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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:  B- X) y; f* ^3 D! O- w
to do-business 7 K% A. O& o8 O  @9 |, w9 |9 W
rt random 3600 y. G1 m5 V; `' `8 A; _/ u# P
fd 1/ o! w  P. y- s! E9 V: R
ifelse(other turtles-here != nobody)[# p% M3 j3 U! c& Y6 s5 \
   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.
( ^: Z9 x9 E: y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# E! T" t; _6 A' n) }$ l5 h   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  J/ S, q1 y& p! F# y) }: w4 ~
   set [trade-record-one-len] of self length [trade-record-one] of self
8 A8 U6 s* Y0 e( d: {   set trade-record-current( list (timer) (random money-upper-limit))
4 x' m* E: a( X% z6 [1 X$ {  }
$ W; g0 u  ^* a" z: S: R! u0 o问题的提示如下:
& `" z) ?' l% }* G1 s  F
- a( z4 r6 e1 n: d! Uerror while turtle 50 running OF in procedure DO-BUSINESS5 H8 Z7 D* Z1 x( r
  called by procedure GO; m8 Z- w+ X/ c3 K/ ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead." |8 k* m+ i* p( v
(halted running of go)
- P/ `. O( D+ X$ x* i
8 P+ Z) x3 H7 t% G5 W: {* g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~~$ J8 {5 U! {$ ^: z
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, D2 P" c3 @- f+ N3 G
globals[
# ~( M3 k) e5 R: C9 C  b1 f. @1 @xmax
; X. [9 {! f0 y5 U9 @ymax
1 H9 R: R/ _5 T5 z$ b( o; N. ~global-reputation-list
# a+ z! }; L! Q9 `! ]8 G/ ?( H: F; a2 T) Z9 h
;;
每一个turtle的全局声誉都存在此LIST
* n+ J/ U" W; I; d4 _. Y* x0 rcredibility-list3 ~: ?( V7 _2 C
;;
每一个turtle的评价可信度$ H/ k5 n) V" z  S& y/ b
honest-service7 \) _: f+ r7 Y+ v" Z
unhonest-service
( {6 H. p! {$ z6 C/ U' y; j( Soscillation  S2 E! S4 k( a5 |* \& ~
rand-dynamic
0 Y) U# w; t( C& V( c' G$ o]
, w4 a# W0 H9 Z& k
! p* u+ m4 U* o  Oturtles-own[
5 d# F( m( B5 ]+ r: `5 jtrade-record-all
, o, e% S* [' X" S% q4 u" T;;a list of lists,
trade-record-one组成
7 q( G) d3 v$ r8 D. Ctrade-record-one! V" \( x7 U; c8 G# x# |7 |9 H
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 x$ o' v$ U* g' H7 ?
8 ?2 T2 J! f% K+ W: Y
;;[
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]]
! o8 j: m' Z. d5 {7 Utrade-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 m* C( Z. o4 [4 w7 {& f0 g
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
" B8 c% d# U* kneighbor-total1 K$ B# M$ Z) `( B- `
;;
记录该turtle的邻居节点的数目3 m; v7 Q4 G* F! D5 Y
trade-time
0 Z2 U8 s0 ~; ~9 i( U;;
当前发生交易的turtle的交易时间
$ ?! z5 T/ e5 [appraise-give% w! R2 e4 y. k8 @9 Q
;;
当前发生交易时给出的评价
9 f' A& V& ?4 ?% G( Y2 h% x: Z" I# ~7 Dappraise-receive
; k7 v$ @3 p# h3 k. q" D- f;;
当前发生交易时收到的评价8 r; j/ y8 y: Y
appraise-time; d# R" B; k0 u
;;
当前发生交易时的评价时间8 ?! [8 j3 H# ?+ y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; ?3 ~& M+ {' A4 }trade-times-total% x4 r/ `4 p  J8 b
;;
与当前turtle的交易总次数
' Q" F2 T" L& Ptrade-money-total
) I6 x* N3 g) _# I;;
与当前turtle的交易总金额
  I3 ^$ u1 K4 b$ W8 c4 F9 Zlocal-reputation
" e1 }0 w) ?: Dglobal-reputation/ f; e0 K* w, u4 G; W" r; l
credibility* L. q, ^1 }! s
;;
评价可信度,每次交易后都需要更新/ d0 N  w9 |2 ?% A/ g  E
credibility-all: N3 V8 p) @% G# u3 \
;;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1 {* |; _: |% K( ?& b

$ ~) y" j+ g" w6 [- c;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
2 p$ ^. a9 _7 X; `& M. bcredibility-one
& b6 @# D) A2 o: [1 [6 F1 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people4 C# B; e/ t3 m8 }, G
global-proportion$ v6 t$ e4 s+ V8 }& j+ V0 [
customer" U- A8 [. \6 n% p1 w% d
customer-no
  i! M4 p3 G3 A) t# r6 P2 Itrust-ok5 I- U+ S, ]; C$ R# [
trade-record-one-len;;trade-record-one的长度  B6 _  Q" B2 @
]% Q: i9 w# g2 J4 Q5 \- J8 g
0 n4 p: Z/ r1 B9 \! g
;;setup procedure
6 s; Y8 C" s" q( _$ T6 D5 ~& @
. r& r* X; @: I+ u0 X' q* [to setup, z  F8 A9 j% _

8 h9 v( P& y# s! \" Jca

- j- r: o! R6 s
, q+ `5 g4 ?% `9 I8 i7 Oinitialize-settings
+ z# A' j/ r3 H0 i( P4 o# F" @2 X
4 {+ F% }2 A8 o  H( g, }. P4 W' H: E
crt people [setup-turtles]

0 Q! g! i; M7 L- A  @) Y3 h
' M( W- z$ n2 N1 I% s- V0 h# treset-timer

" |) O2 v0 b. o! g" Z' K5 e+ Y  D
8 F! m/ v% }- z. ?, X7 E4 x3 Rpoll-class
5 b7 Z, O% f6 h
7 m2 L2 {! ^9 R7 S% o: A: k7 B
setup-plots
! j, B* v. q; H  k
5 V' P( n8 k/ N: N& b, E
do-plots
) G9 h1 C% K% o6 V. W4 c. k3 ^
end
, z2 {/ e2 g: S* b" u, X$ e3 ~+ k) f! m! a. l
to initialize-settings
/ U: W4 j; E4 p: k- I( a, Z; N
) a* K3 v: c7 k5 o5 g% Fset global-reputation-list []

* E7 T0 N3 b% X) r" }) Y9 S. \  f! T: D
8 d! ~2 s' j+ e9 ~5 hset credibility-list n-values people [0.5]
# M) H: I2 M; N, b  h, S

& {" k0 N* G/ ]  ~set honest-service 0

+ o$ Y% O& G5 q! q: \
2 K+ n: i+ i* r3 e. U0 }8 hset unhonest-service 0
+ j: H  z1 P/ J0 ?+ k. ?
" h4 X1 e* s* f8 E3 _
set oscillation 0
. M0 }" ?1 Y4 l
3 ]0 w& p% l4 C/ c4 d1 z
set rand-dynamic 0

0 E& g- v0 o, @& f- [9 k. ?$ xend
3 }$ A) ?8 V! c/ n* j. W8 ]) g3 m( l2 a" M! X6 E+ l
to setup-turtles
, l% a( x. |& Q# I- J; ~- @set shape "person"4 W; M4 ]3 ~0 i, a+ Y5 Z; G+ H
setxy random-xcor random-ycor
% D4 C* y  O3 Lset trade-record-one []6 P1 k1 r& B$ T: T  ^
: i! \% y* F$ q3 {( P" C
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 f+ J( ]5 m0 d1 N0 `  @2 l; S
7 c% L, @* @) Q, Z
set trade-record-current []* B* h6 l9 V! a7 U& p
set credibility-receive []( n9 w* ^, m* B( _  T6 o
set local-reputation 0.5" F* v$ O- ?8 m5 W2 d
set neighbor-total 0
: b4 m% L' |, r+ `) |6 f: Gset trade-times-total 0
" V+ }4 x% i: E' Hset trade-money-total 0
! X9 K3 T7 A8 U  A5 Sset customer nobody
7 I5 E# v3 q) ~- J8 mset credibility-all n-values people [creat-credibility]
  P  D3 K9 J; I+ w2 W: R( Gset credibility n-values people [-1]
4 K4 d' V: v) J. Y0 i3 [0 Jget-color
& P! R, C+ T$ A- `+ B  r5 a* d

) b) M. k' [0 k8 A% Pend
  ~+ \1 U+ s& v0 Y4 M6 m: L: x. W- j* b% u8 l
to-report creat-credibility- N+ c) {8 T1 a/ k0 d4 q2 W: a' U
report n-values people [0.5]. j% u, o' k. N
end
( r( e4 u- R8 K- g6 N
2 ^/ _1 O: Y5 O5 J$ E( z7 Dto setup-plots* w8 Z& D4 A( H
* H4 {' u$ ^  @' F
set xmax 30

6 g4 R/ [/ C$ X5 M- m3 p$ C4 G
! M. Z: d: w$ S1 Dset ymax 1.0

% b3 \6 L  j! c" ]
4 @1 C. ~0 P7 B# i' f' w* Y3 Lclear-all-plots
- L; Z& E) p6 q
3 F3 V  ^9 q$ I+ o) Y
setup-plot1

6 z) O& K" [& a1 K; \
9 l' Z' @7 p; `3 Q5 k: {, t# \setup-plot2

) p6 l, U6 W# F; f+ H- x2 i( G0 I& J$ A1 o
setup-plot3

- k/ r7 w. z0 R3 H, Hend; o0 j$ m/ ]3 e1 M; o  Q+ `

1 z1 L1 ]4 q7 o4 |; _;;run time procedures
3 \- Q6 F6 i  I% k% J0 u0 U$ H5 U' J3 g7 Z: T
to go5 {0 ?' P' N6 U5 \0 ]
4 K6 ?3 Z; ^. L
ask turtles [do-business]
; D- j$ x  g3 i" T& H
end
( Q1 H/ M/ j% p* n2 Z! c9 p! T* k8 h6 g! O
to do-business
* v$ _; {5 W2 G

3 t+ o+ v0 r4 f( E+ h' C' ^' f3 i5 O. c4 K- S3 Z5 W$ h
rt random 360

* k9 p& H9 f: x  T, f4 N. I) H% e) M4 g7 a; G2 m" U' ]- \1 T" p
fd 1
6 D8 N/ V/ b0 e* `& s9 Q

) k, ?  B+ Y. hifelse(other turtles-here != nobody)[
/ P" F) x& O+ P; A

  u5 [# v' `# U; {8 p' Yset customer one-of other turtles-here
6 h4 ?8 f! W+ ?; _2 J
  C1 M& V$ l/ _0 B7 y9 e% x
;; set [customer] of customer myself

( }& Z; _1 _4 j) q, I; ^. R- b: t$ @: }& H, u4 W# u1 K: X9 m/ U! B5 e
set [trade-record-one] of self item (([who] of customer) - 1)
3 {' t3 |2 m4 j* G) e9 C' a/ t. k[trade-record-all]of self
! b1 P0 g. j9 M6 A0 K4 Q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; G' h6 Q- Z. D) h0 h& c/ Y: d4 `5 U. ?! a* J; A( S- |
set [trade-record-one] of customer item (([who] of self) - 1)
0 P9 @# s! M) t8 w6 \: p[trade-record-all]of customer
. Q. `" g9 c+ H" R6 ^9 V( ?3 \

: t0 v+ B, ]- y6 rset [trade-record-one-len] of self length [trade-record-one] of self
2 m$ ^  J3 L# @/ P5 j# U- o8 j% C0 I

4 T/ F2 }) _0 i$ ?3 fset trade-record-current( list (timer) (random money-upper-limit))

+ w; G8 C0 B) d# F" ]) v) l: n* k/ H' S8 F2 `2 t6 G
ask self [do-trust]* v; x: {2 K( a
;;
先求ij的信任度
# Y& `1 o4 \# J/ o- _' D, P, r0 d# B, B$ G
if ([trust-ok] of self)
2 J) Q# U, f% o7 m* K) o, X% d;;
根据ij的信任度来决定是否与j进行交易[# d( x" O/ x' b7 b3 E
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 L4 ?# b: f& Z( b; m5 K/ _/ v  o( Z

, H3 f- `5 A  G8 x# S/ E[
: B. c. P( P# j  f3 j

* k* v! n6 G6 e. a: c6 B5 ~7 g. sdo-trade

) w+ d0 E* p( y3 \, Y$ _9 N+ v$ V. ]0 O) V7 G1 X% G6 p
update-credibility-ijl
; [% o- K/ s& O
9 V! A- ], O# q9 Q1 P2 V( S3 x) X
update-credibility-list* ]1 D" |3 e. B0 x' H0 p0 @3 z
+ v: t7 M4 A% b; A: ~( N* X7 `7 }, B
3 Y/ n2 J; f( W* G& x) `! k; A0 h- G
update-global-reputation-list

( u$ e) f7 Q3 x( T9 T
2 c  E4 x, q9 k2 z( l1 S6 ?poll-class
* Q* j' ?. v* t. U! Y: W; M

+ e$ A. X' e! G' I6 A+ gget-color
4 h5 o+ N; D" t# U9 C
( l5 t1 o8 R- O8 [; R
]]# p) p" |) l, V$ Y0 r+ U) E; k
4 j2 H! z$ {# T- m' f
;;
如果所得的信任度满足条件,则进行交易
5 I  z# v% X' J1 R1 I4 G/ M, t) O$ J5 w; |& l& k
[

# `3 a. s$ |3 G' r; O9 W0 U! g9 R1 [
rt random 360
0 C0 z( Z% d/ W8 b; N. n# D

5 l8 o/ I: q; F4 t) T* {! `' P9 q% Xfd 1
; k, Q+ C6 {4 X$ [; l8 ]( d

' z6 U% d4 R% x& X' k]

% o  P9 ~6 O: Z; z5 l- Z( a3 e9 I" s- r; Y# \) `
end
$ q6 p4 K  r, M" J4 z2 G
# Y' c, K' T. q# O7 P
to do-trust 5 a+ K4 @+ x% v% d- \
set trust-ok False
# T! B5 s0 k5 ?. q; C
7 U0 h; I, o9 I# ?% G2 ~

# h) G3 O/ h: p7 N5 N4 {let max-trade-times 07 J1 i6 a6 T1 O3 t& T: Z9 a+ q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 D4 a+ U, d" i* @/ H
let max-trade-money 0
- e0 S9 y) f( B  G2 ?  \3 h6 ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 p: s: ?8 I) u+ wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' \  D6 U- i+ W" m; z# e: C5 w. n' m. M# E! r! Q7 x
/ t7 j: v  _; j$ ^. {' ?# ?$ R2 x6 u
get-global-proportion2 L0 X+ M- f8 b3 L
let trust-value5 f: L4 i: x# |6 k9 e6 w; D
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)
* D( m7 ], S6 F& _6 J  Q" |' i
if(trust-value > trade-trust-value)* ]- O* [4 Y, t$ r, X
[set trust-ok true]
0 X5 j% A0 D& b9 `* s# G( c& y5 I/ _end
' t- I$ W* |0 @' l! W% j! ~+ p& W, Z0 p! q
to get-global-proportion
- |0 t1 J! U" j* Lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 h* u3 I# l3 K2 e; F7 b
[set global-proportion 0]8 e/ M, e1 @/ m5 `
[let i 0
% s) o$ v% e% x$ c* F. Alet sum-money 0, f- X& c) r' t8 D/ j& I& N
while[ i < people]; ?7 ^2 Q/ q- `; g2 p( r4 @: ?
[
$ Z$ G8 S+ S: u0 _7 v: P9 Wif( length (item i
" u# C5 `, u8 A2 O* P! d$ Z3 j% ^[trade-record-all] of customer) > 3 )

) K8 G9 I) B5 t- R; N7 ]& G8 }[
$ Z! j, c" V9 \( [/ G. ~set sum-money (sum-money + item 2(item i [trade-record-all] of myself))( b: ]+ R/ |' W
]/ `3 O1 |0 o3 i7 R- }) Z
]
$ l4 c  H% x' B  ]8 jlet j 0
$ W4 T2 E! Q  m) f% G& }let note 0# G( m' d2 G5 g+ M1 C+ e- j; P
while[ j < people]
4 |  p( q6 U: a1 u1 y[
) |- O- ~: M9 }8 Lif( length (item i$ x6 e/ m! {8 L) a& t1 R& Q  r
[trade-record-all] of customer) > 3 )
' z1 p1 N! n5 }9 M4 f7 n" m; v9 {
[, n- U0 Q+ f+ {/ a  L" n% N" e( [
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# F. b, z$ R7 A' Z+ g! |, {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- d3 P* n. T- G4 @" D9 E: g7 {4 S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( e0 e+ H0 j# X) x/ L% s]! b# D3 H3 p) }4 p( K* \* U
]& H9 z1 q# v* G  X& C
set global-proportion note
; i1 x2 z- i0 \+ b+ e/ {]
  k( Y0 f+ O5 C5 tend8 U6 c: F3 J  Q6 K. l

. I3 Q% Z+ z5 f; oto do-trade
) l$ i& w; H7 m5 \* t;;
这个过程实际上是给双方作出评价的过程, x+ P4 c* r, M- l& m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! J5 q# Y6 p) t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# l& W! W! z) c! e8 Uset trade-record-current lput(timer) trade-record-current- R) c% g* R! v
;;
评价时间
+ }& }" @  V1 a* Oask myself [9 ]- }; ?) e9 ^: a
update-local-reputation
) q3 F' A8 ^6 d' N' _" m3 o3 Wset trade-record-current lput([local-reputation] of myself) trade-record-current5 r. Y& ]1 d, U6 O
], N3 ^+ H" U0 {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 t  t) z# ]9 O: t& r$ i;;
将此次交易的记录加入到trade-record-one
; Z2 @* f4 {9 U5 n5 m+ Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ q6 u3 D+ j0 O. E+ e: u3 w4 {
let note (item 2 trade-record-current ): P7 Y2 W7 K+ {
set trade-record-current
2 z4 p0 w2 T7 N' h5 N4 X7 t(replace-item 2 trade-record-current (item 3 trade-record-current))
: x% l0 Q' h" u6 j5 O
set trade-record-current
+ c  F# X# ~  _: @0 o0 A* E(replace-item 3 trade-record-current note)
; j5 z3 x4 i# k( K0 A5 Q4 f4 G$ R% ]5 L6 l; G. V) r$ P* z; s
, M' y- ?! I3 d8 P! b' v" D5 w, K
ask customer [9 V# M3 d2 h+ t3 O7 ]$ i# n* `
update-local-reputation
+ u: b8 G/ [9 C% h+ kset trade-record-current6 Z9 W+ X" x3 F/ L$ I4 h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) Y6 ^- Z2 g$ o: _]
# J2 t6 W7 o' s: \7 n) t1 a0 V' q
" d0 [. u$ \3 b. F/ a' G6 N4 ~

4 h, A7 M  k- X; E8 f. ]% nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- n1 B( }3 ], t

" `4 b' l( ~4 G" lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 |# i$ v, L' i9 u  Z;;
将此次交易的记录加入到customertrade-record-all4 a) s- ?" W2 R( _; D) ~) `$ @
end
4 C7 I" I& A* L- j) \' i7 V9 Z
to update-local-reputation) k6 O! {9 `0 u7 r, l( q
set [trade-record-one-len] of myself length [trade-record-one] of myself7 C% ]! v3 ?' n. g& E( A

; b# ^% K7 I% J3 J+ r: w# J; I& S$ a! {( S- ]" q
;;if [trade-record-one-len] of myself > 3
- [' }/ b0 |" e  }
update-neighbor-total
9 r- ?4 ]( S  @# L0 U# j;;
更新邻居节点的数目,在此进行
7 @0 [, ?' o' `3 Slet i 30 [1 ~4 |( W  Q8 l
let sum-time 0; ?3 d' Z. X) R4 S( ^' f
while[i < [trade-record-one-len] of myself]( O& l7 A: b7 a6 p9 X6 G9 ]
[
8 C# b. c1 ~$ N2 a# _set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 M' l5 L. p: {( {- I4 Q
set i
+ f) U; d2 {+ Q! I- I( O4 u( i + 1)

; f+ Y5 a* [7 B/ m2 u" W]
0 ?0 P4 o: U) T$ X  R% `  R: Slet j 35 `- Y; W1 l+ y; w* W; `
let sum-money 0
  v0 R, W" w. l  t& z1 Fwhile[j < [trade-record-one-len] of myself]8 |+ K8 Z4 W& Z) w
[) {1 F% n' Y% n2 ]
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)# p2 O  @% h9 X) t2 A, J& i, ^
set j# T! D1 v# X! D4 n
( j + 1)
$ Q) I* a) j8 }+ z9 \
]
/ f. o) k4 G/ V0 Llet k 3
! Y+ P& R& J  F  P. ?let power 08 K, f3 ]/ z- }. M9 ?
let local 0& P/ ^" @: v) Y' {
while [k <[trade-record-one-len] of myself]3 G$ O8 g9 Q) @2 E5 @, h
[
- a& d1 w1 m" e9 L  {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)
: f8 W  g! U  jset k (k + 1)
$ N0 L+ L+ h6 g: [& X, {], |9 X$ g1 h- `$ f" l# x0 V$ U
set [local-reputation] of myself (local)
" X& s' l9 ]: ^: }) vend
& [% h) W/ ], ?2 ]* t
/ _# Z/ v8 s: n% ?, O' i! wto update-neighbor-total% g4 U, p8 L. w2 `5 L
: R, A3 c2 M9 J4 k  e
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) y; n4 {9 s) `& L# r: ?- i

- e( Z' R6 {- x* q4 W4 H- I; s
# @5 p1 a, i% e# H
end% i* ^0 M: a' T# P' X- ?6 F. M

) P, @7 f5 k* _4 g3 Fto update-credibility-ijl $ S3 z' G# J+ R. C- f
' v/ R) i0 a( ], }+ U0 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。- X4 K& G5 L. n. ~
let l 0" a5 X4 `. d) j7 ?# D7 d0 l
while[ l < people ]6 V. `4 s2 r; }" o& x
;;
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 A" m) L# m5 L[; q7 @4 q9 p$ A2 ^
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), A0 c: v1 }) |' O. D
if (trade-record-one-j-l-len > 3)+ U% I/ w. u  o+ b; y3 _; f% C
[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
# L% ]& B% F% N8 H$ Ulet i 3
3 F2 s0 A+ V7 f7 Y& V4 Z5 E% v7 Ylet sum-time 0) Y' M- U1 y* a0 V# F/ Z: S5 t
while[i < trade-record-one-len]$ _& P, ~1 S; M7 q  D: V8 h
[
8 x* d) l  \/ qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* U+ T6 n9 ?. |0 U! o% R- j. G9 J
set i; k5 L9 u+ W, R2 |. A! }9 |
( i + 1)

6 T) y( {' v6 Y) V) e]7 \. j$ e7 M+ f
let credibility-i-j-l 0
" I1 V' {) [0 _- X1 b, _1 U;;i
评价(jjl的评价)( z$ i( s* j3 ~+ h7 E8 F
let j 3  ^/ m- V, r: K" E$ g1 M7 q
let k 4# N7 g" W" V+ @+ k+ k
while[j < trade-record-one-len]' K& @, q9 i* o3 V7 \
[+ F! S& p: d: l( J
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
" {3 _1 Z8 T$ [! K2 _, R' E  G  Fset 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)$ f* A5 L5 g- E* @  k/ |% A- k4 @
set j
8 N2 N4 l$ M; D( j + 1)

! m% X7 d8 ^. M9 F& n& n4 p]4 S8 Q* X: F! a3 y" C. H
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 ))+ I! U" Z  G9 t4 c% @# R
4 p% |) [% Z/ }+ E$ K2 S
$ m& q& l4 ]& n+ l3 P
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 O: i. b) G; A9 F4 H;;
及时更新il的评价质量的评价
$ n. V  M$ T( V) _3 W( S9 O. s0 aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. }( y+ `% @- }+ u+ P- Wset l (l + 1)
0 r2 F( ?. T! U( o]
8 u$ g( {. v: g, C4 Iend
; x$ {4 t& w* ?' Q9 }
- \5 Y8 A/ k) F$ hto update-credibility-list1 x, e$ e, i: f/ J% i/ L/ h
let i 0  ~- L7 A7 Z  @
while[i < people]- r" J7 ?( w' I; l. z
[
8 }8 k, S( d- t7 ~6 i! {' a' \9 \let j 0/ H5 c7 I* C0 X  [
let note 0" m3 u2 n( u: P* p+ q7 @3 B
let k 0
- j( R$ s. p6 n- |! V8 Z;;
计作出过评价的邻居节点的数目" N+ ]7 N( q7 s' q3 \# |' _8 e
while[j < people]
3 b: m! |6 z0 @6 N1 u$ }+ @[
( f( B4 T+ U5 Tif (item j( [credibility] of turtle (i + 1)) != -1)
# {- n# K, u% w3 o, g;;
判断是否给本turtle的评价质量做出过评价的节点
+ I2 L" T6 y$ S. v' L[set note (note + item j ([credibility]of turtle (i + 1)))2 n7 x, }2 d6 L4 W% b: ?* K
;;*(exp (-(people - 2)))/(people - 2))]

/ [) L+ l9 V9 I0 Oset k (k + 1). K! n# F" f5 g
]2 ]2 e, A! w& c
set j (j + 1)& s0 c, b! l* r5 |
]
$ X' T( ?* h; U" s; Q7 Oset note (note *(exp (- (1 / k)))/ k). I0 h% m7 i3 ^1 Q
set credibility-list (replace-item i credibility-list note): I6 x- P5 ?# _, o
set i (i + 1)
, [  G' ^# c' K) [6 u]( E% I9 _2 p4 ~: ?8 [) Z
end
+ w8 O  d2 e, D$ r" c! H( v) U( O% Q$ q$ G. k) z& P4 N
to update-global-reputation-list
) a8 h, Q6 K, s" a+ @let j 0
) I5 k- i1 e( W: Ewhile[j < people]
! {: [$ V$ s9 _- X& C[- O# F7 @' I- M1 V# S0 ^  n& g( n
let new 0  ^& M* |, V! H3 v! N$ U1 h
;;
暂存新的一个全局声誉
1 S# E7 t3 N4 Jlet i 07 d! b: c- I: N+ X9 o0 y; Y+ y
let sum-money 03 A7 @9 L7 `! V8 T! T
let credibility-money 0. q  W6 e7 G3 \' a
while [i < people]! Z% ~+ M5 y" r
[; }8 v" U+ }1 _8 J) ]- b
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ S. u5 {' X, d: m# ^+ y5 ?
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 L/ u1 H3 r$ {3 B* hset i (i + 1)
  X* h$ i( ~' ]# l; w( F]
/ _6 W6 e8 P2 p/ s, nlet k 0$ q" \' F3 k, [4 u" D$ [; J) K
let new1 03 E8 y# o$ V/ S0 s$ P; d
while [k < people]
  F, ?* k% p9 ?3 @1 R! K[
. u3 E, p% R. [9 }$ e: `$ @/ sset 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)
5 \& K  W$ i; Qset k (k + 1)
# O' x! o- d1 O]
; C) k5 ^% l! q) Y  {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- V. c9 _" _9 L% p5 P* L/ Xset global-reputation-list (replace-item j global-reputation-list new)
9 z6 _. K- q! eset j (j + 1)) P8 ?( r. p, a4 f5 g
]
/ @3 E! H# k8 P# aend
  j8 s' ^5 g$ C# s2 i4 j  G1 \; o* J- A5 ~+ X- n; R. `
0 l' c2 }% @% u. l0 J  D& L; t$ A

( B9 J' q% ~% p2 Hto get-color
( ^5 r/ Q0 }" L% Z: R! i
9 B; f3 X' {! S+ A7 Jset color blue
( \4 M9 d- h; c( l/ J
end
5 Y% {8 x, F  i, t% |& l
4 }% |, R+ x. p; H4 Rto poll-class# }& i! ^2 ~6 B- j0 K
end
8 o* H' \; U7 [# x8 r3 R" l3 n; @5 A2 T. l1 a
to setup-plot1
( @3 E3 w- q) H# C
2 f( E# j7 D& J0 Q0 dset-current-plot "Trends-of-Local-reputation"

) J; H" D+ Z( H8 l" D4 Q
( c/ F6 {; @  m, rset-plot-x-range 0 xmax
# N# }- o: a' R0 ~" m$ Z, q

. |2 D: b- S1 R# s1 fset-plot-y-range 0.0 ymax

# w0 |# X8 Q* rend% Y+ }% p) s5 [

- C. K5 c6 n7 k1 R: \+ Gto setup-plot2/ N: V3 Z3 ]/ F
- e6 z8 n. L. e$ C8 r  y8 }! m- d
set-current-plot "Trends-of-global-reputation"

* ]; ~! ?- q9 K5 E* }& L. q1 }; {( n- d( U# J1 j7 v
set-plot-x-range 0 xmax
2 r6 q; v$ _) a0 I
, p; {: R$ U6 g
set-plot-y-range 0.0 ymax

+ Z, Z* f$ x5 z( @) m* [& d$ fend
( l0 T8 c! G- }* v9 E$ [" e
( ?" o- l. p( {& `& I0 Qto setup-plot3; X! J, o8 k; j% v

% n3 K7 {' N& A7 r4 yset-current-plot "Trends-of-credibility"

/ v( p+ A8 O1 Q  A" Z2 _, D; C
* |7 @9 ?! _; D7 b+ Aset-plot-x-range 0 xmax

6 @6 h5 U2 y( X9 h; r& n8 b3 }
: v( W! v  w  Y( fset-plot-y-range 0.0 ymax

2 j1 [0 b# f' c6 a" d/ I, A5 G- `end
, c  K2 y5 e$ q6 g, R- O8 C! l$ f9 z' M2 H: t2 }$ H: }: {! x
to do-plots
1 V; A: A( e: b" jset-current-plot "Trends-of-Local-reputation"( w4 D1 R# z- c* Y% L' h* f
set-current-plot-pen "Honest service"5 E0 z& x& X0 s2 {, p- D9 w5 p
end
" t0 m8 c. l; k6 K. H" K; _1 Y5 q; s9 w0 J# }
[ 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.
. i: B. C6 }/ t" X% B4 n6 X& G: \/ X& x! ~7 Z$ w& d8 K% z- L
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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