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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:, C  H: j/ J* z( k3 l
to do-business
7 h/ N. x& y/ ?8 L rt random 360
$ u9 ^8 ?! ]* M' |8 x fd 1
) J- F' n! D% O* K3 R+ Q$ D' Z ifelse(other turtles-here != nobody)[9 u1 |- [) ~% Z! J1 h. H1 E7 j$ W  K
   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.
  r5 I9 H: g7 C7 E4 t   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( u3 c& L9 ~. L- l3 R% y; \   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! t# g6 \2 _. ~4 N   set [trade-record-one-len] of self length [trade-record-one] of self
1 X7 A' P  ?' s% K) t9 @   set trade-record-current( list (timer) (random money-upper-limit))
7 j3 a+ H* F8 z" C* A# l  r9 ?3 S1 z1 q' M8 k0 I+ d7 f. d
问题的提示如下:: i7 o4 W6 r8 E  E5 l9 _: y  P
8 L5 f# x* |9 Q8 Q7 U
error while turtle 50 running OF in procedure DO-BUSINESS( Q: J( u) j; @* N
  called by procedure GO
2 ^( d- q" K4 u2 K% u$ ^" b  cOF expected input to be a turtle agentset or turtle but got NOBODY instead.
: z2 ]: |; g4 g) l2 _
(halted running of go)
" K* L% a/ f" i* P* [# S: ?3 i
, J% ?# i! A5 P+ D) o  x3 R7 H/ U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~~4 w9 O% g* U* r) g: ]
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* Z" u- m9 K; G
globals[
2 k) b8 g/ b4 ?: z$ j$ ?0 ^xmax
3 g+ T! N) A8 ^: k0 j& Yymax
7 r3 [3 S! V) @global-reputation-list$ x/ f; d' ^! |( L# j/ |; n

1 O7 q2 w% p6 m4 ^9 o/ e* D;;
每一个turtle的全局声誉都存在此LIST
. |0 K: \2 D- `+ y8 ^  |1 V# gcredibility-list
; M+ E4 A2 [$ i3 X% T/ M* d;;
每一个turtle的评价可信度+ m. X$ g, }6 {+ l! r+ ^1 c
honest-service/ m) A" v! j# a7 P
unhonest-service
& N( C1 \$ J' X# L2 ]oscillation
2 S; P( U3 Q1 n2 a& ^, \$ Drand-dynamic2 o7 q" l3 n0 Y4 G8 p" u6 F
]. w1 W- a) b5 s5 L8 [

/ U& }) B% j7 F. o0 D- rturtles-own[
1 D+ e& A; b/ k% ]' V6 {* L9 t, Y& Utrade-record-all
! Z' o1 W; ^+ x2 y) g;;a list of lists,
trade-record-one组成
8 U, _! H5 @. U$ a& }- Ltrade-record-one
& k$ X0 S# D  E  z2 I6 G$ f' j;;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, Z* Q5 k8 o9 q6 d6 ?2 h
+ _6 \) K5 j; b# c% b;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
& ?, w7 s1 O$ o1 m/ Gtrade-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 u0 p( d! X' ]2 y- }' [
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list9 b2 @( O. q& ^6 Z0 z
neighbor-total
  ~: |, q- w( y! i# ]# i;;
记录该turtle的邻居节点的数目
. ?3 S! k3 c7 z( xtrade-time
, H8 L  n3 w, i1 d. v" p& `) u. o;;
当前发生交易的turtle的交易时间2 N" n1 h; F' {8 R& u* `/ p
appraise-give# }: e, _0 {# g( k, v& b
;;
当前发生交易时给出的评价' [! g3 B; s- j2 P
appraise-receive
' l% S7 p( \. f1 V* e6 a. \; X8 n;;
当前发生交易时收到的评价
9 T( C4 h1 r" p  S! I( B' Q% Sappraise-time
+ `  v. ?# R# D( m' ];;
当前发生交易时的评价时间
$ ^7 U- V% ]  l/ T+ k: e1 b$ E+ U7 @local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 p$ |+ G' x; y( n& @trade-times-total% ~: @* c' R0 ~4 Q
;;
与当前turtle的交易总次数
8 Y; M5 f$ q; ?! H4 |trade-money-total
* g2 ]  x0 C% v8 P/ y;;
与当前turtle的交易总金额
" Q/ _; d1 u/ H- C/ _1 l$ Slocal-reputation" l0 k( r" I, J! u! ^, s
global-reputation
+ s: j! l% s$ V( Tcredibility
, T, `5 _$ P8 }9 r;;
评价可信度,每次交易后都需要更新
, O: Z9 Z( f( [! U/ n# Lcredibility-all% U# {( h- Y! `: e% P
;;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& _4 D) @4 t4 z1 S% T
- g/ P8 [" O5 W/ a. S4 L
;;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# `5 @6 X. \5 `5 n2 W1 d
credibility-one
( b7 n6 k* i3 W$ ~4 e/ 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
) G! ?# ?8 n8 l# X' Nglobal-proportion
. A+ V: B) |' `: fcustomer
5 e' z' I" V- l; ~customer-no
, X9 y3 J) c9 A, `trust-ok
0 n2 p$ K+ @; T1 s' Y4 ^2 utrade-record-one-len;;trade-record-one的长度- f1 F, E3 u- ]( e* n
]
# Y3 J- N( `$ x) Q) d1 u* w( P, R! I. |( n& ?
;;setup procedure: `/ N* l4 U& f% s2 M! I( @

5 \2 C$ u0 I- uto setup
9 ]- w" a. `! h! X4 Q% O( o' ~) a+ ~& F5 O, r
ca

) \9 P. o! d; b: ?" I; g) o! N: P! e  Y
initialize-settings
' v) ?: E+ U) j4 n
8 |8 ]$ y( a% V: l( d
crt people [setup-turtles]
3 \0 x  K6 n- ?3 Z

8 W# J8 k1 B& J' G) |reset-timer

& g# b) L$ ~/ E$ w. N
; J8 n* o( N/ m" wpoll-class
( R1 B6 @3 J; P: g7 x
8 }' }; A- P! |9 y" v0 q0 G
setup-plots
; x0 |; b, `% ^
7 S) R/ K2 H1 j  L. {& q( a  b
do-plots
0 T& `: }3 l% [4 j) X2 @  Y% T& ?
end- S% X4 G4 R8 g' G8 [" {) O" B, k

* N7 D2 y! b8 e, E6 P+ L" Nto initialize-settings
& b6 R  ~. P( q2 j. A0 a5 G) c) U  G1 n! e' D8 Q/ N
set global-reputation-list []
- z% d! D. P: E6 H# b( j  u
+ ^, l3 n2 H- i' ]2 ?. w) ^
set credibility-list n-values people [0.5]
) H4 N( {3 P8 A' Y

; Q! ~$ ^, G5 v# ]set honest-service 0
! q5 b% r0 e+ I2 ~+ t& M$ |% ^4 F

# H* n- t* a; t7 sset unhonest-service 0
; a5 }# ^9 F0 T2 a' C2 q
+ Q. m/ ?( V0 k7 ~
set oscillation 0
  b  u8 D5 R$ Q
4 m# [+ L/ w, @  l3 ?
set rand-dynamic 0

4 d4 C1 o. B. X0 v! W3 G. qend
# O1 l" Y9 F/ x1 M# `
% E  x3 q  h+ j' d( a" Nto setup-turtles 0 u) f% v4 D- r8 l' Z5 x+ X
set shape "person"
  T4 e. \4 D8 Qsetxy random-xcor random-ycor) D# N" z2 E2 M6 ^* j
set trade-record-one []
% m7 y: X' T+ `: C

/ v) i( N* B0 ^  d: rset trade-record-all n-values people [(list (? + 1) 0 0)] + W0 `9 p! `, E+ `

7 d# m0 j8 o, T* c; k) mset trade-record-current []
3 U6 H! y4 G5 R: K. U/ _' B2 Z& ?set credibility-receive []8 W$ \  O, M3 {2 G
set local-reputation 0.5
0 m( ~7 I, _, H( l& e- c+ v) Tset neighbor-total 0
% m5 O4 x/ p8 g$ H7 K" r7 Eset trade-times-total 0% j$ l7 v0 t$ B0 w
set trade-money-total 09 o; S* {7 F/ Z, e( m
set customer nobody/ r4 b, O: W) a; w, s" n# f; J
set credibility-all n-values people [creat-credibility]0 G- r1 g7 A4 H. i9 K( W# S( f
set credibility n-values people [-1]" K/ y! G8 i! g+ @- E& e: F# z
get-color4 k; k* `3 [/ s, _3 g6 U
3 @' h% `$ X' E
end
" h$ z0 _% [: q& q( ]; f
) x! T8 b& G! z4 Eto-report creat-credibility5 j, C+ I+ p, t8 p/ c; b; X# J, a
report n-values people [0.5]
) i4 u3 m7 e/ ^9 U  ]) bend% a9 F6 ?8 Q9 c% n: G( Z
3 x/ c% E. _  F1 [. y" K
to setup-plots/ T/ Z+ j( T, S6 f9 B
5 T/ g1 [4 k7 z4 _
set xmax 30

( W/ V, L# y+ Q" X: ^7 B4 b1 k
2 @, `) r( L! X" E/ Kset ymax 1.0
% n) m# G7 _: `8 U

. u0 p0 j" r& W% _( g2 tclear-all-plots

- U& k; t2 Q. q' z. q5 H+ E+ v- e# D, r4 \$ ?; F
setup-plot1

- y# F: L* o6 L' g8 u0 W7 d+ ]9 w
4 Y, L# }3 M& F6 Ssetup-plot2

9 |# `$ t0 L! L* Z$ N' }( |* b  R" a, I
setup-plot3
$ @3 F+ Q/ g1 Q" E6 F
end- J. i) C( m% k$ T/ Q% s, e

2 y. F, f$ N) l5 w9 Z;;run time procedures
. `( t7 q9 s1 h& c! X- G- i2 h2 y1 L0 F' b3 m2 |
to go* B: r8 r' J" o" N
/ _$ v* h$ n0 t+ K  q
ask turtles [do-business]
0 T9 _: c2 O! M! ~* r+ x
end9 c' ]2 X+ S6 b# }

) G7 `3 u# s6 Y; dto do-business - v9 l2 N9 V1 L& P5 X8 N- k
! o9 n9 U: @- Z; t  j8 u
- A) }4 a5 ~( X9 r! e/ i0 g* c
rt random 360

/ V9 `/ e2 D# [; }# X0 C1 |; p
- C/ ]  G# U4 H7 K- dfd 1

) M$ E3 Q) Q$ [/ n% I0 n( `0 t$ V4 k: p/ q* U& z: l+ r
ifelse(other turtles-here != nobody)[
! o6 ^$ p/ f8 p# V$ j- q/ n. b
! \; Q  G9 g9 ]; ^5 U+ o
set customer one-of other turtles-here

4 H0 S/ H: S! c/ B& f
/ F9 p4 ^: _" v, O/ O;; set [customer] of customer myself

3 _2 _6 j. L/ F! l
0 w; ^) j  J, q9 ^* |+ v5 wset [trade-record-one] of self item (([who] of customer) - 1)$ @* p6 q  g9 E0 J
[trade-record-all]of self# Q, D$ E; e% t
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  k6 W2 S; w" f* P2 m
9 {2 K% \0 Q# W! ~6 a) h4 |" B) v& Sset [trade-record-one] of customer item (([who] of self) - 1)* Z5 G2 N% Z: H5 I1 }$ X
[trade-record-all]of customer
2 H  U5 N  Z$ I4 T# M+ V; j5 b5 a

5 w* u& U+ m$ V: Q3 O% x/ qset [trade-record-one-len] of self length [trade-record-one] of self

8 }2 l/ r2 }2 v6 g; V# A: @% ^1 b& ?, w) l/ o! K1 n3 U. k
set trade-record-current( list (timer) (random money-upper-limit))

5 C+ X: U7 }) u; ]/ N4 A0 P9 ?* q" M1 l' e$ o1 ]
ask self [do-trust]. l$ |8 J- f3 J4 ?% C
;;
先求ij的信任度
1 s0 T! U2 s+ N+ a8 d! H2 j3 E- N4 `; B5 h$ J
if ([trust-ok] of self)
3 r! s9 @; w; K% A;;
根据ij的信任度来决定是否与j进行交易[
1 r, Q9 ?* l  u% f% Rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ L9 m, `' N% S' ?2 ~% T3 K' @0 x- }& O- e2 Q% `5 w& a
[
) W' H; W0 J% f) ~
3 S, u0 P* Z) V' h4 p8 O8 {
do-trade
0 l1 L0 O. `( h. R8 [5 v
* O4 l1 x+ X4 w; b8 }  v
update-credibility-ijl

- Q; A8 F2 {: u
, |+ M3 B( X/ K$ d9 ~update-credibility-list
: v! S  c& ~1 N

* K! H0 G6 Z! ^3 Z8 Q9 |/ f9 `8 g" x; x) M
update-global-reputation-list
. T$ G. Z. ^& `$ o) n2 ^$ |  F
6 f4 m6 N' W' t
poll-class
0 L: v  \) {; l/ W

9 y1 L8 O  z+ v! vget-color

( z& d4 G9 m% U5 e% _
$ ~' P- M/ b3 a6 V+ l2 }. U& [+ Q- W]]' e* L- V& _7 j6 b

2 y2 @/ v6 U* d;;
如果所得的信任度满足条件,则进行交易
8 V& L" Q  @4 \; q  W: H6 z/ K- @% m2 r! b0 m9 z4 w
[
, z) E: E4 \; Y+ u' _
( g- `) r+ F/ [4 q
rt random 360

# s, T* J5 s2 q; J- o9 T  K/ E0 l8 B2 a" z4 A
fd 1
1 e9 h& U4 s5 I, U

  Q3 ~6 |" W' b) P9 r5 B7 O]

( C2 q+ Z7 h( Z4 D, ]  y& h+ |% e+ r2 c) t. X
end

3 W- i- L; L3 Z4 _$ z9 v$ K' K
9 u2 H# W0 [- u: v1 G8 y8 }to do-trust
$ Q# W, s% V* n) Y9 vset trust-ok False* M$ @3 N3 {" ^% V1 @

* E+ |- ?) ?. L: p4 @
# m3 B' C% p  _- z, J; Q
let max-trade-times 06 P, j: i: J* {; |7 M" n0 ]( Y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, w% p: \) i* @5 O( g% Xlet max-trade-money 0
# {* {' g* z  k2 Z$ N/ a5 Iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- g' Y# ^9 ^2 `' T+ L1 v4 Z
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 d3 e7 U5 C5 L1 v/ z; Y: T" q

0 a' E# a! o" c/ H
" M! \6 K, m7 q; i  x. t
get-global-proportion/ t, L9 d, v2 Q, O9 y4 ?0 T1 k
let trust-value
& U$ a  S$ |* jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' x& V3 }4 g- [
if(trust-value > trade-trust-value)
$ F) @  b2 A. q/ _! D+ c3 G5 I[set trust-ok true]9 `9 G- d1 s' T& z, i& p
end
; A6 l$ |" T7 O% ~
% h' `) L6 e4 m2 U3 p5 m5 K, Jto get-global-proportion1 W% ?% }0 R- f* E
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), o( l0 @4 a% g
[set global-proportion 0]5 i1 a0 S; j- c1 V  w
[let i 02 _1 q$ c7 M3 D7 D6 y1 W# c4 G0 j
let sum-money 0
1 w! I5 p7 M7 ^  C/ l: Awhile[ i < people]; f$ [+ e2 o+ j
[9 A* |; j5 Q% |" p6 [
if( length (item i
4 E. K3 I4 P! Z6 l) [* I. ^[trade-record-all] of customer) > 3 )
9 ]) T: Q: y( H, k2 k
[
9 y" k9 ?' ?. J: q$ Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* }4 w% p$ r0 S]
) e9 ~6 ?1 T" P  @/ []9 l& U* b( u1 Z1 y0 n' v
let j 04 m% @3 _/ i/ [
let note 0
/ L/ Y( N1 _$ g6 u. f, }3 e& cwhile[ j < people]
/ S2 k% ?# k8 R- ]* J) X6 T[4 S8 ~7 p4 l* ~; z! G; V
if( length (item i: ]# Y. X! A! x9 s; `) x  t
[trade-record-all] of customer) > 3 )
# w+ `( W- d5 D- N3 B/ G1 z) g
[
. F8 n" R; C, Y1 mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ U9 j- |# m. P! G" U' s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  o: y$ t" h/ d. K3 n, f[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  u+ r+ F9 R) B  z) I
]
# D% n9 \+ a1 ~# d; q]+ ~6 A) W# J5 W$ |1 V+ g& Z1 j
set global-proportion note
2 J5 s  f) K4 `0 k6 y! m]2 F" L+ i4 d( x1 k/ P
end
' J) u+ E/ y  `6 ?8 K, G6 x5 j+ q
: C4 T6 t3 n. A, c7 \, zto do-trade
4 ?1 {3 W: `' l: v  L  J) U) m;;
这个过程实际上是给双方作出评价的过程: L6 M6 Q+ `  y, [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% }$ j& [. ]. ~; @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  t1 o/ ?8 C8 P' `, x4 [set trade-record-current lput(timer) trade-record-current9 a! y& e( V2 b& y. R6 B( E% l/ A: d
;;
评价时间
# P4 X) p; w  gask myself [
3 T( q7 o6 h2 K3 `9 p) Eupdate-local-reputation
; O1 G/ i/ x3 s- Q! U" Q- hset trade-record-current lput([local-reputation] of myself) trade-record-current
) K& C% {% l% I: t+ @; A1 \' K" D, y]( `9 ]6 V# V( X$ a3 Z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, P9 i4 _9 x& V' C;;
将此次交易的记录加入到trade-record-one
& j3 C2 L/ k5 l: @set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 A2 k# @% a1 g
let note (item 2 trade-record-current )! u6 m2 \7 Z/ e: \" [
set trade-record-current: A4 u9 S0 M. F
(replace-item 2 trade-record-current (item 3 trade-record-current))
* }8 z2 X4 t9 _& R
set trade-record-current/ F2 n- U; s% ^" Y* ~7 v6 U: g
(replace-item 3 trade-record-current note)
7 w' \; D2 F& C) O
6 z% }/ Y, g% j+ o

) f6 R" R4 A! v( s- n9 H) x# [, Sask customer [4 k3 l# d  D4 O! m+ [$ d% C
update-local-reputation
# g) g/ R$ I0 b. N, v2 p. `$ Iset trade-record-current
5 P% p% ^) r# T, T1 `% Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, C5 }1 L  z8 L- D]! O; r9 N/ h9 t* J. a9 x
. S" O+ u6 `7 o# I
7 {$ k# A  ]" C8 z( j  M8 T
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 K2 C6 I* z  P

/ L( P. V0 A( `set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 v6 p! s+ d& {8 z  W& f;;
将此次交易的记录加入到customertrade-record-all8 ?7 G. ^. O, s$ {- W( N9 R2 T! j9 Z
end
7 c, i2 g! t3 E* l8 G
1 C1 J) p* e5 @5 E7 Wto update-local-reputation  L0 J( V9 X- Y* Q, B* ~7 Q
set [trade-record-one-len] of myself length [trade-record-one] of myself3 O- [# Z6 w+ B$ L$ A3 p; D

3 [/ O4 ~  }9 C" w+ d: D" V4 _6 ^$ N& B) R; n4 \; b& M* k- C3 r
;;if [trade-record-one-len] of myself > 3

3 P# d6 f1 O3 D3 P7 Uupdate-neighbor-total! w* e6 C1 v( C, i
;;
更新邻居节点的数目,在此进行8 e& p+ c6 A2 e0 C6 ?
let i 3
: f7 V& Q( n* h- ?2 Ulet sum-time 09 ^8 i2 [* e( g3 n
while[i < [trade-record-one-len] of myself]4 \; W# M5 n' o
[" w. ~' u/ L0 b' S: a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" G( S# Z* V% N# j
set i* e5 A$ p: g1 W4 P, y/ l
( i + 1)

9 b3 `$ D- f* R, p]
5 j4 h2 E  k5 \6 llet j 3' \5 L* u  Z% w$ Z( q4 N9 i5 C
let sum-money 0
5 i; J, S2 F% q6 D) |8 Swhile[j < [trade-record-one-len] of myself]% p* W1 |2 u9 l- Z
[
& N! T9 ]0 D6 A; x1 P$ S) {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)( C1 n1 I2 G/ S; t
set j0 C# S- Z- O9 c/ A- ]$ P+ e+ P2 z1 R
( j + 1)
  b7 Y+ _$ u% f
]% m( L6 ^* Z+ k0 Q2 q- d
let k 3
4 O( f5 r8 k8 K2 H3 L& _* U1 Nlet power 0
) t/ U  ?# {9 Flet local 0
6 ]  z. \8 e5 v- W4 dwhile [k <[trade-record-one-len] of myself]
8 M/ d4 C6 Y4 O* y0 a" s[
" G: I. f0 Q9 N! }( Dset 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) " m6 j3 C/ w) i' l1 G# a  m+ _* j3 `
set k (k + 1)
4 S+ R5 C7 e+ l7 b, a]
& U! E- h$ `6 s6 _- bset [local-reputation] of myself (local). Z! y6 m5 N" a/ }# U
end
: _  m- I0 {/ U/ ~  o* B
* O! J6 {, _) b: h+ Oto update-neighbor-total
6 r) o4 A9 M! k# @0 B+ X' c
' ^! {! X5 T* V3 L6 u( O3 c4 e3 Q* mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* s9 }6 R) c( h
3 I/ s$ e& v0 o

8 W8 G  v+ M5 z' R1 |  G6 y/ k5 fend
2 n. ]& M! Y$ [/ O( h, n; Z- h1 U
to update-credibility-ijl
: d; E& B) x) @+ u( z4 {- ?) ?4 z* Y* O5 |7 L7 V; ^/ K3 n
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
8 j/ C6 z$ f+ ]% \1 R; Slet l 0
' L& D6 C3 {1 U6 f* q: Uwhile[ l < people ]
9 q7 ?; l/ D' y. L6 o;;
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 t; U7 a) P2 H/ [: L[
/ b5 t$ x3 X" R0 Q4 }% J& Q) ^4 Jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( n1 X' U* X) l" b) F* Zif (trade-record-one-j-l-len > 3)
9 ?$ ]& b* I: k+ ~[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
. `4 W9 R" G5 d7 Z6 W3 E8 g; Hlet i 34 T) y) @$ a0 [) d# M
let sum-time 0
- M; z2 ?2 _$ j- T7 iwhile[i < trade-record-one-len], C/ Z& t, M( J
[6 Z; _  r; Q' D
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. X) K, Q( E5 ^; A& Jset i
8 u0 h3 `5 g' ^( i + 1)

) j. ?2 @3 K9 Q# @7 q( \% v3 W5 y# Z]
4 Y% y9 @2 c! [0 Zlet credibility-i-j-l 0
. U+ B7 \* S& Y/ ~- S;;i
评价(jjl的评价)
% y* z/ h# N% j5 C( {* j; L+ [let j 38 u# b5 G% U# j; G) S/ R
let k 4
( U. l) ]& v( u% mwhile[j < trade-record-one-len], K' K  r; V- k* P
[
+ y7 e6 `# a# H3 h" [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' K; h; R: L$ Z6 U: v
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)) [! T' z& v. J$ U+ C6 v
set j
* X- _3 _, \/ R6 D/ y. ~( j + 1)
0 z: |# M/ F2 q5 |' n
]
1 j6 g, o6 O( y- x/ pset [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 ))
& l, x; V9 J4 k2 g% v, F
8 V; x5 S( o* g( @: O( m
* R7 f/ S, k* Q7 k9 L5 j8 u' O) o* k& M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 t) X  a/ G/ x
;;
及时更新il的评价质量的评价0 u* ~) |) @: G+ {
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 P" K0 L  J; t: D* }
set l (l + 1)
) _" a, l, L3 q5 y2 `]
: @; V; c. g6 {: X! Z; F6 r6 v  jend
- c0 `0 p* x% w3 v" ?0 I8 o) W
" \5 A" q5 v" a1 pto update-credibility-list9 Z6 ^. \' n4 ]
let i 0
0 l( f$ @" C# c1 E8 k. P" Ywhile[i < people]* X3 D9 Z# E: E
[: ^# U+ R+ \$ ^) J# X+ v+ p
let j 0
, q+ D2 a% a3 L- ?let note 0* K# Y5 i( u* e8 X" K0 D
let k 08 ~, g$ Y5 v  ^7 L+ ^
;;
计作出过评价的邻居节点的数目  i+ E1 a; H& p- x  o
while[j < people]
; v( {! E2 P/ H, h# q* A. z[  k; }- {' u+ m" O* G& R2 T# J* N
if (item j( [credibility] of turtle (i + 1)) != -1)
+ C* [  c+ i! O' E5 `$ C( N5 _4 R3 H; X8 j;;
判断是否给本turtle的评价质量做出过评价的节点
& D' v: l# Y! N1 p' E$ P2 ^/ O: u' F[set note (note + item j ([credibility]of turtle (i + 1)))6 n# r+ \3 m$ J- E; x6 J) v
;;*(exp (-(people - 2)))/(people - 2))]

+ N7 v' m. [. X& m3 T9 `; Q# Yset k (k + 1)  {$ K+ E# s$ v7 S: z9 Z5 F& b
]
, [0 f/ G- t8 C) Aset j (j + 1). b& Z7 d$ l% m& R8 r8 Z2 \
]
% B; p% r8 T8 }3 L, Zset note (note *(exp (- (1 / k)))/ k)7 _" J; x8 ]* ~9 O3 ?( y8 E$ x" |
set credibility-list (replace-item i credibility-list note)
- h; W( D3 t0 u; r6 oset i (i + 1)
& r# V9 B. c/ I' S7 w+ B8 N]
3 V0 l9 i* @6 {/ @end
, ^8 E! Y9 S! \1 S1 F
  f) k* B+ {5 [. o, J: Rto update-global-reputation-list8 e" m4 t: U, H
let j 00 w5 V' ]4 S* X
while[j < people]& K+ l3 H* b0 o9 u1 _" [" A
[
. C) Y* Y- z5 H4 Zlet new 0
) N5 p8 _' A' i2 O( M. f- e  S;;
暂存新的一个全局声誉) o- B5 z& G2 [( _
let i 0
# |" U8 c! ?7 G; ~& Xlet sum-money 0& @- R& p/ X4 B6 C6 G8 n
let credibility-money 0& }  [$ \, R* g
while [i < people]( L$ j, p5 ]# C: e$ x4 j
[3 N: M- g9 H  g  h! |* x
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), x; n3 X+ c" B+ L& F9 g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 t, _9 Y# i4 j, V( ^8 f1 N( Hset i (i + 1)
+ A# i  b) S( Y5 }( _# ^' p/ O]
; E& L. `, u8 \& s% ylet k 0
' {4 O1 `. S0 ]7 Vlet new1 0# Z4 m6 G- u% S, R
while [k < people]! s( k  r5 _9 c+ U
[
- w  K3 Y8 J9 R* Eset 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)3 O, L# d5 g: |9 X7 ~
set k (k + 1)& ^/ F5 G" T4 x! H- p* V7 {1 p: G9 q, `
]1 h4 }; Y8 C+ h2 w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 J+ L9 w/ d# p- |2 f8 v5 Dset global-reputation-list (replace-item j global-reputation-list new)4 d; ]' j" x5 P0 G4 w; a
set j (j + 1)7 e5 a, }1 y" N4 `0 C6 K
]% Y; H( k0 P- j+ z, _  \' Y; N
end3 x* ]" ~( d/ {; D
8 W+ {* ^4 E2 B* x; k" R
' [0 e+ y' ?# M4 }

; h1 n; y) f0 z2 Y' q2 Z* }8 @to get-color
- K5 a/ _8 f2 G' h
9 ?( S, S! J+ v1 u4 z( Jset color blue

( v! s' s+ A) o; Pend
/ T1 l! C% I  n! i& T: q
5 S* j- n+ A+ W1 |! Ato poll-class; D7 X4 A6 I; Q& b5 F& l) `8 X$ J
end
( s1 C7 a- n3 M; F6 b  N% x/ J3 V: f. X" J+ o5 r; ^
to setup-plot1, c3 i( |% L9 M4 H/ R! U0 A& T7 s& Q* L8 s

( p! @! Z) g/ @2 fset-current-plot "Trends-of-Local-reputation"
0 c7 }: v& d2 k& J* A. o

: |  c( A7 l" [6 l: G( O4 tset-plot-x-range 0 xmax
/ L5 W. u8 t+ m! {. J/ d5 v8 ~
; _7 k! `8 E* b* `
set-plot-y-range 0.0 ymax

8 G+ J4 v4 `0 ]2 ?end( k9 p3 g- T! n: a. p

. a) n3 b/ Y8 ^' ]# Y/ Fto setup-plot2
2 o- v6 @9 P% W. w# |9 B; j; d4 m' [4 N( O2 v, |) ^
set-current-plot "Trends-of-global-reputation"

4 d4 C! G; I) b& z( ~- B) S7 i- x* u7 t( ~$ {
set-plot-x-range 0 xmax

1 D; @1 `! Q$ X/ C% R) P) s
7 z# P3 w' L6 G6 j3 w- s2 e1 b2 v1 Gset-plot-y-range 0.0 ymax

" |( W! g9 M7 oend
# m8 h4 w5 w7 [# V. F4 R6 r  d1 Q! ^, x; k; ^$ g5 V$ |
to setup-plot3
3 K! g4 l( q7 t, X9 D9 e5 d' _' U7 `& j+ s
set-current-plot "Trends-of-credibility"
" a" T. P- E4 w$ Q# v
, D, `# ^; F: ~5 k$ v. ?1 N
set-plot-x-range 0 xmax

" I; X3 I5 V/ I" X
; h0 v* m5 n8 h. ?6 k* Bset-plot-y-range 0.0 ymax
: k5 ?. u' W. f( H
end
; H1 k8 y! z, x* C5 e4 k. P3 H, W7 Z
+ O8 K5 N- W7 w2 B2 q; ~; [. Pto do-plots) H! r# a( {9 ]2 {
set-current-plot "Trends-of-Local-reputation". k; o5 E) V- R  z- b8 E
set-current-plot-pen "Honest service"
' J8 m. M0 n3 [; x/ {end5 V4 j7 o/ K: |9 L( N

0 F# s/ q* T  o' X9 j7 j, L# D0 h[ 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.
$ {* r7 H( b3 `) j0 _: ^- Q' x+ f3 ~& P( Z( G: O
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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