: t$ ]( u- k( a& [& W7 }6 Q% }0 h
to get-color
5 l, l4 i/ v! q0 a6 s- f, R: P" L' \5 e& i3 r2 c% X
set color blue

; `) u8 b5 @: }end
2 g/ S5 l) l( n1 |+ D
& p( U7 Z, G" f; {- Gto poll-class6 Q2 ]+ h' U9 N. g
end4 p7 k+ D1 n" h3 z( K" V" E9 n
  `  m, r) T% O. ~; w$ p* U8 H
to setup-plot1! f" X. b$ n& O" D
2 p/ b$ g# E* s8 v
set-current-plot "Trends-of-Local-reputation"

! B8 {- A) B5 r2 I5 k/ J
. `) C8 H) Z9 O* v3 s' s6 _set-plot-x-range 0 xmax
8 t2 O0 k7 C7 V: v

  u0 m! }' Z, M6 Yset-plot-y-range 0.0 ymax

4 k( F- C+ J" j/ b/ R$ z' iend
2 E2 a7 S  r1 S+ C: K- Z) u* x- K2 I9 a" n
to setup-plot2
! F( F' B( }4 j' ~. q) A4 n
8 Q7 [0 _: k7 Yset-current-plot "Trends-of-global-reputation"
+ X$ F# p  z8 x, K* i* V8 \  R

- |: x1 T" e4 Z* m2 Aset-plot-x-range 0 xmax
2 U+ }0 c, b# u, ~& |9 f
* v; s" R  ]) T; u! d/ o
set-plot-y-range 0.0 ymax
; d, _$ C" D1 Z2 `* |1 U
end4 D3 p+ e- A; V5 t3 {
+ f7 s6 I$ ~  [$ W0 {
to setup-plot3
& F; @" I  S/ }+ S4 ~& J# E
9 v# j) P- r: h% _set-current-plot "Trends-of-credibility"
; g0 q) l% O! g4 u4 S8 c* N

' x/ Q0 N" ~( b, `. w& ~set-plot-x-range 0 xmax
3 [: ?4 b# O2 c% `0 W" ]
5 n" @& E' M  G$ q: }, ~: K5 @
set-plot-y-range 0.0 ymax
% a# Z+ P5 z$ A/ N7 `9 N! ^, P
end# R/ b0 u  H* {7 u. U
1 y6 A. {' A% ?+ w6 R% o' p
to do-plots
6 U7 L7 i, o% l/ Uset-current-plot "Trends-of-Local-reputation"
3 _0 }! n7 T1 q; w, V) n6 t' lset-current-plot-pen "Honest service"
' d, @! X9 {8 oend2 G! H8 T& `" y' L) n

7 j5 D" U9 H8 K3 W[ 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 p# h. h5 N7 O- c/ @4 O  P, D1 C
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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