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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:1 N. N; H( l& @  `0 d* \  u* P
to do-business # Z$ A/ h) w7 X! o1 W
rt random 3604 e6 l1 y" Q( J
fd 15 o; q& c6 J! _5 [
ifelse(other turtles-here != nobody)[2 ]: \' R" x; H+ C' C6 c
   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.
$ v2 ~- v* a' |$ s   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + }/ I4 j8 j+ w
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! K/ T. Q) s" c; X4 X- E. ~
   set [trade-record-one-len] of self length [trade-record-one] of self
# H( p7 L& j6 N( U, [   set trade-record-current( list (timer) (random money-upper-limit))
1 w) A3 `- }! I: i1 \" a( s, O! g& _: K6 i* t$ i! ?, p4 _% B
问题的提示如下:
- R6 l: E. _) N; P  B$ L  d  N. e8 M7 p
error while turtle 50 running OF in procedure DO-BUSINESS9 \" X& C! A1 U+ N) D/ w+ W
  called by procedure GO
8 D& ?% s" k& Z: p" R! \OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" C  \0 `2 R. P
(halted running of go)
7 p5 K5 ?" B8 c, z, b* ?% A
  {' N) R0 D* B. a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~~
8 z2 C: E) [3 C7 Q4 ]" {( Q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
3 d- N% K3 ^0 `$ _$ ^globals[
4 Y0 l4 W! i8 z2 w8 lxmax
2 r; G: Z( x) [4 d5 symax
- T, N/ @/ w. Lglobal-reputation-list
& k* P) V! F) _9 X4 t
6 I" S: x1 n$ R2 E9 t;;
每一个turtle的全局声誉都存在此LIST
1 r  K. w3 l5 i) W: v. _: @+ Jcredibility-list: \4 W0 j* s' R6 c7 f; y; S: K
;;
每一个turtle的评价可信度
. u: V: Q. U/ ~2 f# s, Z" G: lhonest-service5 j5 q  |% n9 c2 R
unhonest-service
+ s$ k" o5 u" t( M: ~oscillation3 w0 M/ `3 S+ y4 R2 x
rand-dynamic# P: E* z* |  @! ~# h! q) q
]$ p7 k# n7 M& o: \* K

5 ]" L6 ]7 t, \5 L* jturtles-own[0 P1 t# N3 }- U/ ^8 @8 Z% A8 {) Q& A
trade-record-all; s4 t! z  S) q3 E
;;a list of lists,
trade-record-one组成
) x$ V( g8 {& X: dtrade-record-one
! N8 `2 a+ G/ N;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) e, I  P: k4 A8 ]: ?  |; x* O# G4 F' |* B9 C* [
;;[
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]]
3 j8 L, |. W/ Y2 a& p+ _3 s  otrade-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]1 B8 j! {% M8 E
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list0 e5 o, ~6 L& y5 u) {! _- s
neighbor-total
7 f& V! n# k' ~: {& ~) [  x+ X;;
记录该turtle的邻居节点的数目
5 N" g0 N2 L! T/ Wtrade-time
: E) V, i  h* F;;
当前发生交易的turtle的交易时间1 D$ G# N9 O5 i8 V
appraise-give
, [0 l" M* L/ M+ d; ];;
当前发生交易时给出的评价
4 j$ M/ g# M( K/ j- U8 g! Qappraise-receive
. l3 D8 b/ P" e+ E- N; X" [/ S;;
当前发生交易时收到的评价
# J1 Z! r; C- ~. rappraise-time
. ?' |, R) D' Y4 v3 v& };;
当前发生交易时的评价时间
; W3 e( _! v( z( z  N6 z/ A1 blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 f0 y; X5 E, B; }* _6 H9 ?trade-times-total
+ X6 O5 x5 Q7 V' s8 B6 F" G3 s;;
与当前turtle的交易总次数
: h* \5 n' }- S2 v  etrade-money-total
6 X  @& Y! q3 Q. G* Z! w;;
与当前turtle的交易总金额0 {% V9 a% L/ X2 i* P
local-reputation) G* I" t+ l- D4 i; P
global-reputation
4 }) b6 L' ?: y) _5 h- Hcredibility
7 t& _' z, i+ l8 M! Q  ^% v;;
评价可信度,每次交易后都需要更新+ I- s, ~* q8 g& f
credibility-all# T1 e+ b! O! z3 v6 g- R7 d$ g
;;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
2 A# k) Y4 c$ S
1 e8 [1 H  V0 o4 \;;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' |' R5 h1 y" Q9 I2 p; `5 e. c6 o
credibility-one6 N  p5 u8 H. ~6 F
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
8 n  o& k8 y& Y% T3 }0 Zglobal-proportion0 p9 F) G& V9 h* T# b
customer* M, U9 P5 l/ K1 e, _, o
customer-no
: }& M4 q$ {1 S" y, Ztrust-ok
- N# @3 A* U) p  btrade-record-one-len;;trade-record-one的长度
) t' D6 L3 w/ p2 I, H0 z. m1 {7 `  B]8 y6 \8 d: j+ i0 W' T
2 I# r" A! m  B2 c
;;setup procedure
8 R9 }" A% q: m4 B4 Y1 f! M/ ?! r8 G( n
to setup
; O0 M8 r0 `. s. V/ x9 M( q
; A; N9 Y, m! v/ F7 Nca

$ W% |& b+ h+ _. [& G
1 X0 W. {" J1 J9 o: Ainitialize-settings

4 {6 o, y# N7 f/ W; j& ?! A" ?8 k9 B& N' ^4 G) ]% \
crt people [setup-turtles]
  ?! Y* H# f/ R. h2 i

$ [7 ^) }- Z( Z& X- l& L% Yreset-timer

9 J. |% c# t$ S, y) q5 W% E& s( ?6 t# _8 \
poll-class

* j9 N$ r5 Y0 J4 t' q  L+ l  N1 }7 D) [# t+ g( R4 e
setup-plots
9 q; }# B/ n3 O6 h' r* q$ P" ~
& ?1 N" w- q- L7 b
do-plots

: u3 \% Z$ ^: Yend
5 ^' l  n# r" y6 [) \* `8 m) c% ?; J; q% W: X6 S  D
to initialize-settings
  z$ P+ \' F8 p/ Y2 s1 Z& _
! l8 @. }# z6 ^$ k" T  k; S, iset global-reputation-list []

9 ~, d* C1 N& f; `- P$ z
" Z" N( N5 k' G3 B8 k8 h  dset credibility-list n-values people [0.5]

5 F8 L! \& q" \$ W* S+ c: v; `& |' F. \1 z
set honest-service 0
- u# s4 Y2 }# g5 O

, U- E0 v4 v8 Lset unhonest-service 0
6 X) x& Z; A2 u/ X% @

+ G, _2 k2 T" D6 G7 x4 T& Yset oscillation 0
9 v, p& c+ F% F) b* V7 Y2 [2 k# f7 E

- I: I/ n, r( p" p& U4 B$ Lset rand-dynamic 0
# z0 i6 ]4 ?! I" f
end: E: |; e( U! z, D6 l

' Q4 G+ C  z3 z. T* ato setup-turtles 3 Q  v! B7 z$ p: {; u' n1 a0 m; C
set shape "person". ]9 v" B& ?. b
setxy random-xcor random-ycor
1 ~9 T3 \/ t5 v% p  u, z5 O+ Dset trade-record-one []  V& L! B1 Y% y, W/ {& J
9 b1 b* y8 ^/ H  l& F( c5 x3 L; k5 N
set trade-record-all n-values people [(list (? + 1) 0 0)] # d% r. L0 f  |  F
- K8 M) V! r; A) j# W! A
set trade-record-current []
( R  z7 R, N8 x; e7 ^set credibility-receive []6 V9 N+ F7 a4 Q, k8 y6 g! Q5 k2 Y7 k
set local-reputation 0.5' l  R. M# L5 j; g* W* [
set neighbor-total 0# y$ T/ W- A* s5 ~7 k7 {8 S
set trade-times-total 09 b" _$ p3 w. V- |$ t
set trade-money-total 0
9 s- _( a/ g& {6 S5 K6 ^5 a9 fset customer nobody
( c' T5 y: C$ W, i( c- u' O/ Zset credibility-all n-values people [creat-credibility]
3 i" w' s1 @& N( ~% E1 B! i, p% Sset credibility n-values people [-1]: @( R5 a7 e0 G) `
get-color
. R0 @' c  T9 {9 p, ^
8 B+ Y! B# W% \) w
end
) K! i' `6 P! Y) }+ _4 C  N
  x2 i2 r! h; e, {: k7 D) S3 g) ?to-report creat-credibility
, V3 i5 L$ t. _2 breport n-values people [0.5]' k1 J  A  Y+ y1 c
end
4 G8 C) V, D& J) h$ R- B4 Q7 g: ~  B2 p5 q0 k) B
to setup-plots
7 t+ h% r0 [) j+ z* ]: o: Z  E" N$ D& k5 z
set xmax 30
+ l% a' B2 p9 t4 {; O; B$ f0 @
/ K) D5 x# g3 [1 Q4 C' x/ ?
set ymax 1.0
5 ]5 c) f! m0 e; J! {  R* J0 _7 v
- I" f1 [* c& B+ _" e4 j
clear-all-plots
/ F5 _4 k' X6 i1 {9 h
$ P9 P- r% [" C. X
setup-plot1

) L- k2 Q8 P( c( y( `1 V# q( J% x( {& }- n& W
setup-plot2

  x6 m  x! q# a
5 K0 d0 s. _0 h4 K9 tsetup-plot3

) {3 r0 c( k6 K- m, ^end/ Z  G5 E! U) t+ d7 L

& A: A5 B3 R* l( M7 z;;run time procedures
$ j1 Y! G$ l: f& d5 m4 {
; c" z5 u+ r  K8 }- {% Kto go; K+ g2 i  B2 W- Z
% e$ D6 F9 O9 m. E1 }1 T8 ?
ask turtles [do-business]

5 t9 o9 g- l) p7 k  h$ A, bend
1 I: m. B8 n# x' M( I7 M! |1 e& V- b) P. L5 `+ E
to do-business
6 s8 V) t2 D* c$ X4 }
/ m( N( o& M% Q: i
7 q3 X0 Z- A! l1 N% R
rt random 360

# P. G8 d" E- P* Y1 k
; G8 B7 A7 y7 Hfd 1
# t, F7 o: h+ J) D) {, |
% V7 l+ e/ ?- V, h: @$ x* c9 @
ifelse(other turtles-here != nobody)[
* O$ k& Z0 N5 {) E+ ], Y5 t
& \  C- p7 }* s" X9 t. s% v
set customer one-of other turtles-here

- X1 _0 t. G6 c: O
/ Q$ C6 p- F0 A9 e# a;; set [customer] of customer myself
2 K- d/ M6 D2 B6 n
  R3 W, ?* x7 M! @8 p; [7 d
set [trade-record-one] of self item (([who] of customer) - 1)
& i3 U. K8 {$ }. ]$ e[trade-record-all]of self
9 C" ^! A6 T6 c' E* `. L% Z& S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# m' T. u6 K! J3 I9 r9 }
* m# _8 a" d1 m5 x6 Vset [trade-record-one] of customer item (([who] of self) - 1)
) ^0 R* w( ~3 u) |, T: ^[trade-record-all]of customer

7 E/ }' \- m  d  l8 B
! r* J& u* d+ g3 v4 u' @set [trade-record-one-len] of self length [trade-record-one] of self

( w  f# B1 G# P. |
' N) D6 A" r/ Z( N# a" l) [set trade-record-current( list (timer) (random money-upper-limit))

/ B5 c  x0 z2 h
# F( G' s& ?' Y7 \, kask self [do-trust]7 b7 P$ }7 H; O! i% c2 m& W& S% O
;;
先求ij的信任度) a) ^* s) Z$ K) J: S5 q

( P- r) H, I% a6 F2 R3 Rif ([trust-ok] of self)) m) Z4 e( h2 p+ L# o- R
;;
根据ij的信任度来决定是否与j进行交易[
" I) D0 d5 H6 J# H( X1 ?ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. h3 t0 Y  Z5 I4 K" |
4 G) m& W5 v  B5 P[

% m# A* r* @8 [# G9 z" J6 H' ]
6 u0 S; b0 H/ @7 G& Y* R/ L. f, o8 ydo-trade

- O7 g5 S/ p# V" i$ e0 t( e& _) h. ?: H8 q8 A- c
update-credibility-ijl

! k* P# p- p. s! N$ i
. `- N4 E3 i7 M8 L- L# xupdate-credibility-list/ N5 z' y7 T& e9 a
. Q) }& H8 z7 I4 i& ~0 E4 M: _% H4 ]; Y

5 T; Q4 Y: a! b5 W. ]6 s3 Vupdate-global-reputation-list
" L& L; X2 k* ~" X  a5 B5 X

, I8 z3 G& @4 {+ M1 opoll-class

# l* @. U2 X* |: g1 a0 S# ]7 a% E! V) Q
get-color

6 t6 e6 b; j& V! S( t+ |/ j% m5 H5 A4 N0 ?) ^& ~5 K; p2 d8 @" u+ F
]]
# e* n; G; ^/ c3 K  Q$ {: S  |* i. z& \! O7 s% @
;;
如果所得的信任度满足条件,则进行交易
, u2 P7 }1 D* w" G' p5 H4 e0 Q( g, ?4 \! u, M4 G5 A
[

7 T; r3 h' \! G3 H+ ]! K/ e) }' r2 ]8 o' \
rt random 360

' O9 E# v) }  `0 g; o' T3 m! ]3 _  E8 t* g: Q& B' r+ b  K
fd 1

5 k. Z" w. z8 l
) C! `& T0 {" T6 k+ c]
( Z! D3 |) v! j
2 K7 b" R& P0 `
end
# l" F* ]8 _# J* L# R

7 ^8 Q6 d4 g' H: z1 _  x1 i3 Qto do-trust " {# o; O9 F* @9 e
set trust-ok False) \4 `# L8 V$ u6 G9 H7 D& I
" D; U9 }9 D2 a! t
! i- _4 u! }0 e( N- }
let max-trade-times 08 }+ P, j9 V+ P% w/ O/ T) T
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: |6 x, W- T: h3 n/ E3 p
let max-trade-money 0/ N7 ]" X" J7 u3 Y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ G+ c% s' p( O5 r0 ~' Q" E
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) g7 n- n- h. k- z* m
4 t- b0 t- {6 |1 V9 U- Z

" _6 d! i4 d7 T0 G2 A3 Oget-global-proportion
( E8 X5 s( R% r" G6 @) ^: M3 zlet trust-value
) t; V. l6 O$ X$ {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)
( g5 L" H, @$ e. M; v
if(trust-value > trade-trust-value)( ~2 i. |, F6 m2 F7 u4 A: P1 c
[set trust-ok true]
" o8 |, i, E' L* @, o4 Wend6 F# ?1 b* Y0 q; _% ?* S

# z6 r$ W" E/ _* K8 N! n6 nto get-global-proportion2 g# L( O7 [7 A/ r7 y3 [4 m
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& E! \' C/ v( X7 j$ N[set global-proportion 0]
5 P( j9 L0 C1 ]0 n2 }0 g, q[let i 02 t! _% |3 T% Z3 N. i. |$ v. `. y
let sum-money 01 u  L6 z6 ~8 q: B. a  G
while[ i < people]
4 l$ p: g+ ]( ?, e& j[0 N3 @% `# k+ a8 Z
if( length (item i/ ^# k5 f% {, y6 S  S) \* H
[trade-record-all] of customer) > 3 )
4 f. Q+ ^1 P5 Y! i
[
2 z/ p3 L$ h, P9 d3 ]7 {" P. @set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ k: b5 D4 }  S0 m# b; t: w' o" M]
+ F( P: c( t* P( t4 R1 z]
. ^  o. ?  n; L2 O7 F9 {  wlet j 0
( g$ w; d) a# N3 R% c6 Q" dlet note 0
/ s2 u$ `- b, E5 ^: z- Dwhile[ j < people]' Q7 C$ M# }$ y* Y5 f. b9 {
[! a1 `1 x4 Y1 ]: V  \! }$ e  S
if( length (item i2 ~' L3 v" @" ~" \5 |
[trade-record-all] of customer) > 3 )
( {5 c+ O7 S9 q
[
* d: U2 u3 G  q* qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( h4 K6 f0 y/ n1 {) f. X7 k. Q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! y& t( z3 ~: s$ m3 q2 @# o8 U7 p6 S7 \[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& n. P. j6 e! O; Q- Q
]
% m. x: ]  y1 a, r]$ t( L( h) X/ F1 ~# K: ^' {3 l# e
set global-proportion note
" b5 Q/ V, ?2 c( D) N8 ^9 K! w]" g7 e9 i1 F5 r6 l+ \) J
end; l. B% c! g0 E9 Q

7 h0 v; P. q' vto do-trade
' O6 a) L8 x6 `+ o3 |9 `3 ]5 _;;
这个过程实际上是给双方作出评价的过程7 |# @2 b$ I  A  f4 d1 Y0 R# |  n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% @' m6 H, D3 \+ x* q8 L0 V' H4 u* ]! m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# [  _$ m/ Y0 W7 E# x' e& O
set trade-record-current lput(timer) trade-record-current
; m  W+ w4 h: D& V, f;;
评价时间# X- w1 l# b4 x1 t4 r8 s: `
ask myself [# D1 X% x; h* z1 L7 D" P5 T, w) G
update-local-reputation- p3 }+ J7 E4 }6 L2 p% K
set trade-record-current lput([local-reputation] of myself) trade-record-current# H2 r$ ]2 f: M6 N' s; p# `# b5 B6 N
]
. q: l) S: ?/ Nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( f: j8 n, O9 K" s# \9 R9 z;;
将此次交易的记录加入到trade-record-one
& _5 ?# u- p9 B3 k4 cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- t, ?# F; h1 C- m3 {/ B
let note (item 2 trade-record-current )
) j) R, j- y5 u" I0 `! iset trade-record-current( d) q- a$ i1 [7 w
(replace-item 2 trade-record-current (item 3 trade-record-current))

2 h8 i+ e( U) y& `& s" jset trade-record-current3 ?8 @3 E9 K/ }7 Q  \# J
(replace-item 3 trade-record-current note)
7 B3 h8 O9 b, Y& A* a& F7 m6 V7 r" n. F& ^- _* w( T, n
6 A, F8 B/ N4 G( U3 u
ask customer [0 a: e" |. V, q0 M& ]  y
update-local-reputation
/ ~" a( ~8 n' ?: H5 aset trade-record-current# r2 a2 A4 r" P. [2 h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' g/ v* U, G! l" k% m" }
]
& S0 a) [& ^# p4 {( q, P# @" ?2 b4 h0 P6 j) o

3 n3 S- F' G' y. K: M6 n: jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ @9 v! c$ Z2 E& F* G
4 X- `/ [1 V& i/ Y  w8 B
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& n: ~( |  \2 x0 ~+ K8 L# c
;;
将此次交易的记录加入到customertrade-record-all
5 i( C3 h3 p* _2 k2 [# Rend/ A7 c2 _5 Z1 ^$ A5 H6 U

7 \6 F1 a. }- z/ u" @! Bto update-local-reputation
1 G& v3 L" [8 n6 h1 j# Cset [trade-record-one-len] of myself length [trade-record-one] of myself9 Q3 D! E5 K8 r3 b& z: U" ^
3 c% O( E' f* f0 {  r
9 b! B$ P' O5 A% L& `/ `' d8 j
;;if [trade-record-one-len] of myself > 3
$ z3 F: Q8 S% |1 p* l5 M' y3 D
update-neighbor-total
- O; X! b2 e  Q- y3 {9 o' c;;
更新邻居节点的数目,在此进行0 L4 \8 p: Q! p8 ]6 y$ @2 b
let i 3
5 ^' S! h/ [" b+ y" @% mlet sum-time 0) E1 q# F/ Y9 }9 T
while[i < [trade-record-one-len] of myself]
4 j, H" g" D& ?, h  f- Q[
1 k' Y9 q. O1 e8 o, W: f$ Xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; s. C) s# j, k/ P- Iset i
0 s8 c  f5 Z+ g& m( i + 1)
5 Y0 _: {- E! |) d9 U% e$ ?9 G
]
% W3 G7 F% o  \3 G3 xlet j 3
' [" G5 r+ Q" _) x, Glet sum-money 0
: T6 r4 ~9 Z( Q4 G& r3 I& b% w# Jwhile[j < [trade-record-one-len] of myself]. F$ h. m% n9 R
[
. V9 _8 j' p' P( t* Tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
& U6 H  c, |9 [6 v) F- T4 T4 Wset j1 o# T2 K# G0 ?7 C+ j& z! h
( j + 1)

% C, k; r# U3 |0 d]
! P$ X$ h0 `3 Q  Y% klet k 3% ]7 a3 u, X( j2 T) H3 y
let power 03 u. R" U8 `3 i$ R
let local 0' `3 S( g6 n( G
while [k <[trade-record-one-len] of myself]* s: W" O$ M/ s% a' u
[
! y# F% K9 @) u$ x* y. }. ?) Qset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 1 |  z% b2 w5 X0 ^) W
set k (k + 1)
' a2 ~  a8 S# ?2 a- T9 E]
, c" W! Q- ~1 Lset [local-reputation] of myself (local)
9 Z. T( P0 `( D4 qend: g6 t7 ^' ?# k& W- h9 Q3 E
3 j* E$ R/ d3 n3 N9 Q
to update-neighbor-total# T2 x9 n. V9 C/ ?0 }
: z) r% M! c  R' `
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 G7 l3 w$ C) D( p  c
* L4 l. T  K8 {, C3 C8 `# |* Z

1 F4 m9 t1 d9 N1 R8 V/ T8 g8 w9 c' Send
5 _9 M& ]( z+ P0 @: m$ j- E3 L5 c3 r
to update-credibility-ijl
9 ?/ t* t0 C/ ^  o6 L* e: t( W7 n- m9 d) t/ v1 p
;;
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。# |$ G" m3 f% {; K4 }
let l 0
5 w. v$ |; u6 M2 K' Z+ Rwhile[ l < people ]
. M+ a$ S8 K( }$ U4 W8 Q;;
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5 T! P; v% x* s; R
[
6 [7 e# e9 h( M2 M3 ~, F0 Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" v* `9 v+ S# `if (trade-record-one-j-l-len > 3)4 k+ K4 U! j, Z( p6 d- \9 {& _- W
[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
6 h9 L4 x& T  Llet i 3
0 L0 c$ M. R' E5 blet sum-time 0; ]- R# f% R5 V8 _8 d) c) e% g
while[i < trade-record-one-len]
% x7 `2 D1 b9 t9 p[
1 }5 _. |6 Z: p# \+ ~% i1 b# H: _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 Y/ @: f% y+ p) b1 Gset i
" S& D+ e  Q# i- \& e( i + 1)
. @6 S( Z$ D$ o
]
; a/ {, u0 ~& G" t' ^let credibility-i-j-l 0! L( F( I/ t4 R% t8 N( F& ~' G
;;i
评价(jjl的评价)
8 [2 q* z+ ^  l; G8 jlet j 3
4 [! h: f. \+ _: X( G% F- Glet k 4, \/ W# }+ @2 a; G" P" _. k; H
while[j < trade-record-one-len]
% D+ U1 q2 l- {6 m[
+ q2 R$ z% f3 n7 S1 Jwhile [((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 p% w) V, S' ]; m' `7 _" aset 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- T4 v: j% h. O
set j
3 O' V4 a/ U* n( j + 1)

3 c4 E+ N5 x* I+ ~: q]
7 l. X# N5 d2 }8 s" C8 Uset [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 )): J6 I+ m- W( `9 [

# S  Q( I/ V# F% g7 |: p

6 y0 O* @# h; _) }let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ G# ?' n1 J" ?/ s;;
及时更新il的评价质量的评价
4 c/ |. I+ ]8 h' Dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& M$ `* M! s& `8 q- W6 D( uset l (l + 1)
. b. n! y: t1 M; Q8 e]; {. z4 a( Q, C' q! u  \9 c
end8 n+ f+ l1 z1 `, u3 U1 o# T
. W2 q- ]; U9 C
to update-credibility-list
" n! V' U/ @8 C) h; g8 c$ klet i 0( Z# G; r) ^% L* V( B% j2 L8 q! F/ d
while[i < people]' c* @+ O, [9 N3 p$ [# B
[
: o6 j) {( X. \, y( ?4 c6 ?8 Nlet j 05 h  A1 I2 _3 k( ]& z5 r
let note 0: N4 |3 V0 z* A
let k 0
# k% C( s3 H0 s* E" ~1 C9 K;;
计作出过评价的邻居节点的数目
; {1 v- V4 U8 Zwhile[j < people]" L+ c' D* |, T8 M, A; f
[2 x2 c( ~( D9 v% k$ n3 p
if (item j( [credibility] of turtle (i + 1)) != -1)
, f/ I9 v: t+ S0 T* ~6 l# t7 p;;
判断是否给本turtle的评价质量做出过评价的节点* C7 R% \- I+ `+ B
[set note (note + item j ([credibility]of turtle (i + 1)))7 |. X9 ~. y- B0 \
;;*(exp (-(people - 2)))/(people - 2))]
, T( T8 y9 U) x0 k5 k
set k (k + 1)  Z0 ]( t$ W% q! j7 W( @# Y& v; ^
]# f" S8 x5 B0 I5 l
set j (j + 1)
0 [. A/ J1 e2 f1 {9 H1 e# H]5 y) p2 s5 U, s0 N' r
set note (note *(exp (- (1 / k)))/ k)2 ?6 _3 r( `* H- @6 y' ?. w
set credibility-list (replace-item i credibility-list note)
; L8 k* i( B$ I" S4 V3 d* Q( Z- |set i (i + 1)
6 \* ~" S4 o) k: ^/ b5 u, f]
4 a7 |$ W& d( B1 A& i/ r5 K+ t# p' Fend  v9 F- ~0 ^: H! a3 I8 ]

" t6 Q8 G0 y( Y- {+ J( \; w; rto update-global-reputation-list
0 {- G, |. m5 ~9 N( B9 Rlet j 0
6 e4 O  P- {1 d# ^while[j < people], ^" S; _; b: d
[8 U) H* O" I8 i5 R2 t
let new 05 [1 Z. d$ n3 P/ m3 e% \
;;
暂存新的一个全局声誉5 {. X) J% [" q1 W- c- o; ]
let i 0( U3 m  M9 b% a
let sum-money 00 s4 \, U5 h3 w9 y, U9 t
let credibility-money 0
/ Z7 ~3 W: f9 Z% [while [i < people]
! D8 F8 ^+ w! @% y- e. Z  W! v: z' I[
6 O0 j0 j* Q( F. rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! t- C2 a) @/ y5 p2 V& A- pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" S. T2 e0 W* e+ A0 t$ ?3 j
set i (i + 1)' D- b. b, {- x  d
]! K% g# @* O+ P' `* B0 z! G4 _
let k 0% S3 \, e, J! K/ o$ G$ r7 t
let new1 0: A+ m) V5 j2 K2 m' U3 Z8 r. }1 k
while [k < people]
7 ?+ N" d* `6 x8 F8 d[( N0 j! ^6 V8 z6 o8 n8 I  W
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- t( s) S" e7 z5 ^set k (k + 1)$ A, b1 I" Z% f& C
]
( K) Z% d3 v: V3 K7 _* qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 v: O/ A4 `; i/ J" Vset global-reputation-list (replace-item j global-reputation-list new)
, x& w  _4 T  G  S5 \$ b0 Iset j (j + 1)* ^3 M  w: ^! `% r
]; P1 m7 z7 i3 A0 z
end3 C) ?9 J9 E) T6 j" q- S

- x  H5 g* Y) Q* O% k$ V' R
# M- \; Y0 _/ P- I) C5 t& f: V2 z" l( [9 ^
to get-color
4 D5 E! L; r3 q$ @- e
% ^, j6 p: ^7 {, n( n2 Jset color blue

8 Q; n- i* V( X# j% l8 {, vend
7 Y. ?& O% v5 k
; `! X+ ~( G1 w5 L1 _. S  R7 pto poll-class+ ]9 B! x$ E# {$ |/ G* @
end+ D8 ~8 D7 e/ `  Z+ n- k
9 Y; v/ v* a, i# F& F9 u7 f
to setup-plot1
9 o* x2 t- w! ^: Y1 b2 ~0 S
) \( r0 C! k: c0 A, S% |7 H7 [3 Q. I* lset-current-plot "Trends-of-Local-reputation"

, E- r6 F7 h. h# i
( `' r5 |* I& s9 {  K4 I* \set-plot-x-range 0 xmax

! B' m5 i' J; X. C4 I( D( s" U2 U5 T4 Z
set-plot-y-range 0.0 ymax

  i4 w* z. ^* _0 Bend/ v" v& t9 f7 m3 ?4 ~

4 K" }9 M0 c# e! f: [; k; kto setup-plot2. ^. ~2 i6 Q3 K; C$ b
; t  H+ f* q. v
set-current-plot "Trends-of-global-reputation"
$ I5 @: u: t8 C* h) W+ N/ Z" n

; L/ L, `6 E& h4 rset-plot-x-range 0 xmax
6 E' p9 l  O5 h+ y- B% v, c
1 I$ K6 H# @0 h
set-plot-y-range 0.0 ymax

2 E# o. p* s0 c( ~( O6 o% ~: Lend2 H. R; O: Y2 A+ n! G4 Y' l
! b; B9 G3 G# f
to setup-plot39 G, `7 \2 g- Q* [( {& O$ [
9 E  s# T. i- g
set-current-plot "Trends-of-credibility"
2 g; I6 Z* r/ n1 C4 d3 W* Z5 Z
0 ?8 w; h* Q/ z1 c8 ]( {
set-plot-x-range 0 xmax

( R) j' l$ s, \/ F# |
# F1 s8 t1 H  y9 G% zset-plot-y-range 0.0 ymax

# x3 m6 d& _' jend8 M* T6 ^, |% ~) v$ }

* @/ ~7 s) a! O; n2 M" h# Q3 hto do-plots# |0 \2 P0 n, d; m
set-current-plot "Trends-of-Local-reputation"
" k5 z3 E$ N) G) a( k! s% V$ y9 Lset-current-plot-pen "Honest service"7 r4 R! ?5 Y/ e- ~
end, _, _) _% [* G) e+ c" k, \1 `

6 Y3 n4 ]/ V4 E& R+ n6 ][ 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.
4 O7 W, L' Y1 y
  B1 O6 \; D2 z7 e; L# _; Y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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