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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:
$ h- q! y6 C! T0 u1 P7 I( L" g% Ito do-business
7 c# _6 s7 B, c; R0 P1 X rt random 360$ ^- |" \. y& {; Q. i1 r4 B3 ~1 _
fd 1
/ A* C, O% F& ?& ~ ifelse(other turtles-here != nobody)[1 D  g4 ?& ?. Y* @5 F7 L% x
   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.+ e- m" x& |* ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  ?3 E6 a$ _7 u1 M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 M0 I* k8 G' u0 I+ S   set [trade-record-one-len] of self length [trade-record-one] of self
, }$ t. j1 ~7 S8 B  {/ _* R   set trade-record-current( list (timer) (random money-upper-limit))
& s! B( {9 b9 x3 N* p
! \% q) Q0 t* _; c# e/ o/ p问题的提示如下:# k0 S  C9 m& f! e. ~/ _4 H
& X0 z) [% w+ q4 \3 Q
error while turtle 50 running OF in procedure DO-BUSINESS8 L# _; D9 g8 {9 C
  called by procedure GO! `: j3 a5 y+ x/ y! {
OF expected input to be a turtle agentset or turtle but got NOBODY instead.7 h$ H. E4 v+ e! |
(halted running of go)- H+ d3 D5 n% b+ C
2 i! g$ T$ V+ O. _5 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~~$ f/ y; D0 v; {) O" s- V6 X1 M
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 p8 n# a5 m( h  G' w' s* x# _% Fglobals[
6 `% ]% [, R1 Dxmax
. f$ E! v+ \4 E* A) V  fymax
* m( ?* ^& n" P. a& mglobal-reputation-list
! {. G) }, \; `! o/ ]: d$ t: V9 @9 t$ Y
;;
每一个turtle的全局声誉都存在此LIST1 B# Q' e0 \/ F7 y2 G+ M1 K
credibility-list
/ V( }" H2 W% t5 H  s+ r- b;;
每一个turtle的评价可信度  ?/ ]4 @' Q# ^! ]  `6 u4 K8 Y- `, g
honest-service
7 S; d9 x" a: W. |* Zunhonest-service: p) c" ?8 k& F/ k/ J
oscillation- ~6 b, ?8 _1 N! l0 h
rand-dynamic
& [8 S( v. }# \0 J]
8 T8 w7 l9 ?; b9 a: @
! Q( P9 p) r$ p7 kturtles-own[
7 `) N, V  z1 w) N0 `trade-record-all; u5 [; j. E: T& G5 Q: C% T
;;a list of lists,
trade-record-one组成4 k6 b% z9 d5 \. a
trade-record-one: [( e7 r1 b1 C) G( i
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 i# a. b7 r+ K' d& E& t3 g1 v
. V1 C/ J2 Q! p8 C, f" J9 Y$ `( M5 r5 q;;[
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]]
9 `* M. S: }, C9 K4 R  v) }! [& ytrade-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]7 L& q2 q2 D4 M7 t
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/ O" ^9 f5 ~9 C2 W* E; x. p
neighbor-total
1 {; @# O8 I3 q4 V;;
记录该turtle的邻居节点的数目
3 S+ B0 @0 t; O* w7 Ntrade-time- A3 I- I) w5 o8 p: M
;;
当前发生交易的turtle的交易时间
7 Y  P5 z: i: F9 K4 rappraise-give; w/ v/ P( n) G
;;
当前发生交易时给出的评价; J9 U- H7 D+ ^% }$ Q
appraise-receive3 u0 Y% s$ C# e" F, l' s5 O
;;
当前发生交易时收到的评价% s# N9 k7 Y; R/ L2 c' _2 @7 [# s
appraise-time
; c# j/ W, `' a' V;;
当前发生交易时的评价时间
0 X, I! g; W8 j3 ^local-reputation-now;;此次交易后相对于对方turtle的局部声誉- G  J9 X( X& ?5 b5 V
trade-times-total3 C' Y7 U/ [7 g7 {( y/ p
;;
与当前turtle的交易总次数
$ V1 r: \6 E; Q# @trade-money-total
; \9 m7 S$ n7 R3 e;;
与当前turtle的交易总金额
7 x8 Y. F9 `! E9 d8 q- Q: W# C( ulocal-reputation
2 G5 N4 }% ]4 S" v! j, j/ Tglobal-reputation* y/ x/ \0 P2 L; [8 A) J9 _2 r" M! S
credibility2 H* V& I1 a3 H. e. Y
;;
评价可信度,每次交易后都需要更新/ v  R2 E' i* r: t+ t! \; v. ?
credibility-all) L0 R+ U1 }% r* G4 j( H- 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
: i0 z; z* r. b2 |2 a3 e& e, E; d
7 h$ n* @0 K4 b& Q1 Q/ q8 C) X  a;;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/ F! k6 w2 K! w. t
credibility-one
8 H0 }3 x: K( h) y# G; W;;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% X5 m  }( m# R* b+ t$ w1 d4 \
global-proportion
5 h$ {9 {+ Z& L. Y' i( wcustomer
1 P# m2 q. E9 A- u9 a+ J8 ~1 O+ B2 Ocustomer-no' w6 U6 _& o; W4 j( v, e+ q; g
trust-ok) F  B4 M. T( T, G, h- K
trade-record-one-len;;trade-record-one的长度+ M) T0 D1 P5 m8 E& n0 m% F
]
% n$ U$ Y$ p- `- B) K& N  V0 Q* D* C0 ?
;;setup procedure8 I# ^8 F+ M- @; S/ {

, P5 J8 q9 l/ i8 ?$ z% bto setup% Z9 E) i( s; `
0 S) I" z! E  A( r) W1 H$ ^5 Y
ca
+ i8 G" t2 g/ q/ _3 J' |5 B' O

# T2 g  w4 `! b/ iinitialize-settings

0 p" @" X  f( D) W* s8 J5 C
8 a+ j8 F$ J; b" n5 x+ l& d- Ccrt people [setup-turtles]
* [3 m5 p; }( R  M) n- A
% Z/ s3 @" X6 z4 v! W( r
reset-timer

$ x0 Y" U! u$ [( O
  ^# l8 n9 ~2 K! V' ]# ^poll-class
# I4 O- N$ _. J; D
6 U; m% i- P, \; M  O  U
setup-plots
- D4 _- r( U  p- h! ^& N. ?
/ R2 Z1 W$ j0 n+ r2 x( s; j
do-plots

7 t8 C' Q& E3 z7 a7 gend4 j7 C: s4 l, ]/ ^

  i) P4 q) j1 q4 V9 v+ R8 \to initialize-settings: B0 x. N5 T. ^# c$ m% Q6 b
% C. F" o5 ]) J7 g  d- {
set global-reputation-list []

/ J- D+ R* f1 l  J# [) B. Z
3 {: v' w" ?1 ]. G+ x2 ^set credibility-list n-values people [0.5]

5 k1 c( F. o- }
0 l! J( h% h6 ^/ Y6 p2 b1 B+ K  d8 eset honest-service 0
6 Y/ ~# d1 M. b3 J+ o+ e4 y

2 s( z, j# S$ K$ `$ s! cset unhonest-service 0

9 u9 B. g! c7 e6 D- m( K
7 Z5 O$ t6 Y; }set oscillation 0

& \: o6 O6 m9 u0 S+ H, \
0 r9 Z. w7 A! r9 J: Rset rand-dynamic 0

& s1 A" X" l3 B% }end
" U4 m" _, c% p+ ~2 d3 E/ h5 P. r/ X4 d; G9 C
to setup-turtles
  f0 Q9 A# ?& ~$ bset shape "person"
. K2 S6 H( T/ k  {; M: c) Ysetxy random-xcor random-ycor
# u3 [- f( k. ]% v& p3 H, y, L% M( c$ rset trade-record-one []
, r8 V  @, {+ m8 C7 P; @* d

% e; x* b* M* Q* e. R* _0 Bset trade-record-all n-values people [(list (? + 1) 0 0)]
' R, P' ^! G; r$ t

) D+ [) ^, P' B4 }+ {9 E  uset trade-record-current []# N! \/ ^( O+ p8 ~% ?( g* }
set credibility-receive []
5 D  [: M% d. i9 D2 q- F) r5 _set local-reputation 0.5' l, E9 n2 B5 j7 |$ Y. f/ A/ }
set neighbor-total 0' g* Z8 k6 c, m* P/ O
set trade-times-total 0! }# b2 s5 G" r! T& v/ B$ Y
set trade-money-total 0$ g4 W# y. L3 ]6 E2 X) i2 [
set customer nobody2 v+ z( L& y* ?: U3 `
set credibility-all n-values people [creat-credibility]
" l5 L% |! m4 O# T: Pset credibility n-values people [-1]  r( \3 }/ F% z3 y; z, I' Q
get-color' K0 R+ m% v" ]" Z6 \$ J$ |

( w! @- u( w. V- {' |; G* p5 pend$ c7 d. _5 N/ t; A1 A+ E

. }1 Y$ w$ X6 H$ fto-report creat-credibility) r+ a3 ^: U' n1 `
report n-values people [0.5]0 B$ e* G0 [) t  b! m; E1 b3 ^- `
end5 E/ _5 _6 {( W3 R0 A3 k

, b- @; j, s8 d, E' ^  `to setup-plots
5 X  `/ a. w8 r0 P7 v* P! E1 a! _1 _/ X3 h. m
set xmax 30

( f% V( t% r4 `9 f' e/ Y& b1 T$ I
set ymax 1.0
8 `5 r5 `' M8 a. Z" y  Z

1 C$ J! }8 B2 @( |  Jclear-all-plots
, }: I- F) x3 D; x. E* D/ C, _# D
1 R, A; b. ]7 x7 k9 ~  n
setup-plot1

( n' m* w8 d6 g1 o& C# ^5 k2 w, R  B: e# c3 E5 e; h
setup-plot2

! i% ~1 U2 C2 T
- _4 M9 S% A  msetup-plot3
* E) v3 J0 H& ]! p( r
end
, J) c; \% T, X1 L/ \, Q9 t) W) g5 @
;;run time procedures, t; Y' z8 R. y8 n; \* U1 J
7 K4 W% j6 [4 f4 W! _( k% K  x8 W
to go$ o7 n. n$ a& B  j
+ I% z2 R9 _5 T& t* N4 f8 Y8 e) v/ n3 t
ask turtles [do-business]
: Z. ]& H3 M1 `2 d# Y2 V  Z
end
2 r" Y* O/ Y9 A+ r  a3 B+ f) \. w9 V% ^" C8 }$ w  {( M8 c3 q
to do-business + m! `) a- Q. L( v  P; B, A
: r1 _5 K) L% r7 S

: l* M+ f3 @/ ], f9 c9 ?/ m  Zrt random 360
1 R( r4 `1 G  j; B# e9 L3 K5 @

1 A' B  y% H, `" v' ]fd 1
, U; r: t2 \: U

! q+ b9 M8 [1 T. m  Difelse(other turtles-here != nobody)[
$ u) B" _, d6 K7 P# `& q

5 e- h) p6 \# |3 ?; Z  d% H6 v0 Hset customer one-of other turtles-here
) f* d3 O/ Q# D; Q3 B5 \! u/ z# E% _

3 H+ N1 B* G' y+ l' d; v;; set [customer] of customer myself
! `1 J8 Z  D$ q9 K: @: O, E2 ]: I7 b

8 C; v5 ]2 Q. t# ?set [trade-record-one] of self item (([who] of customer) - 1)
! }% f5 [9 b1 C  ~[trade-record-all]of self# P! |% j/ T1 o: `) v' G/ l2 \* \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 A6 R) j; f/ R( a

0 f. g# k( a/ t" Fset [trade-record-one] of customer item (([who] of self) - 1)% w6 q5 M( r) [
[trade-record-all]of customer
  K% j* e& w3 o3 v
7 f; G7 ]$ Q; H: @; I
set [trade-record-one-len] of self length [trade-record-one] of self
7 b4 M2 N) e5 K5 d
$ z; U* R- J5 F+ ~0 f3 E1 b
set trade-record-current( list (timer) (random money-upper-limit))

  P, b( x7 J* K9 h; z. p2 ~, w4 E$ n) f$ Z- p
ask self [do-trust]
, |$ H# S/ b% a. z* M;;
先求ij的信任度
9 F. o; r% @" J( r; L5 u. e5 C, G* {' f
if ([trust-ok] of self)4 c& X/ S; P: e: h" N8 Z
;;
根据ij的信任度来决定是否与j进行交易[
$ j& \6 x2 L, A6 b' |, xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; @0 o( E6 W3 ~8 T3 S

9 K; |; X: i1 q' a6 |- d[

! I6 }7 p. g& G! C6 J
  L1 I# t$ {+ R; mdo-trade
! R6 G9 |0 g  R4 k6 T
' h- g. g+ O3 {4 l
update-credibility-ijl

, P, {5 B' u% r. V  x
: `7 ?4 h8 q, n! ~! p( B7 Supdate-credibility-list
3 u+ Y" V4 j. R9 w- e% h- E
& W: Q. C5 y$ z( F. u
- O! |! t5 |$ Z; J0 z% D$ j
update-global-reputation-list
9 p6 A+ g- K) u' c
; |6 w5 e1 _3 M' J& t
poll-class

0 Z/ ^. E! H) \) @- R
' w* B0 s5 W& N' @  s! e0 P# y/ Dget-color

( ?$ A4 M" ?* N$ R, d2 U- D7 r2 ~' ]! V
' X9 W. o% U- T. @# y9 j  \]]8 K5 l/ Y5 P4 f! R$ \* U

' x7 T# t/ N# T5 l; r6 k+ X;;
如果所得的信任度满足条件,则进行交易! T; F4 R- _5 b* D5 s7 n
) u. ~. d( T* e: F0 b
[

! S5 A- s4 N) p9 n3 L" I5 n" m' @5 T/ {* l/ D
rt random 360
. D/ }: Q& G. ]/ {7 ^$ z
% u1 e- R+ I: i" D. p' M6 D& u9 C  Z
fd 1
* e% q2 T8 K$ Z# Z% K
& \) O9 V" T5 d+ w0 e& g4 F
]

0 K1 s- r+ c7 z% s1 w# q9 c$ @8 A+ F8 a2 @& N
end
+ z6 K. t$ x" p$ h

+ J( l+ Y" E9 R+ V% ~/ bto do-trust
" C* `0 Z& V0 d+ I: _set trust-ok False2 U. Y4 I) _4 q  B' K* R& T
4 L4 V- N+ O3 n7 @4 N  }6 a
4 ?9 J8 g1 E, D8 m* M; E; {& X3 ^# d
let max-trade-times 0+ R* M4 d* U$ P3 h+ Z, ~
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 Y! n( G. R0 N) k" R
let max-trade-money 0
# N; u( ^- i# `7 _foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ ^! M+ L: h; _3 I- ]4 ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% c( @" S) U: x7 G6 u5 I7 Y
* U7 b. V9 B+ [( y% B" q+ N

0 V4 S; z* t8 H. `get-global-proportion
! W2 e# C& G9 E( Rlet trust-value
/ I7 k( m4 s# c/ p3 t; D9 Llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 K+ A5 X7 J* Z, z: Zif(trust-value > trade-trust-value)
, l/ }9 m4 [5 g[set trust-ok true]: ~! Q& N9 k8 k1 U6 K
end
8 `! q6 T# T; X" ?: U/ f, C3 P) t4 |- ]9 w
to get-global-proportion) A0 h; T1 U9 ?2 S3 V- y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' @0 Z% I& \- |: o
[set global-proportion 0]
7 [5 U7 e, y2 f0 x+ ~/ C; ~' o[let i 0+ x  d+ g0 O1 W' j
let sum-money 0: [* p5 n5 \7 w) B- g2 u
while[ i < people]
/ [) F( B, B6 K[
- h. H3 t8 ]. ?, d1 p8 U) {! `, Rif( length (item i# ~- E/ C9 Q9 W7 P
[trade-record-all] of customer) > 3 )
) X7 z; ?" C  w6 r4 O# ]8 k
[5 |9 M5 ^; D5 i  ~! @. C# j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ A- h9 i( t. Y
]
1 k& `5 H' [& |  y: i8 H]8 t3 m6 }0 c/ e, O
let j 0
! w# q; @2 F5 U! N6 @. d( e4 alet note 0+ [$ z- F0 v% q! w8 E5 ~
while[ j < people]
8 i% Q9 B4 u- r; ^; Y$ r3 @. _[
" e/ Z& U& Z( P! Kif( length (item i3 \4 ^0 s5 |) n4 }# I
[trade-record-all] of customer) > 3 )
$ s. E8 O- s  Q* j, {6 j; E( X
[- \5 I+ k) o. z$ x* D, r
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). V* [) S& _* i
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ ]- j' w0 P7 c* }
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% H/ A0 P4 e: i2 `( c& P
]
+ G- M+ q) d0 e+ y$ Z* i8 ]]
3 k/ O$ S+ D' [set global-proportion note
+ _( @$ D9 S4 C5 o% `. \]
/ j4 ]- v1 M2 l  t+ x6 I/ Rend
) [" i+ \2 m* C. f7 g, y" q$ E+ U0 s( ^* f0 Z, ]' {+ {
to do-trade
( H8 }( s" X! O" K& Z;;
这个过程实际上是给双方作出评价的过程
7 g2 F4 k2 O* Y  [$ r( ]7 @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! _1 m) H% M9 }6 h) Z5 p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! g: \9 n  W1 I& i0 Lset trade-record-current lput(timer) trade-record-current! k1 @* `- ^; R" L+ Z0 Q
;;
评价时间1 m; ?9 o. T: g8 P% S$ S3 A# u
ask myself [
1 ]8 x+ ~: Z' F7 N# ^" |$ Iupdate-local-reputation
, y3 X8 ~3 G; P: ^$ q9 ^* ~! M' ^( {set trade-record-current lput([local-reputation] of myself) trade-record-current! k( e; S- t9 }0 K
]) _. C8 E$ r  @4 X: t' [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 `5 o: j6 y0 D, e
;;
将此次交易的记录加入到trade-record-one
1 n( j8 b( B8 `/ cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ @% b" h" R8 p: [6 F
let note (item 2 trade-record-current )3 ?  b' }0 `$ n- `
set trade-record-current$ |1 a; r7 e- J) Q  N
(replace-item 2 trade-record-current (item 3 trade-record-current))

+ v+ G4 R6 _" E/ kset trade-record-current! W. [/ g9 z# p% L
(replace-item 3 trade-record-current note)
, V5 z' e/ |0 x" ^5 i3 E4 _7 `3 D6 C, g
8 B4 q" T) L+ B+ L5 e6 z  o
: R/ k" d# @2 F' h6 {5 P' _& r5 F! g
ask customer [
0 R) b) H) Q6 A; E% K, @  W: qupdate-local-reputation
7 C9 z! O$ G5 w' A- d( Q) Yset trade-record-current: M" o$ h8 o# l) i; c
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# I- S/ d* s& N# }) b
]$ g  U, U: c) z
' B, |* v/ W2 L& v, q9 M
( F9 }. @! _9 T2 C+ y9 E
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 W. F9 ]/ s: R% }$ H
4 z4 E" Z1 F; ~5 C; r* v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- A( m& A+ Y% Q' p;;
将此次交易的记录加入到customertrade-record-all
6 k9 R0 e  C' O2 ^' Qend
* w- |+ ^- x4 D7 M7 a0 i: o/ S8 J: C( ]8 R
to update-local-reputation
1 V; X, [( Y% y( U3 Jset [trade-record-one-len] of myself length [trade-record-one] of myself
2 c. k+ g4 X5 X  {4 }4 H% @3 m4 S) |/ z* t7 j

2 z9 Y) m/ A, x% d4 O1 y;;if [trade-record-one-len] of myself > 3

- @( j+ Q' {4 b9 fupdate-neighbor-total
6 Y! C& F9 i4 s5 `8 K6 d1 H;;
更新邻居节点的数目,在此进行& \' k, j; ?- @5 U9 Z. H
let i 3! [4 ~4 D6 p1 [( N5 _
let sum-time 0
2 b4 v0 h( A( c- O$ i& Xwhile[i < [trade-record-one-len] of myself]
7 N. ~2 z6 d  a$ t0 w[
! P6 o; v1 y; H# X) h1 @set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 C$ r$ X4 F- N$ k; y$ Q
set i
4 {9 M% P$ V. g+ b3 Z; [" m( i + 1)

- |+ E) P, M; h]
% U% _8 V. T# |: Flet j 3- w3 U2 {9 U% T9 a+ P
let sum-money 0
) Z' W2 v# c3 o- e% e, ]( gwhile[j < [trade-record-one-len] of myself]
5 A' O0 F0 Z6 r. Z  s[
3 h1 v' ]3 O7 N+ P: zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)& n- k; x" z! g; `3 y6 c
set j
- O7 p9 i8 @6 q5 J- B/ M: z( j + 1)
# G0 w. }6 V, {* r' K% |
]
* n' A6 x. F$ m$ wlet k 3
. Z% u! ]  H% @, Z+ X  ilet power 0
2 I* G/ c/ w3 M  ~0 ^# R3 g0 nlet local 0' d  W' O6 M5 G. T, A
while [k <[trade-record-one-len] of myself]4 o# H. ?! W- d! n2 u! c; ^
[  n: f" \/ H6 Y, {
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)
- U7 s- V" H* z9 ~set k (k + 1)
  z; E( M1 G, C& K; ^" J]& v4 l( N; b& M3 }" K" L8 e
set [local-reputation] of myself (local)2 ?* K5 W% N- o
end
8 ^1 e4 G1 D8 J/ k
% f. F! z, s0 H3 p7 Z& s( l( |to update-neighbor-total
/ p3 l6 `  w' Y7 _" @% @  C
( X0 W4 N& z4 e+ Zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ }$ U& a" i3 n3 s1 M' j3 u
2 k, M& B# N, g0 P3 l8 U

# j* t5 p& }( e/ H5 Y$ g6 jend
, P4 i" I4 v  h8 {6 L9 r$ q, B) |+ [
to update-credibility-ijl 9 q7 m+ ~5 B7 V! ?

" b  B5 f: I! L+ d7 ^;;
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。: J1 d1 x4 p; |: @! [# U/ p
let l 0
, h) L0 I1 Z# I  iwhile[ l < people ]
+ \% g( k) ?7 D' ~/ c;;
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6 x' y) Y' k3 b# L
[9 K: z+ {8 i5 J* ?/ I0 U! N* y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ C; {7 j. M2 b2 y* uif (trade-record-one-j-l-len > 3)
& z8 a6 _+ A4 I[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- i' h, k+ Y5 B0 K: L
let i 31 h) |0 u: j) J9 j
let sum-time 0
, K$ \) G/ D% O$ Kwhile[i < trade-record-one-len]
5 g, w$ V0 T( Z7 u3 d[
9 p* ~8 v0 W7 o1 {: p+ h0 tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). u3 d% [6 V. r, w2 y
set i( y% S- D! x( W0 h+ u2 `: m2 \
( i + 1)

! N) W( v$ W9 H4 \; H, m# o]
! \" [' [8 m, g5 y, llet credibility-i-j-l 0
0 V6 Q% b2 ^6 U  S. \. F;;i
评价(jjl的评价)1 T5 Y/ E" ~1 w& p# o. u
let j 3/ j* e' H  k5 n: \; H
let k 4
3 R1 T- i5 H# @* L" y4 vwhile[j < trade-record-one-len]
* X2 z- ~4 b/ \* O! U9 v[
0 C' W6 ?4 Q* [$ |, G6 Dwhile [((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9 r/ C3 s% m/ H! C, l! x
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)% b- |7 A" a" z7 K  N2 `
set j" N; {/ b8 b' w
( j + 1)

% h& y/ ^+ H% g+ `2 i! C7 r+ k], U* O6 k  d9 S1 l1 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 ))( d8 P% |; d) V# b' g( @- r, v5 s" _

; O/ _5 K; {% O7 a$ H

/ h/ C4 [& J7 \- O, Olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: V  A" L/ l$ b;;
及时更新il的评价质量的评价  d0 z: P  B2 q# }& O( m
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! t$ L( t! [  K) l0 L5 V( F) i
set l (l + 1)
( M7 e/ H% H' w: i0 e. G5 d0 c]
* F" x3 I& E4 U2 R; S; Yend
# @7 O  C% C; ?4 ~2 A% N$ W/ z" q) j; I- c; u) r& H6 H; @% \2 r
to update-credibility-list
) m# n2 H; {8 B! o# o8 Qlet i 0
2 x  q8 k$ k7 b. y  Cwhile[i < people]# l/ V4 u5 C9 f
[
! N$ g% k) f7 Z- elet j 0
8 d& f$ J9 H& f6 m) N1 l  _let note 0
% }1 V' K7 c, b" t% `let k 0
. o/ y% G7 t  F' C2 I+ j;;
计作出过评价的邻居节点的数目& C, {& n2 W! h1 k8 {5 R. q
while[j < people]
) F4 ?; \5 ]. V* j3 Q$ h[5 ~% f7 j( G1 C' X- a
if (item j( [credibility] of turtle (i + 1)) != -1)  [8 I. b$ H7 n  P! {$ t
;;
判断是否给本turtle的评价质量做出过评价的节点5 b# D. U! W# p: B3 V. k1 v0 |1 Q
[set note (note + item j ([credibility]of turtle (i + 1)))
% q0 S# l7 ]2 X! E% p  ]0 y;;*(exp (-(people - 2)))/(people - 2))]

9 k/ u. K/ D" L2 pset k (k + 1)6 r! ~# e! V& I* _1 B# x
]4 Q% L; L# d8 d' Q; P
set j (j + 1)
8 v. e- e4 U) w( ~]! K, o3 h+ k4 q8 q
set note (note *(exp (- (1 / k)))/ k)1 W, h$ U! u1 F; g3 v
set credibility-list (replace-item i credibility-list note)
# P% u( p+ w- J4 ~' sset i (i + 1)
- q/ E- p$ ~, Z& O6 X]
) }9 r  C, q8 I+ I# ?end9 h6 s+ O% ]2 j- ~8 n

* j5 D7 E/ A; U0 e3 r" C- p7 {* gto update-global-reputation-list6 ]& M; y- _$ A1 `9 K/ Y+ ^" C
let j 0$ b. f; }0 U9 I9 X+ \
while[j < people]0 i8 R1 n+ F7 o. e! s" U. ?  |+ I
[8 V; l" [# k0 U. E8 o: m
let new 0! Y0 d5 f! x2 y" {# P; i% g
;;
暂存新的一个全局声誉* R  }$ D" [' S
let i 02 M) z" B3 k, t& M; c# f8 j  T3 W
let sum-money 02 P4 F% S0 l6 ?: _4 ^$ P1 g) f6 Q
let credibility-money 0
4 ~( u1 B, k: n0 v5 h, w5 W6 \while [i < people]
: s* k% j; H3 f8 a5 T[
- f0 {* Q% ^! N2 E, d, L6 T; Q9 m7 rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 }' y1 G6 `3 U9 d6 [' T& @
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ s9 N2 ?- s" S- m4 Z3 y# L
set i (i + 1)# X! n7 `( S. j, O+ a9 D% e
]
' N* D8 \; ?1 m2 h  O+ Flet k 0
* \5 E- N3 D0 @- ~" Z. blet new1 0: O; U0 B: a. P8 K0 }
while [k < people]
' |% F3 W+ e0 B- M[+ v! k0 g4 j' c) z  V8 N
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)+ C( O, W) m. a
set k (k + 1)
8 [9 W" @" ?( h) z$ X" l3 T5 O$ L]
7 l' r* d+ B* Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 T- T5 g* K+ pset global-reputation-list (replace-item j global-reputation-list new)' E, h0 k8 U+ H6 i- Q8 \; n
set j (j + 1)) B) `4 }4 p9 L
], S$ o, A! ~2 X) Q3 l1 Z
end
/ n6 v; w+ n2 c  D( {0 J- b  J+ K0 _2 Y1 b
) H6 Q4 ?. n# e+ F% e
1 Y' M7 c4 @, w! {/ P
to get-color
) n7 v2 L  t  ?" P
1 N, w9 S7 I2 x+ Z; \. {1 nset color blue
1 N" I- g- w; a* D2 |
end2 K0 M! c7 p* i4 C) T9 S7 w

5 d: @( \& B4 L# m+ ]* u, `1 Wto poll-class
. a$ V* v9 Z8 aend5 m, N% R* |4 q$ W. B

$ f  z% i- Y+ T9 l# ?, a% qto setup-plot1
. {4 M/ m) ^" P, q6 v& K2 o" H* Z7 X8 c/ q5 d7 |) q+ W
set-current-plot "Trends-of-Local-reputation"
' _2 i. J& ?3 ^9 L# U* S

0 f) i2 z3 X; P- N! a  z6 Eset-plot-x-range 0 xmax

/ X6 J; `7 x3 i2 h9 d
1 W0 [4 y3 B& i6 gset-plot-y-range 0.0 ymax
4 e, ^1 q1 k/ t
end
$ D: |( U/ D# \3 Q' C2 t6 M4 v$ U9 X8 a! k) j7 |
to setup-plot2: h  f- G: O" s/ U/ U3 _: H  J. y

4 c8 ~% z% a3 `, T! l1 Xset-current-plot "Trends-of-global-reputation"

' ?/ k; }5 G8 T$ [& h0 K, Z( l; s" W' m3 O
set-plot-x-range 0 xmax

( D; ]* i) |6 Y  `& [
7 B/ {7 C9 e: ~set-plot-y-range 0.0 ymax
( z5 o7 r% a9 r; M" Y& e
end, f+ e2 H- N9 Q0 j( @' \

: G( e# h$ J1 T* p. e0 rto setup-plot37 }& M! v9 ~& Y' U

9 n% ]- e3 l6 I4 n4 Kset-current-plot "Trends-of-credibility"

4 m' b) z# L& V2 n) G
) y$ r& [* I6 I+ @- s* Nset-plot-x-range 0 xmax

8 S) Y" H+ @4 g# n1 \
% b+ G7 C  k, A8 E, L$ A4 Lset-plot-y-range 0.0 ymax
! ~' A2 \3 u; }
end% E5 b3 b; j2 @! i

7 M+ N5 _  R' H& F$ pto do-plots; b( Q( L- M# K/ Y& l. |/ b
set-current-plot "Trends-of-Local-reputation". I$ J7 w/ ^3 v
set-current-plot-pen "Honest service"
6 @9 a8 s4 V. Z- d- lend
5 j0 Z2 f3 P. m; n
! r- V+ o5 Q4 i[ 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.
5 \5 f% H3 l0 W. U4 D* ]( Y+ R2 _/ H7 x/ u. ^5 o7 e% J  u. u5 j
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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