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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:" _" j3 _8 L9 U+ G& c0 c! A
to do-business ' x1 ]+ K7 B; w- T! f- i2 v& _- N
rt random 360  v. |! |$ a3 ?) F1 j  I
fd 17 Z! H3 ]( _# g4 M" [
ifelse(other turtles-here != nobody)[
- Y. _( k0 i$ `   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.
" ]$ V4 J* V) f5 Z6 u- ^, B- k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 y3 {# t. M+ x  D& ]' t, X- ?8 {' @   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, w, F" |: E9 B4 ?   set [trade-record-one-len] of self length [trade-record-one] of self# q: o( f2 W7 O! z) B% Y
   set trade-record-current( list (timer) (random money-upper-limit))
) D* ^7 ~  b( t+ `
# \; K1 i, s' c+ l! f问题的提示如下:
2 d1 {' A4 g  i' |  Z
# K: G: z' f0 T" gerror while turtle 50 running OF in procedure DO-BUSINESS
$ @  \( c; G* Q1 `/ S1 M' u  called by procedure GO
8 b# r* }! x* x# k" o0 F+ xOF expected input to be a turtle agentset or turtle but got NOBODY instead.5 r$ o) F& f- ~9 E% {
(halted running of go)
% T$ b% W1 L4 ^  u- h& A/ a% p/ H6 Y7 b
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~~' t. |6 b# C; c9 r, O, t
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7 P: \& u/ z1 u, V$ t
globals[/ E9 U/ r. ]6 c$ K4 y8 P
xmax0 \% i$ j; O7 {1 T1 c1 O. v
ymax4 E* R) x  f$ U  g
global-reputation-list# r: ?" d5 D5 n. [! W4 a

6 v' ?2 S: s/ D1 \9 H8 b5 h;;
每一个turtle的全局声誉都存在此LIST* A2 Z+ N$ o! f* G% o
credibility-list$ p! y% @! g+ P/ x0 U, R0 j0 x+ v
;;
每一个turtle的评价可信度
4 [, m3 t3 O0 y$ F4 G0 [* }4 k; B; Fhonest-service
% J- n! {: ~% _$ o( X% X5 punhonest-service1 u# [  _& W+ I% K
oscillation
8 q6 [' }# F/ q$ f  ~rand-dynamic
3 m: S" z! l  U5 m/ s% @]
( Q0 m, w. O8 L8 X6 s9 v- o
  r6 f3 R0 ~* D  O/ |2 vturtles-own[) s: ^$ {; L# Y3 S5 b/ r1 P: ~$ E
trade-record-all
. e& V8 R: z4 L, S;;a list of lists,
trade-record-one组成
. I, A  Z: J, ~* _" J$ _. ~trade-record-one1 p0 p% j' u3 U% E& ~
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! Y* X% o* x) d8 U1 M5 K; Z7 I0 k6 \6 G0 A
;;[
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]]
7 I0 q; z( Y; ?' a$ B+ ttrade-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]
% o. i8 `  w: ]  k& O8 B' D! Y0 Kcredibility-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% f( g) E. c9 q+ |: m' r
neighbor-total
+ c9 d' d9 C7 _( \; [% J; B;;
记录该turtle的邻居节点的数目
! u- @) g2 o/ R' Ftrade-time
/ b2 W4 D# u$ ~8 T;;
当前发生交易的turtle的交易时间! R. `# Q% n1 ]! b4 p' q. L
appraise-give5 p' O  l0 d: j  h. ?# b; A% Q
;;
当前发生交易时给出的评价
# B7 a8 c+ I: d1 T! dappraise-receive+ g/ ^, o: T/ u/ a6 A; R" L
;;
当前发生交易时收到的评价1 N& p0 d& z! P, V7 A) E
appraise-time
* Y0 U2 {4 _  }- \;;
当前发生交易时的评价时间
- z: `& r% ]( v" I* \local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ t' @/ r: R) I# s: @
trade-times-total
1 P# H, b& [# f* ];;
与当前turtle的交易总次数; \2 k. z  j. Q- S  w
trade-money-total- v. \6 \* w/ @' Q, v4 A) C5 S1 w
;;
与当前turtle的交易总金额
6 n; |* N4 I/ Y2 l4 I/ e3 v/ Glocal-reputation
$ W( ?4 Q) v. i* x: X1 {global-reputation
. x* [4 _$ E  `/ |  @credibility% b- ~  z8 O& e4 q! Z
;;
评价可信度,每次交易后都需要更新& n1 s6 ~4 X: M8 V7 R/ S
credibility-all
5 d) G: y& ^5 r: R;;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: R- |9 Q. F1 i) m( g
7 b1 {7 R) R) g2 b. E5 n4 |
;;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+ l- i* x. j& k
credibility-one, t# i) K, A$ |- C
;;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* [4 c, n: E5 I3 y( e" `5 s
global-proportion
6 F$ B4 R' X. v% o4 e- s- N! x7 ecustomer
8 I; n6 X* l. L: Xcustomer-no
3 F; n7 M5 M' {% z* b4 Xtrust-ok5 J8 J8 |, c" P6 I" {0 c6 D
trade-record-one-len;;trade-record-one的长度$ n" \% H6 ~1 N$ s; W
]& K( ]+ Z8 Z* F) C9 A
. A2 v* T7 \8 u7 h6 q; D
;;setup procedure
1 J+ g! S8 O# s0 o. ?  I$ C3 W2 h0 a- b6 H: X) f* w
to setup
0 x( K+ ?* |9 v+ j; y7 f" m
/ F; W; o# j2 k1 l0 Xca
0 p8 x* @9 V' f0 Y

/ w# E( G+ c$ X% z& F/ _% r% qinitialize-settings

* B; \5 x" i$ S8 C# r4 _$ f  A( ~1 E- L( L, t( @
crt people [setup-turtles]

% A. _" {5 c! E, B  u6 n6 T. r( r3 {/ F" l' ]* E& S
reset-timer
) ?: j, W# m# J  l+ h, ]
# `8 Y3 ~) Y* v1 d
poll-class

( d( @% M. {- t9 A& K4 p7 u" o- v3 [" d. q
setup-plots

, D2 n/ O; p% f( e0 w% f; u7 ]  G
do-plots

8 @7 V( r' j3 ~$ mend
1 w( E, I: _* e) O/ o
. z7 ?0 M8 J1 ?3 }: n1 j% B' O4 C4 Ito initialize-settings
/ U. U, A" N1 e& l8 ?
* k* H0 `. S( x/ {7 u# b$ O) oset global-reputation-list []
( L+ s" J6 `. t! |- c4 v$ ?+ B
7 g6 {; e" N6 n* q
set credibility-list n-values people [0.5]
9 r% q% R* q* k( u; ~- `

% O. g, {8 M3 W: O) ~% Yset honest-service 0

8 o- s9 A* o- d" k: A; [& u1 G, S/ @/ C5 b6 x  {9 I) `2 T1 d/ {: I
set unhonest-service 0
5 a5 I/ @  I1 k2 v( d, D+ S9 y; @
! c, v  h2 j$ u- M; Q% Y& p
set oscillation 0
( S/ f) m( o- u2 Q8 Y$ B
' ]0 E0 j6 m- t# Z1 n
set rand-dynamic 0

- Z* k' ?; x7 h& @5 Eend0 l0 z+ D8 H8 K- C; C
3 u8 L4 }6 u; z( S/ m/ f
to setup-turtles
  b2 H6 ?  P! H6 {+ k$ M$ k3 jset shape "person"
: C4 W) F) S. ^setxy random-xcor random-ycor
6 p/ @  o  ?1 ?- p: P2 p5 Tset trade-record-one []
8 |6 s5 H- L9 W1 F' R. Q

* \4 f8 m; B" Z; o$ }set trade-record-all n-values people [(list (? + 1) 0 0)]
% T! \, f  O. k) `: R0 z+ W

( e# `# w2 A9 i1 Dset trade-record-current []  B0 G+ F) y. \
set credibility-receive []
( x. }5 k; W. q& B5 q/ q# F  Eset local-reputation 0.5
7 r& ]+ X+ d6 _" p) z* K+ Uset neighbor-total 0, ?5 g+ G# ]# h: @  \. u
set trade-times-total 0& K! _. B2 S3 S6 E' w
set trade-money-total 04 a( k- `& W- z. ~: N
set customer nobody
& r* J4 l6 w2 {; b' g0 Rset credibility-all n-values people [creat-credibility]
. O6 S; p9 @  M; r) A( W& Aset credibility n-values people [-1]
2 d# a$ _* m) k" X0 L) hget-color; I4 X9 z" r- B% U( x* U/ F

3 ]3 L) O* X! E8 s1 Wend
$ j/ ]' @& W8 z  r3 C6 `& e% Q. F
to-report creat-credibility# ]% ~7 O6 L/ A  ]8 a7 w
report n-values people [0.5]. E& G1 p, v6 I; z9 b6 v
end
8 D  w5 M5 S$ Z. i5 h
; U8 q1 `7 e* f& L2 @+ ato setup-plots! U, ]. D! M7 s, [4 l" d  n4 O, v

1 _7 ]  @- e% O2 {2 X, [: `" bset xmax 30

- \7 Z5 A& l( k1 m, l
2 B# [. e; F6 [: Nset ymax 1.0
; P6 h% H2 o" a3 a

$ \+ ~4 g0 Z& _+ o: h% @9 E3 Aclear-all-plots

# n0 u' Y4 l/ j* s4 k( Z, C
& f8 H$ z% o5 w$ bsetup-plot1
* H5 o/ H+ C* G4 h! D( a" D" m

: j& g, i9 {$ c1 d2 g1 dsetup-plot2
2 ~, O6 W+ f3 u' K' c6 Z+ {5 f
& V' F5 I$ O0 Q) B- W& c: D
setup-plot3

# e, b  q; t) J0 q- ^7 k& F1 b; [# Dend
- q9 @6 {! i- j/ F. \3 d( X9 g! d9 r& c
;;run time procedures
2 @0 Z3 Q1 H# B& y$ s' p$ i* ?! Z7 E  n# ]# O/ T7 _2 J! O
to go
& U9 J$ Y  S1 {, S! u. A& k7 H+ d  {) Q" L7 j# _
ask turtles [do-business]
* D) _+ Z; N: ?9 B) v) h5 u
end  R: @% E; O* @8 e% T0 ]
, w/ R. A# y  U6 F# v
to do-business
4 k; l" A# C. ?4 K5 D
9 s: G( j. P7 g1 |8 n1 P6 P! q/ A
! D; ^( @3 W" M$ c. ?5 a. ^' _
rt random 360
6 K9 q' Y% A8 X$ _- {

7 t. N8 ?) i/ I4 `0 {/ {fd 1

2 A, [( C3 l" p! N+ o2 w* ]- C  @2 V0 m$ T& @
ifelse(other turtles-here != nobody)[

) P3 F" t. m/ ]! A9 f0 h$ b4 b$ }' v% y
set customer one-of other turtles-here
/ u; b: |2 }5 [) q
# F4 ~; L) ^9 {' q
;; set [customer] of customer myself

9 u1 I$ ~6 j& |: u( [7 U: D6 J4 l: [" c8 T
set [trade-record-one] of self item (([who] of customer) - 1)# @/ S# {: L: b- [
[trade-record-all]of self9 e2 |7 k5 }: U$ E' [$ t) s/ u9 A5 Y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& {; ?# }; f; @" j4 s( _3 x: o
6 Y6 L7 s; K* Q- b% {* }4 rset [trade-record-one] of customer item (([who] of self) - 1)" B$ m1 @" v+ Z6 K5 V0 H+ {
[trade-record-all]of customer
; k$ ^9 Y: ]5 v0 P

- T& K# e" K- Z8 h0 Wset [trade-record-one-len] of self length [trade-record-one] of self

7 I& d4 A& y$ ?* Q) K! A4 ?$ M" L; c; T! b* n' _
set trade-record-current( list (timer) (random money-upper-limit))

+ {. v& V7 T! z, {. C) G& t! Q9 K; i& [+ Q: D
ask self [do-trust]
* j, `  z% E  E$ Z+ T;;
先求ij的信任度
+ e1 c, o/ [% V! d0 E, O- d, q* r
if ([trust-ok] of self): |. H7 d9 I# }+ M/ o" H. Z
;;
根据ij的信任度来决定是否与j进行交易[
0 m7 e  C3 A& z* P; lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  w) j6 U0 H) h* m; F; o" [$ Z
. F+ F) j1 b# D' Y( K[
3 }0 q2 o0 e% U# S1 j8 M7 S3 ~
9 ]2 T' s3 c( S
do-trade

' }% s9 e/ j9 a! h1 Y0 B4 v' T' ^; P9 G0 O- p. U
update-credibility-ijl
; e. b- f" Y$ X2 G
3 U. l5 E) p# E  A! Z/ v3 A/ ?/ w
update-credibility-list
$ N0 u! o  }! R, f9 X6 J
3 k" z/ C+ U5 y" k% r
6 x6 }7 s6 p3 J! R: Q
update-global-reputation-list

- ]! f" |) K. [' @4 h/ [' j
& I. e2 X9 m9 _3 ~6 Y; mpoll-class

- O! F% T. `6 C6 H* L- a* b3 Q( s) |$ S: s/ T" E
get-color
" Q9 {) t+ m3 R1 H9 E! B
  {' q% Y1 v( \* |
]]
& f) `' @: n, J0 S4 _+ Z' d  ]: e5 K) L7 n) ~$ `5 C
;;
如果所得的信任度满足条件,则进行交易0 C% s- r  p6 G% N/ n$ K) l6 r+ l

5 v7 v* p# A8 b' }( L[

& S' p' L. N3 Y0 g6 {& W- j
& Z( f2 u$ k2 C/ P$ c6 \rt random 360
1 B8 {  x6 Q; k( j2 o
5 b: a; D( [+ x- G. d4 H
fd 1

9 ^4 j( _5 D( K) [9 z7 v; l2 A: a7 W) R
]
0 K6 _. P' |: O2 u6 y" S
, m$ r7 ]" B" Q3 g, l; d+ }
end
2 ?# ~" T3 [. ]

7 t. J8 Q- z- Tto do-trust
. w* B. [# z& \; F$ Qset trust-ok False
  o  m: ^: f- K! j: e# M3 O- f7 i& u; g- d2 p

0 K: J* {3 u* glet max-trade-times 0
7 J9 i5 s) c+ p# ~5 Cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ Z" M$ d. w+ A8 Flet max-trade-money 0' {% {3 a1 x" F& A, w# ]
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; E, y4 r. R+ H7 ]  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))
6 H: F6 M% q. n  U  }9 k( s2 p" L( R3 [- o! |/ Q8 b& P* H

  f2 K( g) A! J1 yget-global-proportion5 H9 n/ P' t! h: w; n- j
let trust-value
- J8 r6 J! e) t- ]! Ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
+ C" X- C. _/ H% b# t3 m$ I+ d  D& `* s
if(trust-value > trade-trust-value)
  e- I7 j* u0 P* l7 y# f% r[set trust-ok true]
( T$ V! M8 f& N: Q# ^* e7 pend* u& q( t: H2 l

, C4 b& M  q& ~4 c+ ~to get-global-proportion
% H3 ]( g$ S2 j1 rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 B4 C* C$ G# j# ^
[set global-proportion 0]  ?) C6 r. @2 J( m/ z# R5 q
[let i 0, W, N  z8 v9 @& B6 g
let sum-money 04 t9 O2 \/ ?9 _+ Q& G; S( A7 v
while[ i < people]
+ S' \+ V: [: L& k/ q- Z9 x[  D1 n2 z1 f4 u) W
if( length (item i1 k% o  c+ _: ~6 F6 E, ]
[trade-record-all] of customer) > 3 )

4 W' b; {; P( \' v[* s, }( S% L. B( F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- I, ]0 [; g$ A( _
]
/ `5 V  w" Q# E% Q7 x]
6 N4 y* `% L6 h7 U+ D* Zlet j 0
* V: h  {! t' [. ~8 P& b+ J9 Mlet note 0
% b6 w+ r& ?$ Cwhile[ j < people]" a) P7 N, j+ g, B( p4 U  z
[
9 C5 D# T3 B9 e9 k* uif( length (item i( c% v0 \2 B1 ~+ k+ Y& I
[trade-record-all] of customer) > 3 )

, {$ y5 L, q0 H# p) D+ |[
9 W3 l0 Y+ w6 k: r3 ^: Yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 V  g2 V. F1 i2 P[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 o4 X+ v9 Z1 s9 V5 h[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* C! K1 [* }: B9 e4 t3 F
]" i* \0 H2 m) J& n
]
% W  s2 g3 Z, Tset global-proportion note) ]' k& R5 x3 z; h, X) {* q/ y
]) O" f; m- z' ]9 N+ K+ e2 u6 b
end9 d1 u& o6 [+ p, V6 k* f

$ N9 I' D1 }6 R- Y, sto do-trade
" ]7 b6 U$ S7 w' w% }3 [* s& T# d;;
这个过程实际上是给双方作出评价的过程
4 y+ o+ Q4 h8 pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. q, d: H( a, {# y9 J. P9 b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; b  W5 g3 k! m) |9 Bset trade-record-current lput(timer) trade-record-current/ Q, |, ^* y6 {* b" z9 e, @
;;
评价时间$ ]) e* Y& g% l; w6 D
ask myself [$ G; k. b6 A' N4 t
update-local-reputation
. G  `* r- ^7 f* @4 ~0 e7 Sset trade-record-current lput([local-reputation] of myself) trade-record-current
/ H7 B1 ?# A4 R) Y/ M]+ [: c/ n: h  C- t' m
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 |) @2 |& g3 C( V
;;
将此次交易的记录加入到trade-record-one2 d* }" F, D+ o* d& d! d% d: A
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 y7 r4 E5 ]# R" g7 N$ V& ^. o% b
let note (item 2 trade-record-current )
7 q$ \' B4 I$ V+ Tset trade-record-current! N$ R5 R; a4 \* @( t1 Q" V9 P
(replace-item 2 trade-record-current (item 3 trade-record-current))
* @! }; j2 O5 o: @$ o0 F; U4 a" c
set trade-record-current
3 T- C9 `5 {& z. a* Q(replace-item 3 trade-record-current note)
3 x% ~8 ~& A) {2 k. |9 L7 [
) T% ?. P" y' b9 L5 z

/ ?- r4 \$ Q+ V5 l$ A) yask customer [
# q' r1 |* K  iupdate-local-reputation
7 [+ I7 Q+ x/ f" ~/ K5 N; cset trade-record-current
- S/ y' ^6 B  S# \4 J+ W  h(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 n( J2 e1 A9 E& Q]
* W7 V& y2 Y; b/ `: r  O2 g0 D( ?7 ~/ Q" j5 A
' j; @5 q; B& K- A. |' e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 c9 ~+ |+ |# X% k- r' S& F& F2 Z! }
0 k- p! s8 [4 ~! [5 E. ]
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ Z2 C& l: ^2 W1 [;;
将此次交易的记录加入到customertrade-record-all
" y( @! W3 v, |2 y2 |/ y% send$ C; z6 I9 o$ T# v4 n: v* T
: w7 s/ D/ b" \7 K6 `0 h, B
to update-local-reputation. r, y* k7 [: G! F
set [trade-record-one-len] of myself length [trade-record-one] of myself$ ]) N. \0 K7 R4 b8 b
9 B$ u6 t5 T% C, C8 ?
8 F: U+ |5 w- k! G0 g$ C; S. b0 \
;;if [trade-record-one-len] of myself > 3

4 A8 M: }- D3 R0 G4 ?1 D( Tupdate-neighbor-total, I7 @% z5 z) O" W# D4 N9 H
;;
更新邻居节点的数目,在此进行
: D: _7 S3 W. Q( _" Ylet i 3, L( G# x1 s+ X7 F( B( |/ m
let sum-time 08 I% o* h# d3 G1 D0 u: `; {' W. t
while[i < [trade-record-one-len] of myself]
4 ^) P- b9 l+ J& [  q0 u[: h" q' S5 Z" |  m% G0 c
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' ^' d9 I; e  `( f, S0 K- Rset i
* W$ P: }3 B, o( i + 1)

; R; B3 U- V/ h]1 F2 b4 A# P) @: h' U# q
let j 3* ~7 U( d: c# h! R3 V1 H$ h
let sum-money 0
  [/ F8 \9 d( R/ B5 H7 v* d( cwhile[j < [trade-record-one-len] of myself]
# I4 x* f. T4 C" v8 W; M8 g9 W0 \[
; c6 \- U) ~$ t3 B7 V2 \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)
/ L, U1 q  d' d5 Fset j4 u, a& j* J- o
( j + 1)

' v! o) H5 y9 ]& e]9 ]  r! c, e2 X0 w
let k 3
6 s" w" \" ~9 ~& y: Hlet power 0
( S% Z% \( w- L+ K3 J6 }) Plet local 0# O7 C0 T4 R; R4 _% c: G
while [k <[trade-record-one-len] of myself]
7 o6 Q% z6 z' z  V) z- a# I: N[4 L, p# s4 B' c! e; q" c
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)
, D& @( ?; s5 h  x4 cset k (k + 1): o: f, o" n& i* k
]' V- ^( c1 K& H3 ^
set [local-reputation] of myself (local)
7 c9 m* |" J! s9 rend- ]# M% Q+ A, Z! Q% c. ~" `/ Z% R: \

7 \$ ^& d, U/ o0 A$ qto update-neighbor-total1 ~# O7 k$ A' K* `, |

6 ~+ \: b6 E5 A4 vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  m" p0 Y0 y- M8 W! W. l$ m5 B  H7 R8 C" R+ f5 A( ^
  j! B% Z. _6 ?+ n4 A  C. }
end
( X. y+ m& L7 ~
- J, o4 w) p( d3 M0 e9 Ato update-credibility-ijl 2 l- K' R2 }( P: t# t
* `* S) c  t3 @# b. f$ U
;;
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。! W) h$ m, [: t3 f4 W
let l 0: V# O  s, z6 `4 r) r( z- z1 H. K* L3 T7 X
while[ l < people ]) j7 n$ {3 |$ W5 p; h
;;
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- V& q- W! k# j3 B+ d
[0 t( w' M' u$ V' i7 W2 u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, u; h. {4 v/ `0 u: `if (trade-record-one-j-l-len > 3)
. ]6 B) {3 O$ d9 n[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 Q, g/ u; J9 ?: g+ P
let i 3
. u1 G; e& v" Q7 G5 s% elet sum-time 0
: ^9 q' L: S7 a& b! z/ e; j. bwhile[i < trade-record-one-len]. y( m) H0 R9 O3 n2 o+ Y. j8 c4 e
[! c  h( {$ L; Z: _& h4 E9 k  Q3 L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 i! t# A$ |/ U5 C" e& |set i. D# B/ x9 b" b/ ^8 p$ w1 O) V4 G: ?
( i + 1)
& Y* G- F. S; m
]+ K' P5 d+ z& n! w2 Y
let credibility-i-j-l 0
$ \" J- M) X+ Y3 Q;;i
评价(jjl的评价), n. c! z9 {3 j+ ?/ [6 ]" r# u
let j 3
1 V! ~7 X2 W4 W1 G* Jlet k 4
$ G' H' K: b9 G' U1 a) W! pwhile[j < trade-record-one-len], p( d: T. d* U  n( n4 g
[
5 ]  h! u7 h1 N3 l: ^6 wwhile [((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% L8 v( P7 e- o% r& M4 D5 P
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)
% m5 X( x. G/ I; F2 x: @& `$ b& Eset j
7 H# }% P3 X6 S4 U; F( j + 1)

+ d' v3 G( H0 [7 c" z; C]. M* q+ a' e. m. M2 s5 j+ K
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 ))
- F; ]" p- a( G, o) }) g' Q7 t9 L; B' e4 X5 C+ k7 [
. F" C( t# D" o6 V8 a
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# [" U6 q' X2 V6 j
;;
及时更新il的评价质量的评价' }. z5 A; C8 r0 x4 }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ Z7 L% ?3 i  P+ N. j. P9 J2 h2 f
set l (l + 1)
4 U) V+ B, _7 ~6 Y. ?4 j]" L) x+ Q6 e; F# }7 j% H$ @; l
end; E) i3 A. j  M: v0 ^
0 z+ A; C2 \( `  t
to update-credibility-list( t2 S/ X+ S* {5 o  K7 C
let i 0
/ q% v( E( P  N8 B7 p3 n2 }while[i < people]
9 o1 W! @0 M" w1 o$ _% C[& w+ j3 U( e" [  i7 ?- E" C9 j
let j 0
1 `8 t( ^$ ~; O$ Klet note 0) w% T/ X4 ~4 P& h: C/ X; O
let k 0" t. v% [4 P8 r7 k) k/ T
;;
计作出过评价的邻居节点的数目
& m1 ]1 d% k7 w1 `8 Xwhile[j < people]" |, B, O# z0 @6 T, J1 _& z- a/ [- z
[
  K' g. S1 U! A. p/ vif (item j( [credibility] of turtle (i + 1)) != -1)
7 G% s2 f! f5 I* _9 Y8 y! O;;
判断是否给本turtle的评价质量做出过评价的节点
  E% h- e& M4 T; z[set note (note + item j ([credibility]of turtle (i + 1)))2 x$ X' i  i1 O' P! \' D
;;*(exp (-(people - 2)))/(people - 2))]
8 p! r0 k8 k* J
set k (k + 1)
- r& Y; o8 x* d+ \]
' Q+ y" g9 d9 x: z6 i) vset j (j + 1)# v5 m/ k& v4 ?
]5 r9 T/ M' L2 W1 X$ O
set note (note *(exp (- (1 / k)))/ k)
+ m% b8 x9 Q# pset credibility-list (replace-item i credibility-list note)& H1 X' Z6 R7 d/ D  y# ]! E
set i (i + 1)
, P+ S* m3 p: Z- h]6 {# H1 A* |( ?4 j( }0 Z1 V, A
end
1 K. k' v. |2 [; A
- n- Y- O. h3 d: Gto update-global-reputation-list0 z1 n! h+ y. x; C
let j 0
/ t( e5 i) {* H; u) Owhile[j < people], g0 [# K" O$ w) v" v3 n/ T2 S5 z
[& V9 Y6 e) ~: X" r
let new 0
1 Y$ l( B) ]3 v  Z9 |' u/ b;;
暂存新的一个全局声誉% s7 z  \2 [2 B. U7 q
let i 0
3 H4 f6 {4 `7 l1 _let sum-money 03 F$ K5 g+ K* ^2 `2 h% _3 }0 x+ ]
let credibility-money 0
8 l% t& ^- i. Fwhile [i < people]' U* a  q0 Q$ U+ {- E+ O" C
[# Q+ g3 _9 L6 r) j  a6 y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 E8 B# J: p, u6 Jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% X2 l/ k# Y* \$ }6 w4 S- f8 a
set i (i + 1)' K% g, c$ p  |3 d
]
6 o8 j3 a/ x  n. v/ U: \let k 05 @! R9 q# E+ H% q9 C' C
let new1 0
4 V1 e9 b& `" B5 G* U# Wwhile [k < people]
  W# ~' M! b! S0 Q& w7 e2 N1 R[' n# U$ a4 k& m- _/ 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)
  ]/ d/ P, v1 Qset k (k + 1)3 j, P$ A! f, Z: \* d: R
]
* o( s' J! ]& l  ^4 a3 W1 Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 ?8 H1 b* \6 Fset global-reputation-list (replace-item j global-reputation-list new), x' {0 G! N4 Z1 X, ?/ \  k
set j (j + 1)
& z  o* w) T, P% A; p# d]$ P- Z9 y' R% @% z. x1 I4 o
end
9 _9 n1 N3 Y' t$ i! o% Z- h# {
6 f- o$ B( I+ {: `* V9 l9 z. @
# P9 `6 s$ r* ?* [8 v
  U6 o9 ?2 ^% o5 |; \to get-color
) d' M; o' d" H" H, M
. |7 Y, t& R4 Q8 }& Rset color blue

1 U5 d! H' B! D; @. ~& Xend
9 U; }! C$ L. H5 q7 b' o3 v: F1 `  h: i% l7 x8 f/ P
to poll-class
. c' ~) D: `4 {' Jend
% C/ @" x4 q7 t# w0 l  g& P+ u! j; [
to setup-plot1& {% B. A- f7 u/ U  a& e

9 L1 U+ M( R) }& o0 z& C& [. Tset-current-plot "Trends-of-Local-reputation"

- _. x* T! ^1 o/ U! X1 H& ]/ }. }
! u3 q& G. T3 q3 Aset-plot-x-range 0 xmax

+ v# a; P! I5 t2 |% e# L/ X4 x) T3 j: {  Y8 l
set-plot-y-range 0.0 ymax

+ t9 X, ?" _3 @end
! _* @- L: O1 {" Z
7 Q* z/ X/ y5 Z, r- S  rto setup-plot2
! ]* O* M3 w" M5 K/ w9 t9 C; d$ M% r/ L* M' a
set-current-plot "Trends-of-global-reputation"

, C* f2 n( o- @) R" G5 I* x& P9 X; A, L1 A* u9 ]! d
set-plot-x-range 0 xmax

$ j3 ?+ j/ ^. Z
! p& i1 k/ y3 b, f5 e( pset-plot-y-range 0.0 ymax

3 Q) f  Y% Z% Bend
. D0 T6 f2 n* O8 |5 l. L: B
9 j0 L+ F+ X, o% G& jto setup-plot3+ \- Z8 z) ?$ L

) E$ T5 o& l% D( d8 X7 a) Pset-current-plot "Trends-of-credibility"
) d0 @8 l8 L% C) d& @: f
' b1 E/ F/ r3 W/ ~  h  |9 R4 l7 w5 p
set-plot-x-range 0 xmax
  O2 i/ X: `. |; S
6 d+ `6 }0 {- b, w7 ~3 r, `( L
set-plot-y-range 0.0 ymax
# d1 v0 e+ Y  A
end
5 _7 w2 U; T" V4 e. }
! @1 l, Y$ y/ C' T/ w, [- u5 Hto do-plots
! m$ |& F5 l  aset-current-plot "Trends-of-Local-reputation"
8 N: z+ ~: G$ y' r, j1 hset-current-plot-pen "Honest service"
+ x6 H: g+ L4 o5 q! Y: Mend
1 H9 j8 q. a( S9 N6 W/ H* H' U
8 _) O) Q0 I5 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.
! i7 H, D' z# S+ h# r
+ u! x" \) f$ s8 I2 j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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