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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:  q! H* I) o7 Y5 ]; d" l
to do-business % z" V. r: N0 X" I0 O/ s, Q" S
rt random 360
9 N$ z# l- A! V" ]" l! P fd 1
# K) {0 B3 _% X+ d1 O; \8 |9 Q4 `0 F ifelse(other turtles-here != nobody)[
$ [3 m7 U6 M; y. {, p   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.9 ]9 @) A- |8 H* l/ ?0 `1 p7 ?. ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 |& V8 P$ B: I6 Y& ?- I3 P
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; g& S0 f  Q' I! f- }2 l2 n' x
   set [trade-record-one-len] of self length [trade-record-one] of self" W" o  u/ C7 c* N
   set trade-record-current( list (timer) (random money-upper-limit))
  }  Z" r! P, c6 I1 o7 R1 B" p) h3 w+ Z) F3 @. f3 P* I- j
问题的提示如下:, L! y: p* E6 u/ h+ w
2 `. `; P4 B/ x/ C/ d
error while turtle 50 running OF in procedure DO-BUSINESS
7 x5 A; I! u+ ^8 @# L' m  called by procedure GO
% F/ K& o8 Q0 _3 F3 T0 gOF expected input to be a turtle agentset or turtle but got NOBODY instead.( e) D/ C0 i- H
(halted running of go)4 K; Y6 w6 S5 {4 n8 @2 W
; o: b# o( Y; ~( a% I
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 i( z: s" R, Q$ H( 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; R' n2 q0 W* i5 k
globals[' v- T8 \9 `1 U6 L; L$ F+ I
xmax
% ^: p8 l2 x  H5 D+ vymax
/ a; s( C, P3 f% y5 p0 o  pglobal-reputation-list
6 h: ]! D$ X: H/ H) Z, N2 [4 W& Z" k$ t5 b
;;
每一个turtle的全局声誉都存在此LIST& O) p9 S8 }5 Q+ Y* O
credibility-list2 w' x1 \2 A; m5 g* _
;;
每一个turtle的评价可信度, C* B9 F, G% W/ a$ D
honest-service
$ P1 s+ \  X) T* z3 O2 ^unhonest-service4 b- e8 [3 g- ~: P1 F
oscillation7 T) I% }1 |" C1 B1 `9 H, b
rand-dynamic4 ~8 N% E/ i, }7 P! l5 m- K
]
. A2 L3 g4 r/ V) S& y8 u# A5 X6 P4 C1 V( C
turtles-own[9 C# ]  |% Q3 q
trade-record-all
1 d3 r( Y1 j/ {- u2 Q% _;;a list of lists,
trade-record-one组成
, L( R. s% n3 d8 F7 j! ?' P# U) qtrade-record-one- b) N5 F- s5 M3 q! K8 Q! Y- q& l+ w+ X
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 s' o8 B% |) b/ \! H8 w" y! C
" |0 c2 f" l) X1 h  E;;[
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]]
5 X& S9 p1 m6 ]5 ]1 i$ ]7 ?4 J0 F2 O0 Utrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
! K6 R% r/ w  ~6 H; Ncredibility-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list1 }# T/ d4 N, q  b
neighbor-total( _" {8 s* r$ o. h7 _* L; Q
;;
记录该turtle的邻居节点的数目3 o* [+ l* P! b6 ]" N2 s7 S# V
trade-time" t6 t# F1 R( [* B% g( `  ^
;;
当前发生交易的turtle的交易时间
7 ]) B- b' Y  l4 o# jappraise-give
$ J5 ~+ D" e- Z3 p3 f+ G;;
当前发生交易时给出的评价
( n7 e4 g7 d' w$ q6 V7 rappraise-receive: x3 U' |# s! b! d- w$ c% F+ c
;;
当前发生交易时收到的评价2 @4 {# c4 Z' D9 a% \0 j) R
appraise-time
- ~2 ]/ t+ v0 h& N6 x;;
当前发生交易时的评价时间# |; ~1 {# a/ E6 F) i; w  |) B
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ X  s+ W0 \, O+ v5 h7 strade-times-total% R' I! v+ m0 ]1 Y2 h: O" S
;;
与当前turtle的交易总次数. V; c" \8 ?2 K! W$ F; I4 }4 t9 N
trade-money-total* |# {7 n2 X  y  J2 w; N
;;
与当前turtle的交易总金额
9 h& P8 o# ~& \9 J: o$ E3 klocal-reputation
9 t2 ~( ]1 U; p: Mglobal-reputation- a7 r/ h, n6 x5 B  `3 s5 \
credibility7 e( x# A, f) o& Q# }) ~2 y- z
;;
评价可信度,每次交易后都需要更新. w: m0 s1 g" F- x/ C0 W/ P2 v+ s
credibility-all
, M7 ^7 e/ F$ [3 u2 S; M1 K# V;;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
; m4 K. N* k* T& ^
! L! I* ]& `9 Y8 [;;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
. x: s/ E* T& l1 Dcredibility-one
  b. k# l8 P  l* H;;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people9 I9 B$ P9 b1 c; `! P' L
global-proportion$ T4 p! \- I0 T5 b9 c9 B
customer, T' J+ e" N/ ]9 |- w
customer-no: W4 z& O; b6 W" T7 [, b! g
trust-ok
- C) K1 I6 \! U0 [trade-record-one-len;;trade-record-one的长度5 N9 G3 n1 x2 z6 q) j+ U' H. L
]
7 n9 h, J" N2 A# V9 `4 u
$ D3 r4 ]1 U! X6 R" c& Y, g;;setup procedure5 G5 U- o2 p! J. d/ O

$ i+ s0 J, u! j: h6 w/ E8 Z& [2 rto setup
  d: }$ ~5 g! K
% S; D5 u+ S& V) {( Oca

* [6 I6 |- f( q& Q) F) f$ L% @& F7 j+ w( b# V9 y  z. U5 E
initialize-settings

5 Q. l% _& J9 M2 K/ q0 h
, M9 `8 M' G7 `crt people [setup-turtles]
# a& M! r; S' j/ z  ~

! S5 j, O1 [/ u7 Z( {: }2 L! jreset-timer

/ O! m3 U( N% n. f
, n7 Z* ~4 X( j. V$ J# Dpoll-class
6 e# c8 o( o; A! ]

2 A! m& r) u. b# s( t1 {; G' osetup-plots
1 p' S0 j& C: @% B" x0 ?
. j1 }7 K2 f, K) ^% C; l
do-plots

3 q" G2 h5 S2 H1 x  `0 V# iend' O+ [% b5 ]3 Y; L! K2 W5 A
5 Y3 ?" M# Y9 f- D, S
to initialize-settings
# V0 s! }9 H* ^, ?( `
, s' V2 J7 k! Z, E3 N. qset global-reputation-list []

7 Q3 x# ~. G/ y, Z3 Y5 |! X) ~. f0 A
set credibility-list n-values people [0.5]
- q) g' E, [4 I9 C' B  f' |5 f

* n3 R0 X3 Y* r$ w, Cset honest-service 0
. I: D, r6 [3 V3 ^/ ]% U* i7 V
0 r8 I# d! z* r( Z
set unhonest-service 0

' Z1 w& Y0 J3 O7 ]7 W, f# u) R
3 l7 G0 o- {, G) X0 Y6 Yset oscillation 0

, F6 B# A* O6 Z/ F' S0 s7 @6 T$ x
set rand-dynamic 0

3 R, b( J! ~! I1 W0 |end5 a( k# Z- d" O+ s* o- y2 ?
( N* }' a( p" M
to setup-turtles , l4 D, a. X5 p# ?
set shape "person"6 R, c4 h9 i# S/ P2 s
setxy random-xcor random-ycor! C$ C+ M* f* J) `8 X
set trade-record-one []+ V" N' N- A. M! e6 Y( g

- q7 ~4 t! Y9 Aset trade-record-all n-values people [(list (? + 1) 0 0)] % q; b. g6 [9 ?7 f3 w! Y' v, i8 V2 T
! o5 h7 a  ^' v- ~1 N
set trade-record-current []: I5 }2 U0 Y( E, c3 E6 i
set credibility-receive [], _3 M/ A! f0 t  e
set local-reputation 0.5
# |, p8 N: @) H' F- t1 Y1 pset neighbor-total 02 e. s: z  Z, H- Q* T1 h
set trade-times-total 0/ d/ v6 ?4 J/ e, \: T/ B2 m
set trade-money-total 0! `& u% p4 U" Q" i& c' U
set customer nobody% b; q. Y/ i' L
set credibility-all n-values people [creat-credibility]" R/ W5 W# `5 d% n
set credibility n-values people [-1]
6 f( y: Y) r: E$ aget-color  y: C) q+ `% Q  y* U

" l, L& E5 X* u5 V9 @: F! m$ q, u. qend) X# q6 d) Z6 L- z/ K1 q* w/ t

9 C2 w9 R5 M) {4 w+ Xto-report creat-credibility
. V" j* [9 r) Y# _  u# t+ F, Ereport n-values people [0.5]
  ]0 ~' n! M/ F: w: F7 b, G; s: lend
" [9 w8 l% i, q" }- X7 W) O$ l8 |* U& u
to setup-plots
% K  v4 x, M: r$ K
' Z; j; L0 V2 r3 ?# Cset xmax 30

) a9 z2 o) G: E4 ^
( j% _* F. ^4 p/ q; z% F( b+ yset ymax 1.0
# G7 B) S1 h& j( U. P( t. z
- ^) [# J  k: @4 y& L- h
clear-all-plots
) S1 x6 d+ L4 J7 r+ v
0 _" H! Y3 D0 a7 n1 y7 g3 G
setup-plot1
7 q7 e) e$ t) A" c5 H4 E
, N& j% H* J$ M. ]" S4 ]: C& s
setup-plot2
( N! g9 g8 V, y

( s# d9 N/ F* _) N8 `setup-plot3

" m% g0 ^( Y% h( a! r' xend
. L& `$ J+ n" A" u$ s0 o' ^8 p8 D4 G
;;run time procedures3 x3 `* l2 k' x+ _7 m4 ?9 s' T' {- s

# j" m# t7 x- o+ I1 bto go5 Y3 K9 W- O7 j& m9 j! q
6 f/ [' e7 c& M: w0 l& e
ask turtles [do-business]

& _# z! R. @* m; ~! lend3 C' v4 G/ e6 V0 i+ K

+ J" @5 }- X4 m$ P' X; |  R  A3 |to do-business 7 J( k# g: T+ d; F- c2 Q) Y  `7 H
8 |3 i7 o, Q/ i' |! p7 c

2 A; P; a: K0 h' F% Y* t- ?rt random 360
+ Y6 y* m1 G/ |" Y5 y2 ~

! \, j0 I6 Z( X. ffd 1

# l) h2 S' W; S. u- `  @
* D/ e# x" x2 `ifelse(other turtles-here != nobody)[
+ P2 A  M" l; _2 z

4 W. X/ u  g3 E; E7 @& |  v7 ^set customer one-of other turtles-here

% _* g6 k- @. M  m  f" p  z
& m8 @  p. t) [0 }/ G4 p4 g. y$ Y;; set [customer] of customer myself
3 L4 K( h' X* f# M. a

6 w- p4 Z. P: m4 `; M( dset [trade-record-one] of self item (([who] of customer) - 1)- O& C5 N2 Z% k7 Z1 p8 k; O$ Z
[trade-record-all]of self7 u, K5 ?5 C' p( D
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, p( b: |6 w3 }# F$ U! e: D: x$ f
+ \4 R% m8 t( P; v
set [trade-record-one] of customer item (([who] of self) - 1)
8 A  ^$ f  K3 a8 c! w  U[trade-record-all]of customer

  m. ^, z8 {! v, n1 V6 L
8 B" l7 @" o. q, q# v# U, u; {set [trade-record-one-len] of self length [trade-record-one] of self
( ~) ?" A; m8 Q0 [3 D- M

' H* T6 h' }/ v" G" T7 \set trade-record-current( list (timer) (random money-upper-limit))
' G% K0 N; ~# a1 I  p5 u
$ h4 f9 V) v; A6 Z
ask self [do-trust]
' |7 R" D* z& W* D, i* }' u;;
先求ij的信任度. G* q0 k& H+ d5 g) L4 _
5 S% w3 v" ?5 y0 }% P
if ([trust-ok] of self)' W2 W2 ~2 T3 U/ z
;;
根据ij的信任度来决定是否与j进行交易[
% M8 f) |. [) j6 s) Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, d* j8 R0 Q4 V6 C: R; w+ O+ U& D! z& P! v
[
8 k! y" d7 u. q, u# r
0 H6 r  l: O) D, H7 a" V6 o
do-trade
+ {* }/ K7 q$ [, E+ u; @  y
7 O7 J: ~6 P  S% S+ \
update-credibility-ijl
/ U5 {; B2 F3 a5 y$ d4 @
- U3 V! h) O* l: ?
update-credibility-list/ {7 t, @' Y, }! o- t: l8 I
3 m- g8 z" n6 r5 t+ n
, g5 K* i5 Y4 K! q# Y6 v
update-global-reputation-list

0 @% ]: q/ t3 N  s  I) _# {
# M2 n" z' O0 J" m0 g3 ^/ T, @poll-class
: y, P5 ~, A6 H( j

1 W* q3 M9 i1 S/ }6 P6 xget-color
9 m( J' }! f/ S

8 v- f$ d' s! D& A5 h]]
1 Y; Y* v0 K3 p4 t# e" M: }- o1 W: Y3 J4 Q
;;
如果所得的信任度满足条件,则进行交易
: Q5 D) F8 W, i9 Z8 f$ \8 p5 u! y; `& }# {* J( L$ |2 y# Q4 W
[
8 |; H1 A. B4 j9 d
$ G+ U; ^  z# y* E8 w
rt random 360
# z" }: }; w; z

( |% o9 y8 u6 K  efd 1

' [7 o0 B0 t3 ?; @0 Q1 ~, R
3 D" k, t# r$ l+ T7 a, i" ]0 y6 e]

1 t7 F+ m1 D' `
& O6 x( C/ M( D+ _" Y8 {end

, L9 p- K* H  I. C, F, h$ y6 K
' c" l6 L6 v4 Q0 wto do-trust
+ c/ d; ~' z3 v- J+ B3 _& jset trust-ok False
: m; X: J, f5 g! [
$ W& R" L3 `3 M7 P  }

4 [0 {0 ?4 A, q. `let max-trade-times 0
5 ?" K5 @2 a/ y" ^2 Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* C4 Q8 h2 {5 G2 Z6 ^6 f
let max-trade-money 0
# A/ b: d9 ?: e1 h+ r8 tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* J1 f( t- I: a! ^. z0 c9 M
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ I8 y! w6 V5 r" ?9 Q, R. y- E

2 d+ |4 R) e: ^! E

; W; h  U4 d0 S* m  ?+ h; ?get-global-proportion
' v! J% V! s5 T9 ulet trust-value
1 f) ]; F$ V5 M! Y5 m; `  Z4 ]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)

6 W7 R% L) r9 a, o2 }if(trust-value > trade-trust-value)
) h/ u, m9 N  n[set trust-ok true]! X& o& N0 f* Z' m% H% v2 q/ c: ]
end, X/ Q  l! ~4 p
' _. f' O% p' `- M6 F, r
to get-global-proportion
( F  B# J; z$ P4 }5 w6 u" e9 Gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! h- k3 W2 C& w) T! S! ]0 U[set global-proportion 0]4 X! D+ I: D/ b$ X" i; Q) ]
[let i 0
& @2 L: e6 X5 u6 g# M1 G$ G: Clet sum-money 0& d/ b8 N' A* X) Q
while[ i < people]
: q8 Y+ A$ Q# K0 ~[. H2 I& {! t  w& t
if( length (item i, ]; H3 c0 p& j
[trade-record-all] of customer) > 3 )

- E3 `6 R( S% V# E4 Y) O[
5 U5 z% x) e' S1 @& y! g! Qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 F# k" T( w! [9 O' l; S]
8 _' J1 W" h3 V1 n" `% m+ S]  N1 P# K( l9 J  q9 ]
let j 0
. _2 i; E5 i, ^" }; X/ xlet note 0! N. P7 H" ~0 v$ Z) a+ g
while[ j < people]+ ?8 P# q4 C- M! C
[* w9 @+ M' H& r) a( s. @
if( length (item i
! ?; R, P  s! s: M[trade-record-all] of customer) > 3 )
! w2 K% g; c: @( B+ B
[$ g% q  ?9 V- Q9 i' _
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 |2 u. X0 P: E1 e
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 E9 h( T( P# U- E
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- v' x, D& f5 h; Y$ u& k- z]
! N: n  p  p# L5 `/ @; r" h]
& ^' |! e1 r; S- I  W: I3 \set global-proportion note
+ t  n! j2 \6 @8 @2 r]. d0 J9 f2 m# |# C( \% _
end! F( m" k, I+ y4 D/ ~& i, p! {

3 |8 k' d$ X& G  A% s' r6 o' Xto do-trade* O9 t4 g4 f& z' E
;;
这个过程实际上是给双方作出评价的过程
7 l- h+ O* p, `) [$ S5 S4 i& Q" vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" B& U  X, W) Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ L# B- d& Q1 Uset trade-record-current lput(timer) trade-record-current
+ w- c0 ]: y# y- {9 }0 R$ v+ P  o, Y6 N;;
评价时间+ }6 I' v  _2 t* J& c/ f; F8 g
ask myself [( R' @: y1 e1 ?
update-local-reputation
' s) E! t- X2 t3 M/ k. {* X( `set trade-record-current lput([local-reputation] of myself) trade-record-current
& I% i$ P' ]* ], M' W+ w]% b' O2 Q2 ^8 w* r; M7 v6 d$ d- d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' L3 f# D3 ?6 H! S9 j
;;
将此次交易的记录加入到trade-record-one( H. P% [) A, P; t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 t2 [6 C1 k3 O: G
let note (item 2 trade-record-current )6 q8 u* K7 s6 i' f1 {8 L# P+ y, `' y
set trade-record-current4 D& L$ J8 R) C7 |4 M( R( ]5 ?
(replace-item 2 trade-record-current (item 3 trade-record-current))

) G0 f1 g4 {3 i9 iset trade-record-current; s2 S# e8 R6 V, C
(replace-item 3 trade-record-current note)
+ ?7 V$ g5 R$ a/ o& i7 F  P2 D* r2 q& ~

3 E' Z+ H: d; W1 |+ s; sask customer [2 ]) F5 u$ N+ D5 _/ C' k9 R
update-local-reputation
6 w4 c; w, G2 }, {$ Sset trade-record-current
# i3 a! e6 r/ F: f+ |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  o2 W9 \/ c8 P/ m" y1 a/ g6 z
]+ W5 }0 o7 P$ B# C% g

+ a) Z9 c& c% M+ k" g$ V, H

2 P* v4 I8 j) b7 Cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# o3 `4 J  D$ \% z, s8 V. e/ I

% j8 q8 L2 d4 s; Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* i- u" Q. I# y* t, \;;
将此次交易的记录加入到customertrade-record-all
# t, V1 B  |  }4 E: ~end
1 j" {7 i& r( j7 ]9 V( U# ]9 J- c8 [0 o; m1 ^
to update-local-reputation
& s* V5 Z$ y5 y7 Y2 Rset [trade-record-one-len] of myself length [trade-record-one] of myself' N+ n* ], F8 Q! q" E. U
% p' y9 e% u8 L* g
4 A, S# r9 d, U, a! B8 s
;;if [trade-record-one-len] of myself > 3

  ]+ u# j7 X- H7 H: gupdate-neighbor-total
0 q. t4 r9 k6 F1 T: G+ {8 W;;
更新邻居节点的数目,在此进行
/ V+ \- y% i, l- q3 |5 i& blet i 3
& T4 D& f# W# R/ Hlet sum-time 02 E3 D( G: D; z# s; j
while[i < [trade-record-one-len] of myself]
  o& V5 T! \' j$ i* T0 S+ U: h2 P[: I" k0 g6 ^5 k2 ], }! W
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): ^+ |5 B- p" X4 }/ P
set i* {1 e3 e: q' L
( i + 1)

6 |& X- [/ u+ L( x- U3 j& H3 O]
7 r3 ^, X, c8 J. ylet j 3. R* C2 S) r# w# v! e/ M& e% ^
let sum-money 0* K! h! r8 ]1 b9 h
while[j < [trade-record-one-len] of myself]
% b4 _7 g6 A% U% D[3 N2 g7 a; W+ O  X$ L; \4 I
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)
+ E. a6 F$ e% j% f5 m$ T5 @set j+ m& Q; P9 d# d7 M- v4 G5 X
( j + 1)

4 ?3 k' `% a6 T7 u+ L]. [% J9 r6 z6 k2 W
let k 3
9 I3 h; l* {' Z* f6 h; W) Nlet power 0
4 E% o; A3 O. ~  {let local 05 o# p! t, m0 m
while [k <[trade-record-one-len] of myself]* Y& u1 ?( ^7 o2 D% r, t
[
: B. E; ^6 U% l1 e4 ]/ mset 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) 2 Z; j9 }) Q" O9 D9 j8 E& l: k
set k (k + 1)) Y" J& v# ^& s2 Z0 F% D" [+ C  d
]5 ]9 ~. [" A5 h) v7 |' o
set [local-reputation] of myself (local)3 ]% J! ]6 d6 L4 ?4 H* K, o: q
end
, P( B3 I) r  T4 l( w
3 r; z! ?' `8 I" \3 n$ R, hto update-neighbor-total' x- _( x# o" C# k' ~

4 w, `$ n: w. e, ~if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' X  X# U8 u. l! a* |3 B
/ f0 N" O4 J6 G3 _0 r& R) T5 [2 v

# D+ H9 K! H+ L$ R) j- \end
0 b0 \5 _/ c: T  o3 }( H1 z$ [* k/ b5 w# n5 ?/ X
to update-credibility-ijl
1 k- Y# v& h+ E/ m+ o1 S
% ~7 W' y/ \; h;;
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。: J- l6 H9 q6 H( E8 w( y! i
let l 0! c1 k/ G5 `% O# S' \
while[ l < people ]# J0 ^1 S) U% s7 H; s
;;
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" {0 F6 @8 C! ~$ ^: i. L3 S8 E: |
[. ?' T( e" L8 G' f! K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ w+ D3 @" l% |$ \# A/ z9 k
if (trade-record-one-j-l-len > 3)
, N3 y9 o( q2 b+ v+ l9 J[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
) ?8 z' z& M, s, @! |4 ]3 R* u3 rlet i 3
! v0 [5 L/ x7 |0 Hlet sum-time 0
4 N4 _. ^  M3 o6 `while[i < trade-record-one-len]/ a1 E* @2 |" f2 ^( V. L" a
[
' g& y- \7 o+ v9 c7 Nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' S4 A' a: x$ H& M1 \3 L. g4 Q
set i
0 J$ H' ^' \6 }- p  d' X' G( i + 1)
  o/ b" B( f( T, |2 x0 y
]
4 ]' d- y' W1 h" Wlet credibility-i-j-l 0* k  B" Q1 ~% E! X6 l) Y
;;i
评价(jjl的评价)3 t. a2 `6 g  U! \
let j 3* z; z% d+ X4 s- i/ D
let k 4: J$ c$ \0 f5 C" ^3 N" H) O
while[j < trade-record-one-len]
7 n) C5 E6 s6 z( ^[/ ^2 }* B1 d  o1 u) W* Z
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉3 t& h1 J+ [+ b$ O% D6 H
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)
6 |, }! L6 z" z# D, s  hset j
& W2 }& n8 ?  B" c( j + 1)

7 k0 E3 b' z( z8 z9 c5 x]
' q! [* H) }5 N# ~5 ~2 l% d/ Rset [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 ))9 c' R0 ~; u9 {  l2 _( L

: B- e# t- `2 _5 G* i( F+ h
2 n/ c& V0 X, a1 X( u( @6 \
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) f. G  @/ Y$ x. ~' y. P. J& m;;
及时更新il的评价质量的评价
+ A4 k9 y7 V) a. }) i. P' z1 S* Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 E, p3 E" P3 }set l (l + 1)2 t. `' y4 m. y; O% `
]
& B6 L9 x) h) a8 ?end
. J$ c: D( ^, U! g( ?4 \0 E! O; B. w# k8 S9 x
to update-credibility-list
, E9 `4 q3 x* T; ]9 M% N, B- klet i 01 ?5 h# j* c) `6 D
while[i < people]
2 y$ _7 h' a8 d6 S$ E# A+ d- k[
. Z6 @% l  }" r: c! ]let j 0
& J( g7 _: O3 Y- C) y# Ylet note 0
* N) O0 g) |( y+ S  }+ Ulet k 0
% J$ p! c0 o, [' A* _3 O3 @;;
计作出过评价的邻居节点的数目
  b* o/ X4 o+ A0 a7 V: M) I* Ywhile[j < people]
% j5 C' Q* c/ U" W$ N[
: m/ k' q7 a  z. j2 v7 iif (item j( [credibility] of turtle (i + 1)) != -1)
4 ^6 X- O0 E  C+ a5 \;;
判断是否给本turtle的评价质量做出过评价的节点- n3 p; A; O' U' C( _/ R: P& M
[set note (note + item j ([credibility]of turtle (i + 1)))) C# ~: Z' a9 l6 h4 g8 F
;;*(exp (-(people - 2)))/(people - 2))]

, X& G) x" @" z8 m4 _/ ^set k (k + 1)6 u: c' u! L  r5 e+ u) B
]
' }# i4 _2 C( a1 s% l) p7 dset j (j + 1)9 X0 [, d# }# d/ O# A
]# r, g2 z5 i# |
set note (note *(exp (- (1 / k)))/ k)
2 r6 U' `- d  N: ]" Aset credibility-list (replace-item i credibility-list note)1 Z8 |/ J7 W; K0 |( I0 I: t, z! k
set i (i + 1)/ g' x9 ?( X) u8 M! O$ K$ o2 N
]
1 a7 ^; z& e6 uend$ u6 s4 |1 d/ q8 v
. X6 o3 T* I3 _8 ^
to update-global-reputation-list8 |% b3 ?. P  m
let j 0
* L9 k3 K  }! }& f& Z. Ewhile[j < people]
# g5 V, }( p7 L8 M3 C! _6 D[
8 L, u' o& ~! _- Slet new 0& h; K9 V5 [% O" o4 s7 h
;;
暂存新的一个全局声誉; T4 u  R. T8 h% e5 L1 V
let i 0. J+ D- V' p- i  Y2 Z4 t: J  K
let sum-money 0" E5 X, x8 E. b/ c7 z. }
let credibility-money 0
: Q6 V  s8 U- _" _: swhile [i < people]6 C. @0 q- |% d0 V, d
[
4 z! n$ j4 w* S# O3 I* g8 W* D# C0 Oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' N% J% z& ^0 C
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% P( H  l% O: `, v6 v0 ]3 @3 P1 Aset i (i + 1)
. |/ w7 c8 I2 {]
  l, Y7 E5 y) c% l3 Slet k 0
' x. a7 v) u2 a& ^, ]/ n4 u4 `let new1 0
7 N& C" ?2 }$ Y. s, k8 fwhile [k < people]5 r0 ]- ]0 I+ S, Q& E7 W, R
[
/ b. U( E0 ?% o. b% W. K1 y. ^) i# Cset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)5 w  P8 j% p3 B
set k (k + 1)& ?5 L' J4 R' e
]9 a8 ?+ J+ o/ b' k( c* P$ A* C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' b* U6 s& ^7 M2 @7 g; Z, v8 ^# y% |
set global-reputation-list (replace-item j global-reputation-list new)3 `- K8 j, |1 a
set j (j + 1)1 ?' {- ~, x9 N- i* q9 y% _
]
) M3 u/ \1 ?% T0 jend
' R8 o3 s! A/ _
" U5 n( |! K* u0 a4 P; \
, o; b2 j6 [- X6 ]; g2 d) ~' }2 `# |4 s. S  y" ~7 m- P
to get-color
5 o+ n3 ~8 G6 B' D0 i3 ?& U+ ?
2 J5 \4 }' ~) t5 |2 w1 hset color blue
/ |- w3 r3 {! E1 e" L# {, v7 l" d
end/ I2 v! l4 `/ R( M

- v7 G" O9 m# d# xto poll-class1 h) q* P; U8 k6 r8 T
end8 m( [- e+ F/ o* m0 i
; m$ x  N" m  q- G+ }3 I
to setup-plot1  K. J1 `* r4 v" `
4 H( f2 T- b* O" v+ m
set-current-plot "Trends-of-Local-reputation"
: j' `, S! q" C( `" {4 I

1 I. S% {! j* W0 S+ {* Sset-plot-x-range 0 xmax

$ Z) B9 {3 }1 d. L# t. f
: F% d  F1 S' d, ?set-plot-y-range 0.0 ymax

* e$ {7 B$ B3 E  Iend1 o2 j% t3 U2 o: R+ j
* T2 u$ N+ h* y+ o6 D/ Q& g
to setup-plot2: p6 H! k/ _( @3 C) ?
) V4 `, M" {- |$ ^
set-current-plot "Trends-of-global-reputation"
0 ]+ H( Y$ v/ y5 Y* {
( Z( s; b& K( z8 K# l8 a" Q% }* }/ D  V
set-plot-x-range 0 xmax

2 l, q3 q* B* I8 y. |5 A/ X8 K3 y/ s7 ^/ |  Y& b
set-plot-y-range 0.0 ymax
8 i1 `: W) d$ \' X" f2 j
end
; F$ C% h  d" b3 r1 U4 w# _& p% w1 k
to setup-plot3
6 q6 w  k( b8 W  G- b' H
' j. m% s4 c& W1 ]) yset-current-plot "Trends-of-credibility"
7 D8 x8 b, G$ R; Z( |. x- w. X
8 g. w4 r* p3 c9 ^' Q4 y: Q* A7 \  a
set-plot-x-range 0 xmax

' z% ?3 u) R: }6 h) z, a2 y3 [/ q% ^# V3 T  W
set-plot-y-range 0.0 ymax
5 s, b& Y& h5 n# |3 M& h
end
* w; T" K. ^+ ~& ~  O4 {7 t1 {" T: y. a: N
to do-plots
/ S+ c0 J2 v% o) F, k$ Xset-current-plot "Trends-of-Local-reputation"
$ P) ]: Y0 ^5 X' aset-current-plot-pen "Honest service"9 _# r3 Z7 h' D) k
end
. y5 K4 X; f7 |1 A; l3 h8 `: ?$ o3 f2 G
[ 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.8 e4 g9 E2 @' G8 u% i+ U/ Q1 Y
4 M3 D- |" p# M- F
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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