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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:
3 ^7 d7 `! s& W* p/ ~to do-business 9 Q( P! M9 J& P
rt random 360
* `- k3 ]9 L3 a! y0 w  { fd 1
8 |5 m6 L# C! ^ ifelse(other turtles-here != nobody)[7 E- x: R8 m7 {8 ~  O' G
   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.
: u( Q$ Y; x/ \" c" b" w1 `1 A8 P   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 H+ w! V% \- }8 A3 i   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. d! U, _8 Q+ _   set [trade-record-one-len] of self length [trade-record-one] of self* |5 N7 ?1 D. L. O* j; w1 I4 J
   set trade-record-current( list (timer) (random money-upper-limit))
6 N2 [* v0 C6 r, w! o4 Q
# d! z0 I1 p& ^( K- \8 B问题的提示如下:
0 Q0 T! p3 k2 T2 j# r  ^
, \2 U4 K' b# U4 K( Werror while turtle 50 running OF in procedure DO-BUSINESS) {  k' m) q5 i7 O4 Z3 h2 Z
  called by procedure GO8 C# F) Q  F) X3 ~5 B* l' K3 v- \
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 n7 x- X3 g9 F* r3 {1 |8 T$ Y3 `5 A
(halted running of go)& l5 ?1 Q) a! T# S
" w- m4 A) C& M6 E
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~~7 i7 o! C; a( A- D; S+ Z6 f* [
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, |' u# r' h4 F+ e
globals[
$ {  j/ Y: D0 P7 p  [9 bxmax
8 ~+ _( S: Z/ U6 A, l% V' Zymax4 a7 r' K0 [$ i2 k% T
global-reputation-list
8 G- _- K% m$ T' w& L; o# H1 p' x5 H' v. y8 O2 T
;;
每一个turtle的全局声誉都存在此LIST
5 t( v8 f; F, ?. ~3 }credibility-list! Q- U* D/ {) Q7 t  {
;;
每一个turtle的评价可信度9 q+ F& ?+ U" ^7 d5 q. S) E" v% v
honest-service
4 C3 u6 [% j3 O# J1 Q& C9 |unhonest-service( b2 w# w+ Q( R) k3 `" B8 j6 u+ C
oscillation
& ~7 W- Q. x& Y+ [* drand-dynamic5 i( T  o5 |: N, u" `
]
2 C7 ~- x2 y( P  U: s1 v
+ K- G& @  K1 L5 Uturtles-own[
& u  P2 m1 W1 @/ R) p9 V" rtrade-record-all
0 `  H9 |, S( [1 H- c& F;;a list of lists,
trade-record-one组成, r+ \8 t' S) ]9 P
trade-record-one
# n$ ]4 g2 [* \+ x# f% e) g;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 S: l! j  T2 m
9 R9 i" ^4 N1 w. G5 x( l" o. y; 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]]4 k4 }" r  @! _2 n0 W
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]4 a1 K1 Y# o2 O7 z
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
! B4 l& c- \0 E" q  kneighbor-total. ]) |4 H2 I5 A- O( R& K
;;
记录该turtle的邻居节点的数目
- J! S# H* g$ Ktrade-time
/ O" I$ j% D9 J  E9 ^;;
当前发生交易的turtle的交易时间
1 r5 U( t2 @5 H3 {2 Dappraise-give) [3 A6 [& l1 N1 Z) a" i4 P
;;
当前发生交易时给出的评价
& ?0 E, ]5 F3 ?# Happraise-receive" j" a7 b( u. X, l2 v! C% C! _
;;
当前发生交易时收到的评价, D+ L+ l1 q# T9 L; W
appraise-time
) \9 l8 b- Y* M2 h3 y4 ];;
当前发生交易时的评价时间* }' E4 C/ a! L  W: [
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ h+ {, }: M/ k! o% utrade-times-total/ z; i& K0 @; b2 [  C
;;
与当前turtle的交易总次数  M! c, O1 o* E" r' F1 T
trade-money-total
! ~# ^: n2 A" R4 b( Y5 f, z1 D. U;;
与当前turtle的交易总金额
: j% P% Q& S( T+ _  v5 Olocal-reputation
( u3 @  ~* ?2 ^) P  }& }global-reputation% r; t8 G* |% @
credibility
7 |- ]/ E9 D- [- ?$ J( {; p;;
评价可信度,每次交易后都需要更新2 ~5 F! l1 D: X! c
credibility-all
! ~- M6 }7 e/ ]9 L3 Y) m! S;;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- x  _" H8 C9 d" f' h3 ?' v( f  r

0 a6 h( c2 o! J;;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
( C4 S1 C4 A1 g& \$ r3 H( u8 Ccredibility-one
" r6 t# M8 V+ v/ K, h5 j;;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/ b5 O1 Q. L- ?/ X0 T# X9 _+ i
global-proportion
( V, Y/ h" }/ i3 `7 J. G( ucustomer7 Q$ r. B7 Y% x% |0 [( R
customer-no
" X- ^$ _& }0 r+ T$ `2 Ktrust-ok6 M. C( |" N6 z. \9 t
trade-record-one-len;;trade-record-one的长度2 o9 l# r( J- S
]4 W/ O% _9 D& Y( |

2 v" E7 t- U$ |& H* d8 ^7 G1 D2 @;;setup procedure, K" ^" m9 u: y" K+ t+ c8 L
7 K/ M3 ?2 I( a' r
to setup. j  H9 X  D, P* a( ~

) I  N2 v- f" Q. Aca
4 t" T) r9 x( C1 ]$ D# @4 s
# U5 D; ~! w& W* }; D& c
initialize-settings
! G  p. o# P5 x/ g0 O( v

+ e& ]: Y. F+ ?% w) \0 ccrt people [setup-turtles]

* S4 `; n9 z( C6 A, C4 ~
7 c5 c9 k0 a/ |6 l; C; S6 W  oreset-timer
. V6 U/ _5 P$ n( H( @0 Q
- V/ ]; e; C' Q8 N4 E0 c- C. s7 f3 U0 H
poll-class

# [& b2 X# Z' V8 L2 X( x2 y$ `, c! Y+ }, Z( e6 {2 H9 x3 y
setup-plots
3 p; R! \* q" ^6 R! k
; `' A: B& o1 _1 O
do-plots
+ K, h: r- G& n! q. g; M
end" s! W* t) S' ]$ U1 u: D1 e

) c9 p% i6 \) b" l& G9 M& ~, B: Ito initialize-settings, ], M, J$ L9 f" ^1 X
% N+ M2 o! L' [2 Z- L6 C2 O7 u, o
set global-reputation-list []
% a3 W, F4 Z2 z7 J
' U: }' o/ k( E
set credibility-list n-values people [0.5]

: f& K. U* x" a8 `3 L2 x  y6 D
set honest-service 0
# {: U0 t6 _& [2 a) |

3 Q2 M  ?* H' G$ kset unhonest-service 0

+ _* W0 \2 \( F% E* l; u
; h8 Y6 _" f7 k6 l' wset oscillation 0
% ]3 |! @; g  X5 Y% G4 x

/ w% g8 b9 ]1 b$ s7 Y( j) zset rand-dynamic 0
8 E. d% ~6 }0 m7 D* y
end
: ^& k. M; R; Y7 b$ \; T) B2 B2 }; [
, J. _! V3 }6 a3 O" T* ~4 s2 Uto setup-turtles
) Z& s, r: B/ e; F' ~1 Gset shape "person"
3 B. M2 G! ~  _) N3 esetxy random-xcor random-ycor: E3 v) E5 @2 y% A8 {- S
set trade-record-one [], q5 _9 f! C( T
/ b$ B! g; K2 O! ~# M: A, ]6 _
set trade-record-all n-values people [(list (? + 1) 0 0)] 2 U9 \. g5 A% Q! ?
0 B: {/ b, E8 P+ d
set trade-record-current []. E* w6 P4 i7 `$ K: d
set credibility-receive []
( \; G+ n4 k+ }! g8 Bset local-reputation 0.5$ S& l* e8 x0 g( X! L5 t4 p' T
set neighbor-total 0
. o# ^- I4 _' W: e1 c4 b2 {set trade-times-total 0; `0 V# h0 ~" Y3 J: w3 ~" T! y
set trade-money-total 0
$ b7 E0 T# O, j# f' l( U( u+ fset customer nobody
( J4 T$ _$ U% y, S( p# Zset credibility-all n-values people [creat-credibility]
  v1 D1 ?- k9 J' ], k5 }( Cset credibility n-values people [-1]
) _" a- ]5 [. q. c7 \get-color$ u1 A. X) H" s9 k3 e/ N' @/ T
  p9 L% }" ~' w& f! Y! Q: h
end
, q$ d# r" M4 T! g; J. ]( c& y/ e5 v3 \
to-report creat-credibility: d% [( w8 @( W
report n-values people [0.5]
% F8 B) B5 K, S6 l, \end  ^, P9 e, r0 s
. E8 I3 X* h! I7 ~
to setup-plots0 U% f7 X. V5 Y0 w* X# ]3 _

7 g" o3 [& M# `6 y5 E1 P* z+ zset xmax 30

# ]. t" y2 T2 w! i1 }3 t0 c- f: Z% U/ Q5 o0 C
set ymax 1.0
% p- a8 Z, \7 t$ O$ X7 ~
7 Q: \, n- @7 E* L3 z! Z  {: @
clear-all-plots

8 o- R9 k0 H1 [) f" I, n8 S, j2 I! {2 h8 n% b
setup-plot1
. v; ~( b! {  j
( @2 J9 o9 i1 ^+ o
setup-plot2
; c0 m/ E' Y" \" B9 M, L
" y" R5 t7 E9 }9 \9 p" ]
setup-plot3

; @9 ^: f4 Q* p- p7 bend
7 ?3 n& {8 o4 p# B
& C/ r; ?" ^' W4 M0 M( j% |& ]: E! ^;;run time procedures1 J9 T. ^4 [7 n- a/ I; R/ T

/ \1 b* H$ n0 H+ n* E2 h. Cto go
* t+ T, M2 v* W7 b- O! [# d
$ S* l3 W9 S2 v! F4 kask turtles [do-business]
& G2 c5 H9 _1 F" m
end
! |/ D" |- q" J
; b3 E1 }( ?" N& l, Vto do-business
1 j9 Y0 ]7 \$ R+ p3 `# p

2 R5 m& b- _' U1 R1 H: @
( o) z2 I! K8 ^3 F3 {, l% c- C5 y5 {rt random 360
$ q! n3 v& w) `3 {. s. y# }
- C9 t) X' \* Z! Q) \9 b' X7 e! x
fd 1
8 A  n3 w3 O! ?1 I6 L4 n: x6 k
( s% n7 F+ H+ D
ifelse(other turtles-here != nobody)[
0 d3 H& u& J# s! C( ~) Z

5 n$ u7 W; x- K* ^% r/ J, kset customer one-of other turtles-here
8 p) d% n! r6 T, Y, [5 Z8 Q

1 V  U( J/ f: {8 a;; set [customer] of customer myself
  x/ K' G7 d  A) B! S' q

0 Y. F% N; ]) f6 G; R; Iset [trade-record-one] of self item (([who] of customer) - 1)
3 z1 m4 e$ y  \6 D* ]8 N$ L[trade-record-all]of self
4 Q% u1 i- _& [; x0 T; D;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ b+ @0 N/ q( V: s* t' ]- q$ c
; o' k, M0 G& T5 H1 a0 V" q; tset [trade-record-one] of customer item (([who] of self) - 1)' w6 C7 B# H; _( Z2 Q
[trade-record-all]of customer

# t/ l" K9 D. s; u
' a$ ]0 v0 Q4 L/ s4 N$ p3 j2 _5 ~set [trade-record-one-len] of self length [trade-record-one] of self
$ f6 {: y- ]- o; ~. J0 x
) {# f6 b$ a: P# G+ K% ]
set trade-record-current( list (timer) (random money-upper-limit))
8 Z* r- d! p: u- A$ K
( k! v5 K  A7 q: N$ j
ask self [do-trust]# X5 {7 K" P3 u% _' p, W5 k& t/ z
;;
先求ij的信任度0 Q( H$ A8 p, F+ c) C/ D3 i7 \% i: e
: `7 U6 L* W8 X+ q$ k# K8 j0 c; b; E0 z
if ([trust-ok] of self)
! V' R- m6 v/ S5 {;;
根据ij的信任度来决定是否与j进行交易[* {9 }+ W7 Z" F& D" U4 b/ M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* n! z0 S8 }/ v5 `
  T4 c% u) @, n9 m5 \7 v* D[
$ f: F1 m! ?. X4 G5 t

$ m1 o4 R3 C- Fdo-trade

0 G3 J% N5 g* W" Q  Q, N
$ M3 M9 L# E) G0 ~# h- [1 Mupdate-credibility-ijl
- d" Q7 U$ B! t

$ [. r! f2 U3 T7 S8 p! h/ x5 jupdate-credibility-list
$ G8 j, T: C/ V$ [* a/ j" i0 g# Z$ a
0 |! q7 l1 n; Q. j1 X6 y

$ V. S! ]5 H* i7 W3 b  v) vupdate-global-reputation-list
& |% x, h/ p0 g9 f
. B' A! a8 C, q! w
poll-class

9 h- R, N  ]; ^" s& \" E* q* L( a: f: Q8 L# X# h# Z$ F
get-color
+ O9 f3 x1 [1 j
! j& e- r5 Q8 H* z) o
]]9 F' M3 O, Q: A5 r
: R2 F# U' o. Q; @. }5 P
;;
如果所得的信任度满足条件,则进行交易" s$ B4 B( q" p- c' b# O& p# A

2 ]# |' y6 e( n. I" [  s2 x[

2 M8 p& j  A& L* N' J/ o. Q# v1 q" w( z
rt random 360

% L) ]8 ~- |5 P5 N" |  |8 [7 j# r- w2 l, m% Q( T2 A! F% K
fd 1
. \8 k: n9 G2 f$ n( a
4 g- j& V8 _! J$ J1 Z: t  `; _
]
! S- F# }: \& b+ ^( Y6 f: f. }9 S" c

( O' c/ S8 U: F6 hend
) a. l0 E/ W) I0 {
$ x- @5 ~# a8 r: |6 ]1 z
to do-trust
5 {9 Q5 u# n! Z+ Tset trust-ok False$ b+ \' K0 U8 v7 d6 |( O3 L! J
! J4 \- N+ g) Z$ U: @' D$ `$ u  A+ ^
% A$ D! m6 y" e. u# }; R
let max-trade-times 0
6 @; T* f$ X2 G7 K7 i; |- hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ Q) D0 ~+ w# t+ ~" L8 K
let max-trade-money 0
; s! \4 M$ t: ?: q( _foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ i" V3 C6 v# t4 v2 I" C9 ]
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 \, U; a" V6 |* A* u9 q4 G$ b) T1 f; g" u2 [: M

! p! d4 K: @( ^5 e2 Z3 Y" ~- O" Pget-global-proportion0 ~$ s! \! G4 |2 X
let trust-value
) E: l8 G& q# T5 g" P/ Tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
% ^& H5 v; L) T( \* H- x- `
if(trust-value > trade-trust-value)
6 k! s' Y2 B9 q; R0 R4 Q[set trust-ok true]
: D8 y+ a8 _: E5 x3 @$ zend, p0 s$ N# A' s  u. g+ w% b/ I8 |
" p: I$ x3 ]5 B+ v4 J7 k. p
to get-global-proportion
* i/ U% Q8 r4 E+ Q& J; uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 q; o+ C; x; d" Y2 r8 w6 W+ v[set global-proportion 0]3 b& R0 m$ s; h+ y2 D
[let i 0
4 e" |( Z' h  W" i5 k/ ylet sum-money 0, `1 a* b8 r. a* D' T
while[ i < people]
9 t7 ~* E- {* b1 a# {6 k1 o[* W: N  ~$ D* I2 h: S% {: ~
if( length (item i2 ?2 q, R. Y2 l3 j& u+ j
[trade-record-all] of customer) > 3 )
/ W$ b& h5 J3 m1 w4 [* r
[$ H9 ^  p4 h& c1 d9 g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) M, B$ O4 w, M. n; E7 b
]9 T9 s  ?% c/ b/ D* \. a0 ^' Y1 D- m
]
. c+ O- z) X3 Mlet j 0
5 S+ S4 Y; k) \4 N0 \+ dlet note 06 N& \6 _! [0 F4 t& }
while[ j < people]
, {( r; ]& }6 `3 \[4 ?; ~5 w) [0 Y8 ]- f% c
if( length (item i( T( e$ U3 {$ g+ t$ P; C  l
[trade-record-all] of customer) > 3 )

+ g9 m9 G. m* O. y4 m$ N; C; f) p[
1 H  D2 N& H8 v( C1 Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, G6 H7 p% l: q" Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 \7 _& c& `1 n$ v* G3 v
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' D5 O' |  E4 ]+ y5 X9 t
]7 M) {. i8 B6 v; M
]
, ]7 b& X: }. p1 E% \/ I) x$ kset global-proportion note* \& s; _0 c4 c$ D* n
]7 _# F  E& m: R6 i; U2 J( k
end
3 C' S" Y* }$ B8 }+ M8 A0 F  V
$ l0 e" _7 H* K& r' q  I: Lto do-trade5 j. g6 u2 F3 p- M, s  S7 Q+ l5 y
;;
这个过程实际上是给双方作出评价的过程" U) H( ^) H# H- ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! _- K" p# W1 e( a% c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 V) n" X: V' B/ [4 @6 aset trade-record-current lput(timer) trade-record-current5 M9 w. H: f6 N( p5 i1 u9 g
;;
评价时间9 e. s1 T1 j* o8 k9 P4 }
ask myself [2 M2 ~9 r2 }9 K; o* o! \
update-local-reputation$ A8 f9 j2 X0 H
set trade-record-current lput([local-reputation] of myself) trade-record-current- e5 z, ]5 e7 r4 O; @$ Q4 ^( b
]
8 ~& G) G7 G& l$ Y! Q9 U3 l! j) }set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ C8 V" e8 _- e3 ^: `7 d# D2 o;;
将此次交易的记录加入到trade-record-one
* v. S6 g3 X0 Kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) B1 ?5 _. D# T8 I6 `; A( X
let note (item 2 trade-record-current )
" C* z2 G3 ^9 _2 a0 dset trade-record-current& o) @0 F4 P4 ^* |: s
(replace-item 2 trade-record-current (item 3 trade-record-current))
! G0 {7 n& y5 k1 ]: @/ }$ R
set trade-record-current% L, S: F% i3 g. k; z( R
(replace-item 3 trade-record-current note)7 S8 |+ h7 h( b& b5 {$ k0 S, r
+ H. w1 j' Y' E

6 o% Q: x* w# |5 z' Nask customer [
, Y$ z4 B& i9 v2 |* `update-local-reputation! S& m* N, l9 r' _  x# z; g
set trade-record-current
* w+ G' r$ o* x  q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 N% Y1 S: L* W8 Y
]2 C+ v7 B7 e* H1 K/ ?+ {, g4 H
' d  a1 w3 o# s' D
# Q; Z- W( q6 v) `3 O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 l* A+ x+ W  D4 P# e' Z' I

# F( u+ G6 K6 r3 C+ C7 gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 G7 y, j0 x) @, c1 h; T6 N
;;
将此次交易的记录加入到customertrade-record-all: j$ `- N% C% }6 T, O$ |
end" B) e/ V. Q) H" S
) I; _0 k* }: @4 P' I
to update-local-reputation
+ V5 v: C1 @1 q% \3 L* R6 }set [trade-record-one-len] of myself length [trade-record-one] of myself- [2 W) |4 a! [2 {# Y
9 L# @; }; b4 F
0 N( v" c! B  V" g
;;if [trade-record-one-len] of myself > 3

3 ?2 D# J6 f# {* n8 Lupdate-neighbor-total/ v; h2 N7 p% X8 p2 d  N7 C& J
;;
更新邻居节点的数目,在此进行
# s) E' W. c" s% m. Zlet i 3
$ C6 V3 I9 P. W! k1 i. {8 elet sum-time 0% L! L7 u' Y* ~! F2 O9 p
while[i < [trade-record-one-len] of myself]
8 J3 W; C5 q. |) O: N6 y[, I/ e4 r1 Z5 N
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  G9 t5 G% g9 `+ nset i0 E( Q, L9 ?9 m3 P5 ~5 A
( i + 1)
% D7 o2 x* o! {, E
]
. B0 K3 x1 Y% elet j 3! n! s0 \/ O+ E  h1 ^3 ^9 O
let sum-money 0% H2 S( J) g3 j+ k4 O- ^& x
while[j < [trade-record-one-len] of myself]! ?" a- _1 i) N  F7 }
[
2 V$ u# a, s* Y3 \3 S( k0 gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)3 ~! d. ~5 {) j4 F7 e: G1 t
set j  z4 D# u, I0 W; _& i
( j + 1)
; }* q3 Y' {7 D
]7 b# z2 _0 l, `' Z% ]9 \5 h, e
let k 3) m7 d. ?% D- i1 _6 N
let power 0
* j6 h6 z  E# m; o; mlet local 0
# [# Y* k$ ~& ?while [k <[trade-record-one-len] of myself]
1 K* n  Y, U8 e6 F/ H5 ]4 Y[
# D7 `1 \+ P' S0 j( wset 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) 3 E! m% U% X, ^
set k (k + 1)
0 c6 \3 s3 }3 J4 N1 I  t; a% g4 l]: @. o* B, @# w! \$ v+ _/ W& ]( X! ~
set [local-reputation] of myself (local)9 p2 C" ?2 s: S4 J5 S2 |/ X
end
$ k* `& f# Y7 N1 r* Z8 ^7 S
8 A/ [. t8 l8 `2 Sto update-neighbor-total. L  F4 Z& \: Q
2 _! {" `* G' F7 l4 q. V' N& J/ c0 r
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  Y; Y' D# v9 V: l
5 [# ~# E" i+ ?- h7 ^$ i' I) u

/ h4 U; h7 \3 }* ?end
6 f* ~5 A6 X0 s6 h* l
$ K# \; @9 G9 q$ |to update-credibility-ijl
3 V. T/ J3 z; p" f: j/ D1 f8 y- K: V) O% I( z" i: 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。
) g9 v* Z" y) \4 Q  tlet l 0- }8 ?2 l) L( k, l4 `% g$ V
while[ l < people ]; u) b/ r  g# ^
;;
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4 w5 ^1 y2 W8 q/ }
[2 l5 y8 p' @  ^  d( b: r
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 q. d0 K, X$ y0 b, V5 z: [6 {( S2 `
if (trade-record-one-j-l-len > 3)
8 ^% U5 y$ A8 V2 j/ U[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; ?: {$ X) T4 A# R; c2 `
let i 3
& C9 R2 K2 @$ |. f  ulet sum-time 0
  L/ A; ]# E7 Gwhile[i < trade-record-one-len]
& J6 y7 [8 r# y  K3 W. K; m[6 i) l9 M% i6 h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: m+ _- u: B& o& }# gset i
# w+ F3 W& B" s. {1 h# Y( i + 1)
! }6 K% m; \. s, }% i3 p$ d0 I
]
) q1 I; l. M# m* {let credibility-i-j-l 0, F* b7 E% k  F5 [% |6 n1 D) s
;;i
评价(jjl的评价), R8 |" q' I. D. E. Y: T
let j 36 x6 G6 {1 A# Q; z* [7 [0 I5 P
let k 4! P; v2 O5 H9 q0 q: p
while[j < trade-record-one-len]* w5 p' i7 J9 h% O$ S9 C
[
2 \5 E4 e1 l* u# ?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
4 v& G8 @/ H6 `0 R. Rset 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)) t5 Q6 V4 @( m' T. D
set j
! m4 y5 E4 w( G* Z" b8 V( j + 1)

0 S; d4 [' `$ t7 r. N/ V: k5 b) i]
$ V) z5 A/ m4 M& ?( O# nset [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 ))
; j. |* C. z9 S$ t9 Z3 S8 E2 w. y
/ {) h9 j4 N! }8 C7 x& J* a
% j1 w8 c& `8 K7 r) H5 w' e
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ O3 l$ m) P6 V;;
及时更新il的评价质量的评价4 m5 Z. t' t! ?3 p3 t( A3 o
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 e, _& L1 S: h& `0 G# y
set l (l + 1)
# o+ Z  T  j/ s]
' k: _+ N+ s! `end0 G2 d' _4 I6 U  t  [5 {0 x

1 Y# G" b1 O8 Lto update-credibility-list
7 _6 `: j* Y, Z% dlet i 0" F# O- Q& h% [& J$ A  X
while[i < people]
  f( o0 q3 K- P( W[4 U/ U' _" C' m+ X& l2 [: ^# G9 P' ]
let j 0
! M1 }. \% W5 u% flet note 0
4 g% A4 _; Q( P# ^1 {3 B/ V) Elet k 0
% O' A8 k- y! v, s" ?* R+ ^  s;;
计作出过评价的邻居节点的数目
  v) m8 h0 Z9 s8 l+ ^while[j < people]+ F5 K  f" l3 E( Z" G2 ~
[% U' A+ s1 D! E  c* y1 E
if (item j( [credibility] of turtle (i + 1)) != -1)
2 H6 [- ^- ?8 x% n% `8 \2 ^2 V;;
判断是否给本turtle的评价质量做出过评价的节点
4 N: s* a  M# P  l[set note (note + item j ([credibility]of turtle (i + 1)))
! G9 @; o$ S, U' h2 @;;*(exp (-(people - 2)))/(people - 2))]

  v+ T  a. z5 |% {  {2 rset k (k + 1)2 W' S* Z1 j. F4 Y6 p6 j
]
/ S; g7 S$ s6 m% t& x. gset j (j + 1)& T8 Z3 U2 L, z$ L8 e5 A  w& k
]
, t& y4 A$ S% J! ^1 b2 Qset note (note *(exp (- (1 / k)))/ k)4 [  Y9 ?1 b( L2 C. @+ `2 e- H
set credibility-list (replace-item i credibility-list note)! Y; o' Q  V  y) d2 }8 M
set i (i + 1)8 E4 [0 u- h* u" N- I5 i, ]  r
]
( p( C4 u! |; A$ V3 ?5 zend
. j1 r7 o1 J8 A
" S6 z  H9 V8 sto update-global-reputation-list
* K8 i* T' m' j; \( s) Xlet j 0
3 y. O; M. T/ qwhile[j < people]8 v0 i8 Z) \9 [
[8 q% P- Y( T8 q; v7 {
let new 0
/ Q" W) A3 j7 d' _1 k# i;;
暂存新的一个全局声誉* }5 {) ]7 R/ [& f
let i 08 ^+ G* m/ U; Z# i  ^0 N
let sum-money 0/ C6 j1 `1 T" o
let credibility-money 0
$ p& E7 l1 g! v2 [4 ~while [i < people]
* t, A. V6 _, y  p- h[
/ ^: c( }6 }8 k) E3 uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ i. P1 z$ w5 F, W. `) z% q1 wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) h, X% ^6 y1 i3 P8 n  k! C
set i (i + 1)1 k0 Q( {" U, z
]/ E* U8 X7 F8 F$ X3 b6 P
let k 0- o* l9 w: C7 M7 c4 J  k" ?: {$ D
let new1 0
1 s9 z9 G6 ^+ Q( B; Cwhile [k < people]
/ A. a  v& l4 _( A8 o/ Q[
3 w" N8 f: g3 L- j( c0 Oset 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)
- S* E; w3 b3 K, k' Eset k (k + 1)' A' }5 z( @' _7 {
]
4 R# k7 w( ?) {4 c- ]- k: sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 c4 N: x* O. v& e  G7 P; Z
set global-reputation-list (replace-item j global-reputation-list new)
7 n3 g7 P, E- m" J0 H2 ^2 qset j (j + 1)
/ ^' C) Q  c4 l0 ~]) F! ^, o0 t5 |. G7 y
end# q- @3 F6 ^, }! S7 n: F# W

3 _9 ?* V$ V+ G4 O+ ?( B
: e( @8 V5 \! _
9 [  {; W  n; o8 fto get-color
! j7 {8 L1 u/ ?. [0 G- j# W1 Z% A2 o. W8 N( ?. K$ s
set color blue

6 F- ~$ H6 I& o; Dend  i8 u; v$ u" o: t! T3 e

+ [* y- d0 K* v  J2 y. S0 dto poll-class  ?- z, y) w# u* g. i9 ]3 f7 {
end  a( t5 w: |# `1 _) h* W+ k" }, K* L

/ a6 p: D/ O" w1 Z* U( {" x& Yto setup-plot17 Z: L3 L; x+ T" J5 r
" ^0 E+ U- I; j) P/ o2 V
set-current-plot "Trends-of-Local-reputation"
1 f# K- f. G8 O# ?1 V

& ~/ C% p! b5 q2 g1 z0 W/ ?0 Pset-plot-x-range 0 xmax
; G9 Z2 H! x+ t% B6 |7 }& q
: I3 O9 ?$ I% B* a0 M$ Y$ n
set-plot-y-range 0.0 ymax
! _/ q3 U8 |: w2 |! U
end: e6 R8 i6 y$ m+ `/ X
, O% |1 u3 A) u
to setup-plot29 G6 r, o9 \3 Q2 Y

' E$ [& K8 }1 ~! J3 M1 Tset-current-plot "Trends-of-global-reputation"
) N0 L% H7 v# }

9 {0 k) y, X# r) w* `# w5 L4 jset-plot-x-range 0 xmax

* l6 e9 z# A! G6 @3 {+ E1 _  K% u
set-plot-y-range 0.0 ymax
9 Q+ `& t2 {# h
end
! c) z) Y. ?9 N* w+ z9 }; Q" N3 ]# f* d) w' h* {$ d
to setup-plot3. ~. r. v. C$ M3 M# O" m

4 y& u# v  r+ _  n) [  |5 Bset-current-plot "Trends-of-credibility"

! U* \) @0 q3 x- [$ N% `# A0 X* T/ ^4 p! a% _- I
set-plot-x-range 0 xmax

+ W% y& T+ ^0 [9 R6 s' @8 k3 [" H3 @' v; _0 x
set-plot-y-range 0.0 ymax

- t) n- [9 O" d  w' F+ Wend2 R0 T$ z6 w" \7 e% C& y

& ^. t# E. ]0 f: [7 I2 oto do-plots6 b/ H, y4 C! Z
set-current-plot "Trends-of-Local-reputation"
) Y5 F6 m8 L. Lset-current-plot-pen "Honest service"0 s% l( H. Q4 v
end
6 J# N4 H; t* w1 {7 h
% }! s+ g! n) r" e! G' i0 c[ 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./ g  h" |7 S/ n& @( }4 L

  o# n9 i0 O2 @5 C& b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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