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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:) I6 q$ t. P% D9 [% J
to do-business
# K- a$ w6 s5 P$ l rt random 360
4 {# U3 P+ R: I2 T* ^: \ fd 1) c( c9 k# ~7 {
ifelse(other turtles-here != nobody)[
! C* ~+ Z6 w- t" x+ z   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.- d' P* g- D9 K3 s/ m. O
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 v, I1 t7 v3 F( u9 z  ]: |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& x; u3 n  c# e4 p( s6 M8 |   set [trade-record-one-len] of self length [trade-record-one] of self. q9 u: J2 S2 O2 t( |8 R- C
   set trade-record-current( list (timer) (random money-upper-limit))# _/ t, S1 c+ N) K$ T4 X
/ n5 N9 E% c! B/ B+ n; O0 P
问题的提示如下:7 [( b5 v0 f) S( y' M/ r" O. n
) j8 f0 s& L; H
error while turtle 50 running OF in procedure DO-BUSINESS/ P  {. W) @* ?. \. i5 m3 |
  called by procedure GO8 F9 F; R; H+ g3 g6 N+ b7 L# Q( E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" p+ G- a* {: I5 I
(halted running of go)2 r; b5 t/ z2 H% a/ q) T
, L  G% l7 D( a8 |$ S, ]
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~~
# Z, g) C) F2 }3 F' q5 c7 ~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9 m0 ^% y2 b" y" o7 o; _2 @
globals[7 w1 i) W- v/ I! {
xmax" S& ?2 v& }+ N# D' g: n0 ~4 s
ymax% [3 C8 j, A7 \( U' Y( j: c
global-reputation-list
0 I7 {, P9 l  S" B- q7 ?2 U7 `/ Y' b4 [: ?: Y
;;
每一个turtle的全局声誉都存在此LIST+ v0 z7 \" w2 e* r! z$ ]7 x
credibility-list, ^& d! R1 t) r! m
;;
每一个turtle的评价可信度
% T' H8 k3 C9 z3 j7 ?9 p4 f4 {  k' ~honest-service
$ H8 N0 D5 m  T* @9 p0 Junhonest-service- y0 B7 @. f! K5 ^+ u$ i2 `  I) x
oscillation
( H. ?5 C9 P: h: _  ?0 Srand-dynamic
9 l- Z$ @. w4 R0 p( s]! A( [6 R( X0 p* }/ K* x* |4 J
5 N0 H% N9 q4 V: Q# {
turtles-own[
6 B* k# p" }  h2 H& ztrade-record-all
3 m8 ~  x/ i0 C1 C  k;;a list of lists,
trade-record-one组成7 T7 M& i) \2 t' d# B2 ^
trade-record-one/ ^& v7 G/ p1 x7 L* O
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: @# e6 |5 c/ f; k. X) P; ^9 c6 T- F: L/ G& O( |; B
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
, Q; x! w, Y; ptrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]' ?' d6 p" {9 G: {$ `/ s
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
! P5 D# a! I. \8 M. yneighbor-total
+ L- l. t1 j' [: o/ \) N& f5 F9 S;;
记录该turtle的邻居节点的数目& {" C3 Y0 W/ ?- T# y; g+ R
trade-time
. F' R. k! I& H8 X2 n' q& K;;
当前发生交易的turtle的交易时间8 Y% _* a% v" @; Z
appraise-give/ D/ Z/ H; ?2 Q5 R$ A: b
;;
当前发生交易时给出的评价
/ C) S2 W# e) A5 Iappraise-receive
( X# j% `2 S% Z2 U; V/ u7 m;;
当前发生交易时收到的评价& `% p/ U  f. q1 d  N
appraise-time2 K3 y6 K8 S( e' H: U
;;
当前发生交易时的评价时间0 M' W1 y9 @, e$ t7 q6 u  U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- N/ \0 l/ p  M8 l; F1 E9 `! n4 |: L
trade-times-total
% R% E4 P* C  {4 a;;
与当前turtle的交易总次数
) K  B6 A; p0 q; ~4 j6 ]9 M9 j% ?trade-money-total2 Z# J; s; B( }3 M
;;
与当前turtle的交易总金额
9 Z7 P* p: Z. Hlocal-reputation9 \1 e* o6 N/ K6 Y
global-reputation& z# z& N! a* A1 z
credibility
% O" J  j0 q/ [( t* f2 v;;
评价可信度,每次交易后都需要更新
! r5 D& N# R4 Y% ~credibility-all# A, {# P1 h8 z' J0 z+ H; o
;;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
- I: I1 c/ P5 s0 ?" D5 H
* a' o% ]# r' H9 t;;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& v/ q: Y7 W! q: m( \
credibility-one
7 m2 r4 G& ~: D2 t;;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
; }  ?' c- {$ T& }global-proportion) D! q) o- t& m0 S; Y. N
customer$ I7 ^- Y$ q) e9 N
customer-no
7 r7 c9 |4 {* p* N8 i+ Htrust-ok
7 s8 D; t4 I" c6 h/ N* u6 c7 }trade-record-one-len;;trade-record-one的长度
- A9 k! W) H9 r! V- E7 l]) b4 a7 x+ `& ^2 N: {5 o8 D6 `
8 \: Z9 Z4 O8 m5 r( |) c! p
;;setup procedure  ~2 B! }+ Q. r3 W3 f1 p- b" m
% V2 n/ d! @* U9 x+ ?. v
to setup
8 l4 @- h$ ]1 J
1 ?! {/ Y# U* Z& }  r( r* c$ S! i# tca

2 `) \. q2 u$ ]( b7 K# L. x- J/ f/ ]$ Z( f
initialize-settings
2 p( E. _+ |# P0 ^8 A
/ D& A# O7 x/ L8 C
crt people [setup-turtles]

  q  \9 c7 {* @* Q
5 ?+ l3 Y" O" i) Jreset-timer

/ O2 T7 z+ `5 |, O6 C0 _' k. n% y1 ^+ o6 I: t
poll-class
! ~  l0 E3 S( }; H5 `( e
4 _, g) g' Q3 W. L4 F( e
setup-plots
2 b( N$ }5 _: ]6 N9 W
# Q2 k% S. M0 ?
do-plots
2 N# Q: A) s+ _+ J: g4 C$ q. r
end) l+ P2 _3 c' }8 C* l/ i+ X' w

8 i% V$ _" o* s  lto initialize-settings
5 r2 r3 W+ G: }5 s2 v8 _
- I- r8 C/ U6 _8 ]( }set global-reputation-list []

* }$ j' h; l, K9 Y7 n& l7 ~$ O$ Z6 k6 R0 \; U# Z
set credibility-list n-values people [0.5]
8 \9 g5 v" W; D3 x: q2 ^  S9 r9 {% ^
8 ?4 D3 t% b) v+ Y' l
set honest-service 0
& K: u( y' d0 D/ c' U, W
  z( A# O1 a" a# N
set unhonest-service 0

! @0 p" s* W% {0 n0 W  H+ E
& b0 B8 n0 c; @2 }- Aset oscillation 0
6 w7 h. L! w6 v4 Q% D" E
* @7 _/ ?0 m+ S
set rand-dynamic 0
) _3 O  q7 q; C, E0 X
end7 Q  Z8 E8 y" e! a* m4 e2 j

8 ~6 s3 r# z6 q, d! \' i6 {' vto setup-turtles
6 ~2 c1 T& }8 g7 k4 bset shape "person"
) l6 ]9 ?$ H  }6 R8 n! z1 Fsetxy random-xcor random-ycor
7 o3 N8 L* [& t0 b1 hset trade-record-one []* T* T6 X3 \4 L' v7 m/ Y: F9 E0 A

$ z6 U& X6 w4 C, dset trade-record-all n-values people [(list (? + 1) 0 0)] 5 \$ D- {" B* V3 G

, \9 S& {0 j) z; kset trade-record-current []
, K6 h8 W1 S" }' Rset credibility-receive []: P+ t# {5 Z7 ^% ]5 |
set local-reputation 0.5$ w2 Q+ L2 W0 R; E3 [( c4 p! ~) p; h
set neighbor-total 0) q5 ?$ d  x$ \& z6 O9 \( E4 h! f! N( J
set trade-times-total 0' m" L; B& r9 c7 E0 X+ \* s/ y
set trade-money-total 08 l; s+ ?" g5 U0 h' P
set customer nobody! D8 W: x( Q$ `/ E; B; N/ i
set credibility-all n-values people [creat-credibility]$ I* o) A# C! u5 @6 t5 s
set credibility n-values people [-1]8 }- D3 H- {! N
get-color
/ J  x& z: C( N) {
  M" X) D8 G" H5 x) B% K
end, j4 b' `6 O2 L" ^! e
2 n0 Q# |( `' o: o& Q' v, l7 W
to-report creat-credibility
0 g( [* g- b6 S1 b. j2 d  Wreport n-values people [0.5]7 J, ~6 X+ i; q. D: m, r
end
, Y/ ?% [) M+ J4 h  r; n) b
) i( G9 {3 A1 g, s9 o5 C/ E8 T& K4 cto setup-plots+ g) W/ {2 D" _- j/ u5 M

' a2 x5 e# u7 A/ A3 Q7 j2 o  y3 U/ Wset xmax 30

0 m* \0 |1 ?* ?: c( v' S. k4 I9 \% W7 r: S( X( D# P- [! H1 d( d& ~3 K
set ymax 1.0
9 W5 j: f2 |0 h& ]7 y( I
, z8 L# t0 H8 I. l
clear-all-plots
+ r3 S$ b9 ?; |; y: M$ Z. ~
/ [- p; w3 m; \
setup-plot1
2 M) w, s' x0 e, y/ P2 H! I- I
, E8 M( ^& ~$ B6 \- i4 X
setup-plot2

- }1 O& S# ?9 N- [0 C, g/ N1 t# |' C1 x. Z. b( _  O0 p' B8 t! x
setup-plot3
& T) a' T, e( R; n5 C
end
* `. c  {; S0 s8 c6 L3 s- _4 m! n9 s+ Q1 l% w
;;run time procedures2 D( q  s, c* L; m" L7 F) \

3 h1 ?! G# i% wto go/ u' P# e/ K% [# H6 b$ u. |
) \( d6 ~( p2 M2 U  `
ask turtles [do-business]
9 R3 T7 K' O4 E5 G3 j
end
: j  y' y# g* R0 R$ W  ]  _* [, d% ]$ N& e& W0 `* d
to do-business 1 m4 Y7 G# E1 H) i3 O2 O" `
" S' W" ?# K$ D4 U, W- t
! [" z5 P8 U% @& V% y, o, M
rt random 360
0 j" r# J$ n+ e6 _1 [$ r3 f

$ M& u" Q/ o. j5 W# q# jfd 1
. Y2 Z; n/ d  Q& C' B! g

# i3 ^3 Z# q8 i+ x) Gifelse(other turtles-here != nobody)[

6 K: x3 S" n4 o$ X+ Y* b$ \4 B) G; Q( n
set customer one-of other turtles-here

: B( E" F; m' h' A+ B0 f+ O/ _0 e; i3 O$ r6 g* M7 i" T
;; set [customer] of customer myself
9 a+ U  a8 h9 q( `8 d7 J, f
- Z2 f: E0 q7 L) a
set [trade-record-one] of self item (([who] of customer) - 1)* u8 f( s+ b3 z; o4 s% s/ }
[trade-record-all]of self
  V: v! k5 j6 E8 g& z  E;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. }: t# E7 P, H5 }
& g- _2 X% e! t8 G, M4 _8 _set [trade-record-one] of customer item (([who] of self) - 1)2 }/ \" U! {8 |& F8 n$ D! w: e# Z( X
[trade-record-all]of customer
* O2 X+ n# c6 F9 P( L) A0 X* T3 f, i
# j+ Y& C: V$ P  _% g
set [trade-record-one-len] of self length [trade-record-one] of self

: }6 ^0 g" n1 B+ l8 e$ @( D4 C" o; x3 h+ V9 m3 F( S
set trade-record-current( list (timer) (random money-upper-limit))
& b) k, C) X) k- u* T! p6 H; F

4 Z; X! v& m" t6 u- Z" jask self [do-trust]8 C$ c1 ^3 T% v2 q5 x$ j
;;
先求ij的信任度
% F- G+ U7 O. A- I9 e, Z8 w
# h5 y1 C: Z! o' `. N  Lif ([trust-ok] of self)6 Z! D& \: k: W" q: G$ v0 L
;;
根据ij的信任度来决定是否与j进行交易[
) n* q# I; {2 a4 ]1 |1 oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' M" B  f% ^8 l
' N& l3 t$ K" h9 G+ D
[
: n5 m8 m2 {: ~/ v) p

5 y- y$ ^. G5 Z8 cdo-trade

+ x8 @/ x( M3 U/ u- l- k
) R& J. {0 [( E) Z; x6 wupdate-credibility-ijl

: V; c; x# p8 B. a; q, g- z0 m/ _1 j$ m! W9 p+ o
update-credibility-list
( h. B' ]" L, }& I! Y! |3 h' s
$ R* m  g9 o6 p- q. F

, e) y0 m; Q: g+ k% W' |, qupdate-global-reputation-list
$ @5 M' Z7 c4 C+ A1 S) a( r
2 Z+ m. |0 h6 J  k
poll-class

$ Q8 F' ~* `' j6 x8 N
# Q) ^4 k3 ?1 q6 D- u( `get-color

3 c# L, ]: J' R
( ~4 ?& X1 `& L2 r) `1 S]]/ k" B9 p; v+ g* E. ~
" a; v. s0 \* B5 y: m! r5 o
;;
如果所得的信任度满足条件,则进行交易
4 ^) h! J8 B! S
/ Z; n$ V7 n9 k' p[

0 X6 v  E" Q" J1 ~# w6 Q' ^0 S) `4 c6 Z& ?3 B% n8 y# L# L: \
rt random 360
* V2 ?, {. c- |3 R4 z7 b

  x& u% @4 S1 F; V8 k0 dfd 1
- ?; n! q% k) x" U7 w2 \2 R( [+ {8 i
4 F% J. E. s+ G9 U1 ^- p) I  x; n5 h3 |
]

6 Y) i; q9 v3 O& [6 j' Q
0 K3 m5 Y6 C% tend

9 J* \- s' x$ n6 J
: I, q4 k8 s! o( b4 Qto do-trust $ ?3 g! F7 m5 H  v  K4 p6 y
set trust-ok False' l3 O$ M7 s2 L. O0 f% A. D! h1 d
0 B3 N, p, O4 v- N

7 \) {) n1 Y/ C1 Z# e+ x8 j* slet max-trade-times 0
$ o0 r8 G6 ?5 {" g3 Kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 B; Q4 \5 _/ t2 l2 |% u3 D# p: D
let max-trade-money 0
9 I4 S3 O7 J6 H0 r. Q  Uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 \, P5 l6 _4 |8 W! K' |0 \9 `
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 d( O6 y. k3 |! g  _* a: o
8 [5 M) h3 T: N( u" e

7 Y* B/ N, V0 v& `8 gget-global-proportion
9 i& D$ ~: \' K4 glet trust-value% v' R$ `3 J! V! ?0 R
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)

/ _6 z) Y' c% ]  q+ `/ q4 Aif(trust-value > trade-trust-value)2 Z, g- Y! }0 ~  A$ J
[set trust-ok true]
/ y, R' F( \+ q4 P' _end
$ `3 r6 b7 b; l- B$ x+ m" h4 s# N4 q
to get-global-proportion
: _, P1 I. k; U* S; Aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 ?7 Y/ x1 s+ J# G
[set global-proportion 0]) _, b0 ]/ S/ C0 U, P, X% _; ~% q. Q
[let i 04 D) n* O9 e4 k# C/ P2 u" g
let sum-money 0
: C& e7 G, {. Z5 H5 _0 t. Swhile[ i < people]
0 ^# z8 O0 i4 `3 ?[# P( q% d) G* I# u$ x. u/ k3 j
if( length (item i
$ Y/ N) T0 C; U# ^8 z[trade-record-all] of customer) > 3 )
% k' M: p, o5 U# J7 I  A+ T! O$ f0 A
[* a5 A% H  m! B+ W3 c) i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ m; D) x1 Z& U; J! |( u2 L
]6 K. w- Z: R& z
]
! ~" P' n) J, E& jlet j 0
; d! |- C4 Y& O! |) l. A% e  ^let note 0- i6 o2 S0 a* [) S
while[ j < people]8 ~: N. v/ J7 c
[
7 U6 M- @# C7 w5 F# ~  x- M& tif( length (item i" i( u- [# k3 ?! |# ?) I  Y
[trade-record-all] of customer) > 3 )
8 r3 ]$ X9 `/ `% N2 R: b5 f5 A
[7 ?" E/ b" w5 h( z5 T& k: u. q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& k4 q' T5 s$ \( Y0 a& P
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- z: `, f) u1 C. |4 y5 p
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 {1 t/ G# s9 n
]! ^% ~' E. c2 u% T% q& ?
]& x6 T- N; L  A" W' g; ]0 `$ T
set global-proportion note
; L. q/ l# D) M! |% Q]# B% O/ W' \: v- F8 K& a) N7 Q
end
! ]6 [' s4 p# f: C! \4 c( K. w+ ?. v/ J  p) b5 E
to do-trade. x. ~! J* i- R0 e" a
;;
这个过程实际上是给双方作出评价的过程
. L/ H, M' ?" q" pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) b) P2 K' O0 x, j; xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 R& Q( v$ S. P4 x. Aset trade-record-current lput(timer) trade-record-current
; s; G' z5 i# A" p" R9 n* M;;
评价时间
8 \1 q  N9 \2 x. _2 Nask myself [
) X. F/ v9 p2 T, O& C: p0 F9 uupdate-local-reputation  ~0 q& K, l6 a, b
set trade-record-current lput([local-reputation] of myself) trade-record-current
4 X- F; A* Y( X: ~2 ~& O6 P]7 G8 H% Q+ r% k: ]7 w
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) K' \) E2 Q# G; D3 D; H. k
;;
将此次交易的记录加入到trade-record-one: h8 J7 e' |# r8 L0 ^9 M9 E6 F1 y6 K/ z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 a  @- h& k7 c% u" t5 Q, _# tlet note (item 2 trade-record-current )
1 X; p0 Z: v8 aset trade-record-current
/ W6 w. p- I& X. y- d(replace-item 2 trade-record-current (item 3 trade-record-current))
! b, u2 t- B/ b; d& s
set trade-record-current
, e* Y' V8 x) E' e" |! X- H(replace-item 3 trade-record-current note)7 T5 {9 e3 G/ r& Y

- @% z: Y% o# Q2 m1 G9 g6 ]

6 ^; D+ R0 L: Yask customer [. Y! e8 [- {' ^$ {$ Y! C9 z- P
update-local-reputation
3 I% ]9 h$ w5 o& R/ S* x3 `set trade-record-current2 c% N& ~% G: `+ Y% [
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 S. @/ W3 }: Q
]; s1 j. M# m) Q( t5 z

6 _$ S8 W& U7 R! ^
% I( Z2 X! ?2 _( Q- |! K
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" f+ ~( Q1 e! h+ G- g

8 x2 ^# p3 k; @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); u4 F' @1 f; V: x8 D; i
;;
将此次交易的记录加入到customertrade-record-all
7 J$ d' x0 B2 j; w- E0 }  Oend$ I) F+ M) G3 F! i

8 f- \' T+ M. |; u  T  B  f5 Yto update-local-reputation  S% ]! n2 N) `- y0 `. p
set [trade-record-one-len] of myself length [trade-record-one] of myself
" ^6 @5 l, c4 o, a" I9 f6 S  T' ]: W" l" D

# i4 K& k0 _, c" h' H;;if [trade-record-one-len] of myself > 3

1 L) c) _2 |6 J! c, A1 mupdate-neighbor-total
1 Q  X. D+ C" S1 O;;
更新邻居节点的数目,在此进行- K3 }5 Z  V$ P8 e& _* G* \
let i 3
0 [% z3 J+ ^9 \let sum-time 07 m' w- t1 I: m( z+ P9 S# {
while[i < [trade-record-one-len] of myself]
' n# m" ]! k+ G[2 R3 O5 L& S; [" u" N0 N, I- s
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 ]0 {5 O3 p- o* fset i; p8 \& ~& p! T
( i + 1)

7 I4 h) r- I$ Y$ F7 a/ D], Z' V- J/ W9 h( [
let j 3  n% U3 y4 ?% t1 ~" `8 o% M8 \  o
let sum-money 0
$ z; e& d1 I9 k( c6 f+ m2 Cwhile[j < [trade-record-one-len] of myself]
* C. U# k5 I2 L9 d7 P3 L[( ~2 @7 v; o( D% I& x
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)- Q% l. D  w9 A, @1 H0 P
set j
+ _( o$ }* O0 i2 t6 z( j + 1)
" \* J; F+ B8 w; Y  d9 a
]
5 ^0 H9 A# _# N! _! c0 S9 i7 Nlet k 3+ n; g, H) {$ @1 k1 }
let power 0* x* f# H8 w6 R* O1 w5 {5 g
let local 0- l+ H5 u) y* ~' v. `- D
while [k <[trade-record-one-len] of myself]# V/ J' j' X4 g: w  }% Q  v
[
5 K# {  x) W& R! {3 |) t9 A3 V2 pset 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)
+ K* C( J0 R2 z4 lset k (k + 1)
0 h: G. W  c7 Y. b0 a]+ v0 y4 p7 H  G3 L# m6 z
set [local-reputation] of myself (local)
$ C6 {5 x) j9 f  j- q3 qend
8 P' I5 K& L* n% \6 [: G  V: E! C: p2 t( m6 |3 f3 z+ L
to update-neighbor-total
/ U  W0 S* ?0 K' ~" d- Y- S) g/ _0 C/ o, [" N6 n0 q! d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* S9 `; N& |1 J

( a7 s( ]% W8 k! M
2 b' p2 W1 x: u8 ^
end. O, H* f! n: J; c% i  w3 \( `& }

7 f: ]( `1 O3 I! U5 M$ ]to update-credibility-ijl   A1 I/ U7 P9 @" H# ^( K! b5 ]$ G
  a3 r# z' E: J5 q( H! G  U, n
;;
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。5 z: v  M) |7 o5 c
let l 0" D( O2 H& W$ Y
while[ l < people ]
& C: q. z6 `$ T# N2 U/ M;;
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
% r, B" D  r- S) g! ~/ ]# x[- f0 q0 o4 L) g2 e( @6 [- M
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 ~1 C' I3 T) zif (trade-record-one-j-l-len > 3)
; g1 e4 ], z6 T- W# x6 x. {. 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-one5 \4 q" v6 b8 t6 X) R& W+ @
let i 3* Q- |8 |% r5 Z6 b' u* J
let sum-time 0
% G# M+ E) m$ k' W6 d- o5 Q2 `  owhile[i < trade-record-one-len]0 F9 ]# b! N- c8 k% c. A
[! F& ]. o  h9 `& Z) o' n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 @! q6 u7 J" f0 x6 W) ~; \: `
set i$ S4 k, Z7 c$ n) K
( i + 1)
7 T3 q# T7 C- N' w- i$ W
]; `5 n9 D( Y! q
let credibility-i-j-l 0# m# t; Y4 _" \( M! g
;;i
评价(jjl的评价)
1 A: ]& z6 T# ?' o3 ^let j 3) o0 l) z5 q+ t$ d4 \& B- M; a
let k 4
4 _4 e! j- L+ l* A0 `7 e8 |while[j < trade-record-one-len]
" H1 f3 S2 y3 b, D[
: J* N# D3 y3 X  t5 j/ M' s/ y9 Dwhile [((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
( V# D$ Y% C; |3 b9 T4 A+ V3 I4 `9 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)
$ h! x6 h2 t0 q; g. tset j9 i( U2 t1 h% }  A9 D: H, {
( j + 1)

# [; O* `* N! _$ t; M7 m! p5 O]
' R- J4 f  k, z& n' a# T7 Bset [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 ))8 ]" _2 h9 B3 P' n* k, V4 C$ M

7 ^9 K) Y' s% g% c( s' s* p

0 u. x5 e5 ^& D5 Q5 blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ V% n0 }$ k9 a+ K  M5 p2 O' E
;;
及时更新il的评价质量的评价
' C, E6 a0 F  }* q: |: J/ |set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" C. R2 F& y4 F9 P4 U
set l (l + 1)
, J5 _3 s+ s2 A& O8 a: h]. U! B- e2 w3 @& i
end
6 Y  |1 N/ I% y; i# l% V
- S% P, H# a; S, f$ s7 ?0 g% dto update-credibility-list* [" Z0 k2 r: F: w0 M
let i 0
6 p5 |- M$ r6 L# n9 twhile[i < people]. p$ ~" u+ W6 }' }' b5 {
[7 B0 v4 ?& H) d: s& r$ K3 W" f% C
let j 0
+ F+ q% o  s" a: M; z% z2 J! Vlet note 0
) j1 g! j8 {( z$ w8 ilet k 0
/ O4 N2 j5 g: A;;
计作出过评价的邻居节点的数目/ z4 `" t& p/ D
while[j < people]# L0 W+ _. B' n1 p5 M+ k( q% W/ l$ p
[( }3 s0 G0 Y1 ^% r
if (item j( [credibility] of turtle (i + 1)) != -1)
8 [+ K9 @6 _$ d% W;;
判断是否给本turtle的评价质量做出过评价的节点
1 r& }2 r1 Q* G9 l[set note (note + item j ([credibility]of turtle (i + 1)))+ {% L# `4 W, Y; }  A& o  M
;;*(exp (-(people - 2)))/(people - 2))]
& I( s* r5 }8 }  l# ]# @
set k (k + 1)) {: V  r# |1 I' R$ m8 X
]# }7 r# |4 j; D8 s5 f3 I! k/ ~/ u6 r
set j (j + 1)8 t7 H- b& J9 _$ F& \. R. {
]
" B( D% A' V4 y7 Q1 x! x. ]( F5 jset note (note *(exp (- (1 / k)))/ k)
5 y9 c! n, x1 `0 ]) Bset credibility-list (replace-item i credibility-list note)+ i: \) A7 I$ R5 L* i4 n0 O' s
set i (i + 1)7 B: M+ g8 z. l. d) m
]
+ f; A0 `1 o) B" I7 q* Lend
- k( ?  G( E! x. R* a& _; j1 V
; Q. U! ?5 |9 c% B$ }, E* _( Qto update-global-reputation-list
4 C  M; l7 n2 P8 K' F+ rlet j 0/ s  x$ ?& z6 v6 {2 S& {; U& B
while[j < people]* g6 p7 ~7 S* a+ R4 m7 F, d1 P
[0 g7 G! ?1 k% E. i
let new 0( m4 }: {" E( {. \9 Q7 F" f
;;
暂存新的一个全局声誉! ^8 G0 Y( ~+ s8 ^
let i 00 D! d* r$ t' `+ ^1 ~4 }
let sum-money 0
) G4 M  R: F. V6 plet credibility-money 0
* Y" g3 g" J6 L2 ~4 |& Twhile [i < people]6 _( @1 H6 S0 r5 [5 i# j9 P% ~6 B
[! Q% M6 Z( C" g& X* G9 R- n2 J! R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 ^3 J$ t' S8 m
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ |& y. i, n5 ]9 D: f' dset i (i + 1)
7 l: t  T% j4 s]1 F  i- R( ~$ q8 }  l4 J
let k 03 t# m, w* u* r9 C! [1 Z  f
let new1 0/ h) d* L; w) E$ d; y
while [k < people]
# b, m8 ^% Q4 K& Y[1 i# P  l, W( ^: C( y0 y( I; e: e
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 g7 z. Q0 ^2 i+ w& z" k
set k (k + 1)$ T) B+ m# K, z0 ~! c" E
]. D3 p3 Z, F2 k' Q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 n- g" D* @2 Vset global-reputation-list (replace-item j global-reputation-list new)
* @  ^" S& C( r/ bset j (j + 1): q- h2 R0 l: s- v5 u# A8 z
]
. E+ G# i! Z& N3 [* u7 N- Qend
1 `; X, F3 O* N5 b; G( z& O/ i1 s
4 W9 e# {: m( m" h( w5 k! \# B) t

  v" |7 Y& @- X9 g, c; Pto get-color% }. j$ A8 s8 w7 I! S% T
3 D/ j& K# g  H+ l
set color blue

" |2 @1 e  {% Y7 Eend2 j, ]6 H' k' O- ?; t! T$ m& T

; f) f4 t/ ]' R* tto poll-class; B, O5 s' [5 ^5 w+ z
end
" L3 z4 U! k# {7 N! l! _
# z1 M$ u& R, v- `to setup-plot1
0 t& B2 i9 k5 s/ _8 |
* D. l$ g4 e! H' W7 V4 C6 z& ?  Pset-current-plot "Trends-of-Local-reputation"
; z0 ]4 \. A+ B2 w

% n! Y4 }$ G- `1 @8 c* L8 u  hset-plot-x-range 0 xmax

% G4 ~+ m2 Q# }& {6 }
6 Q0 m! z  a; F' C/ H7 Mset-plot-y-range 0.0 ymax

! t, s. |0 _4 ?: J7 t) P3 Zend" O0 ~- i1 a* A/ x7 B

1 M$ G% x2 c4 ~* W7 G3 \1 cto setup-plot2
: n5 o' a0 f5 Y$ e7 [6 a7 E7 Y4 v/ Q# j5 ^
set-current-plot "Trends-of-global-reputation"
% w; e" {- Y7 V3 n) A$ s

4 i2 a/ a3 @# D( o- G6 r5 bset-plot-x-range 0 xmax

) S, _: ~# F* Z" ]! W
2 t2 O' t( E9 g% }( tset-plot-y-range 0.0 ymax
. D5 s  w+ O1 r" a& B4 w; F
end
" }" T0 F: Y' O+ A1 W' }2 `' U: Z& Y
to setup-plot3" s5 f$ W1 X6 L, G
" r- W/ {. m/ l+ a/ c& v
set-current-plot "Trends-of-credibility"
  o6 x5 F0 n9 p& l0 A2 a$ A

3 P* S% ^7 y  T! W4 d# ^1 }8 Yset-plot-x-range 0 xmax
# A4 {" M$ Q6 B  c" C" w

+ k' A: @! Q* L& f) \; i6 k' H: jset-plot-y-range 0.0 ymax
: v2 v* U& N$ H& n$ v
end
* U: \) s. n. o* v# U0 [! L/ u* x
to do-plots5 \$ }2 T& i! M! |2 a4 m+ c
set-current-plot "Trends-of-Local-reputation"
/ i! Q: ~5 r. [, qset-current-plot-pen "Honest service"1 s0 n) A3 y- `& \4 v
end
+ M9 \# d5 V0 r% l0 j7 m+ m  E+ u. I1 J2 ]! Z# N1 V1 I& 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." i9 T" Z/ V" n

2 o4 v' p8 p1 a; j# y* d* i9 n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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