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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:
- k4 T3 g6 [. n. W1 X! O+ j/ j' j- sto do-business 7 a1 n- w- s6 h! ~) i6 e4 c6 U$ N: ~& l" l
rt random 360: l; C; N7 P: g9 e) Z3 w; G
fd 1
" ~' L7 I/ G9 b3 M/ U" T ifelse(other turtles-here != nobody)[6 |5 d# z+ z! d* f! A- b3 d; F3 t
   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.5 Q# d$ L6 ~  b; r
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 P% r% h8 U3 n/ l% _) [6 b' n
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 ?  v+ ]8 I$ f# M  v( n
   set [trade-record-one-len] of self length [trade-record-one] of self
2 X2 B1 a) ~' M& [7 K   set trade-record-current( list (timer) (random money-upper-limit))
' Z5 B/ s8 S' D- S8 t4 o3 [( |
# T) u' w* R% L# _问题的提示如下:% N6 A9 w# Z% m2 v! @% o
# U) a" T+ L: c  A' ~
error while turtle 50 running OF in procedure DO-BUSINESS- I: N" A; k5 h: q8 U9 ?5 e) Z
  called by procedure GO
, F0 v  I: m7 N$ g* g7 h/ B5 vOF expected input to be a turtle agentset or turtle but got NOBODY instead.( q9 \& Q. E, p$ b3 x3 f% T  U
(halted running of go)
' S' m3 s6 N7 q( n
& y4 d; I3 y' P. ]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~~
" `0 |( q: b$ H2 _: b/ D( Z2 P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
  a2 n! n0 n* }# oglobals[
% j3 ?1 m5 D* @( P, W% y* U' y) Cxmax. ~2 P9 A- Q" f4 v/ N* |1 Y3 ]
ymax
/ ~4 F! K1 M* J7 c/ Qglobal-reputation-list
! Q+ @9 [* Q1 b) q
* r( L% n! v8 l9 _;;
每一个turtle的全局声誉都存在此LIST
; d- J9 W$ Y- |) ]. C9 g+ x  Lcredibility-list
2 y8 i! U) L/ E* E& G( j1 \% w9 P;;
每一个turtle的评价可信度
3 C# P  F. V( }6 J+ zhonest-service
! a, w/ L7 _7 N" G1 U/ Kunhonest-service7 ]2 n4 l) t3 ^$ H
oscillation
" |9 [5 h( z( Q" p8 Z& ^rand-dynamic4 W9 ]0 O4 B% }) s8 [9 g  R6 W
]( P+ }* }! x( Z* y% a3 z6 Y

9 I: e% G6 `$ l# o# Mturtles-own[7 ^3 ~3 C, S& T! P" g! S# `' g% r
trade-record-all5 S& L. Y, l' C, N
;;a list of lists,
trade-record-one组成
/ a! g' O! I: G. p, k. Y4 E% w. z$ strade-record-one
. S2 W+ g2 l3 |;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) o8 B9 r4 O5 \1 B* X( P% A
- v+ C9 V, F% V0 E4 L;;[
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]]2 E+ C( t& x( n" E: n% T4 V5 m
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
: I8 Q: C! w% A- @- R* i) qcredibility-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# Y, c# d0 O$ q+ A5 D- Z; P8 s' I& E2 U
neighbor-total# W4 ^2 v# z) ?5 e9 W4 `9 h
;;
记录该turtle的邻居节点的数目- h5 u$ s4 l0 j5 f
trade-time
. {# s7 \7 v! f4 N" O;;
当前发生交易的turtle的交易时间+ G5 _; u& E' t2 r: z
appraise-give# K) O! R! }$ G9 h# u' k$ W- V* @& s  `
;;
当前发生交易时给出的评价. y( W: |1 Y* \6 c- B
appraise-receive
# p# h3 U5 L1 k3 n2 y  ]! J;;
当前发生交易时收到的评价
5 r: O  m, T. happraise-time) U6 F, u. O  [
;;
当前发生交易时的评价时间; E) L2 }! v  p+ |
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, A/ u# t' i6 }" N; n
trade-times-total
/ e. m: ~3 m7 `, \0 l;;
与当前turtle的交易总次数$ o2 E3 i# q, }9 [' u' z" L  x
trade-money-total; o' T. e2 p  E
;;
与当前turtle的交易总金额+ x& M  |1 t/ D$ j- ^
local-reputation7 I' ~. a6 ]: ?. W, N; P  p% z) U7 n1 X
global-reputation
' x+ T2 G5 p1 F( Z, u5 ^- c. hcredibility; y- P. }6 A1 m+ l. G2 s
;;
评价可信度,每次交易后都需要更新
7 r0 f4 N( N( H  w# E' |credibility-all6 T+ L8 W+ F# |& x, A
;;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: r; d/ ~( v3 N# b

! B0 O1 P& I( d;;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
1 H9 A* G5 @# f( X( Bcredibility-one
) f( U+ H/ Z: a  r5 D: A! g9 o. U. ];;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
; o2 X2 H& C8 {: L- L5 fglobal-proportion
) q1 L5 V! J9 z" c7 m0 Vcustomer
% t, |6 W& v7 N; I8 H. h. F$ vcustomer-no
6 I+ l' L" ~2 I* o4 F" b+ _+ P) ftrust-ok0 Z+ }, @, p  T1 i- e. E+ ~4 H5 f
trade-record-one-len;;trade-record-one的长度& Z( I2 b4 C- Y' y; O0 I' s- r/ A$ K
]1 I8 [9 Q) J: q* [; [
7 g! {$ ~8 {7 F' k# f8 p" o. K: Q
;;setup procedure
8 u/ g0 L* X6 P( \. r8 z6 z$ I7 o  O( j; @7 U0 V/ z4 g; B" h. c+ ]& C
to setup+ M% b8 w$ D8 R
9 `  H$ a- N3 d7 q: v
ca

/ D4 d" W* k/ b5 N
$ j* Y( y1 K, t4 R) Z  Oinitialize-settings

1 {3 y' j: M3 }) E( P* C' Z/ i8 z  _( Q
crt people [setup-turtles]
' U* C% C+ y: A  f
6 H- P) Q' X$ x6 t) [
reset-timer
  Z& M) i- z) \' ]" K
% ^3 \& ^( M+ R: c6 c- r- v! z# N
poll-class

% w  ?* M& }8 v( l- V
$ j$ ]: u. Y. c; Z0 hsetup-plots
% L3 ~! D1 Z7 Z2 H* C# k1 b* U

2 X" Z1 X: U9 J/ ~; V" ?0 gdo-plots

) U# b3 X8 {, \% @end' x6 |8 }. V8 T1 @2 p$ @/ |

" q. d0 i9 ^7 Q' G2 Qto initialize-settings0 w2 j( ]- g% t7 J: t- X7 v( h5 T$ h

' Z7 l- V. p. s5 hset global-reputation-list []
7 J  D5 \) F/ N! U8 H8 e% z
4 L+ E: q0 K6 \/ l, @5 T
set credibility-list n-values people [0.5]
+ r& n1 h6 X0 M9 m! z) q. i

( `* j( h& A9 L4 x& zset honest-service 0
5 e- [' p9 j- U

* t- N9 k7 F2 e* S/ m' n' uset unhonest-service 0

7 f& [# k% Q2 O) d7 g$ h( s9 n- M. Q& [- ^
set oscillation 0
* }8 N4 ?- e7 a. a: i" J9 X
- N+ g! `9 y: J$ L( U" e
set rand-dynamic 0
. ^6 H9 Q/ _* o0 }9 d, A: \" x
end* ?; e, u; F4 R, D# U

4 {; a$ s* `8 B* |  Yto setup-turtles
) q' D2 R( H3 \) Eset shape "person"
# O1 B$ f/ O" {' r% \setxy random-xcor random-ycor2 [' ^0 @1 C" }8 E. I
set trade-record-one []5 p' S4 l+ K, z' R9 d

4 K, V. T) q) h* C6 |$ c+ y! N2 Sset trade-record-all n-values people [(list (? + 1) 0 0)]
7 B# g" N/ U5 b/ U
" O6 o2 z$ o% Q1 w* a0 z0 h% C' U
set trade-record-current []
7 H& a7 A* _, }9 b* j6 M: p+ @set credibility-receive []. V6 @: J5 i0 m; x
set local-reputation 0.5
6 \1 R2 {% S3 z' xset neighbor-total 01 j' ^( D6 m: S% E1 k, _: J" i
set trade-times-total 0
/ s6 s5 |: O' R# R) j, u3 Fset trade-money-total 0
7 U; f3 V# M0 @5 I. u; ?+ `; tset customer nobody1 O, @4 n! I5 \; [% |" ?6 ^
set credibility-all n-values people [creat-credibility]
* S9 {' t2 e& `. a4 r0 |set credibility n-values people [-1]/ `/ y* n5 R% Z$ r
get-color8 O1 R& ~3 d2 K( \  _

. t8 V" p$ B! Y3 Q9 t& U9 qend; K9 Y% b4 g, h0 l+ S

( P, g: {/ `  T( f6 Uto-report creat-credibility& z4 @8 V2 C& Q9 W
report n-values people [0.5]
4 D6 V0 B8 e2 J' @end/ j* w4 O% C8 X7 k

( A: r* q! j1 `to setup-plots5 y; O  W8 `; t
4 s& ?6 d7 j1 @  n: k- a
set xmax 30

, e) W" ?% ?7 s: [4 ]* P& T% f% s; J+ T& a
set ymax 1.0
/ x* H5 V" v! h' B, g; A
+ Y4 {) X4 u' p3 `" z5 [7 z* A
clear-all-plots

% ^0 Z) W0 F, T
- W5 e( Q) V( v3 G9 d  _setup-plot1
! \, ~" Y8 N$ J9 {. R  O* D8 ]
0 E% W4 b, v8 D* p
setup-plot2

- F0 J. k- u; s, X9 |
9 W7 q4 r" K1 rsetup-plot3

7 p# P9 N6 y: p. Z* y6 w* zend& C) C+ Z/ i; t/ ]$ X

/ r! [1 n) |0 D  t. ~# I: @* @;;run time procedures# s% k- B9 |2 A1 @6 k" J3 X

. B! N$ d- d7 H" fto go
7 p+ g3 {7 f. |, J" s- T
8 r9 z! {2 K8 V+ f/ kask turtles [do-business]
( N! ]/ K  M* C' e  i
end
  T/ h$ o6 i. p4 w+ K
9 E7 L" V) {1 p$ x7 O- Zto do-business
: Q4 g& [+ q5 j" E+ Y
% G7 s5 P5 @8 f7 R# b2 P* D5 @

. b# |. V1 e/ [7 K  U- ]rt random 360
' z( D2 s* x2 d
: g& }/ I* ^2 E, `! ~% E8 D5 S: R5 T: I
fd 1
  T/ @, D$ N' d

1 A) I* c) |8 C% f* @% b+ y/ y9 Pifelse(other turtles-here != nobody)[
( Q/ }- w3 a4 f6 t3 u

7 D% z! {- J2 M- W3 u/ }set customer one-of other turtles-here

1 N4 C% m- `% T' e+ B8 [  V) b+ K9 f9 @% {
;; set [customer] of customer myself
: k  e9 O! J4 U: [* S; |

$ N- L2 s; v9 t/ k& m4 Bset [trade-record-one] of self item (([who] of customer) - 1)
$ f9 f% g" X2 t$ Y[trade-record-all]of self
( {4 L8 `+ `9 k* E;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 x* H' F% v# \: {  v! j
, u! {: u4 \! d! c! j5 i: r9 r" Gset [trade-record-one] of customer item (([who] of self) - 1)
6 z8 m) y1 K& R5 j. u  f3 e# F[trade-record-all]of customer
' l0 A3 b! n4 x
3 c6 ~  O- L! |6 [
set [trade-record-one-len] of self length [trade-record-one] of self
. a! E0 E* D- _9 X0 u) F) J

' }4 P3 F# O3 |$ k% u. q% ?& Dset trade-record-current( list (timer) (random money-upper-limit))
$ a2 K. ]* |! }6 o

8 a$ P7 V+ M% i! Q5 X% n% ~6 Vask self [do-trust]
& Z2 ]: r+ Q# F3 p3 o9 d. H% q5 p;;
先求ij的信任度1 |  M% h) U/ T

, @# p6 `* A4 b) r' P. w( I" Oif ([trust-ok] of self)( R1 v0 m7 i/ E% @, l. L) N
;;
根据ij的信任度来决定是否与j进行交易[0 y  h( _! j/ t% S6 }" V) b
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. t) \! d' ?2 z9 M& d" U
5 [# G' M! L0 h# \1 Z- T, ]
[
6 D0 U: x$ Z9 ?& c8 G, L

+ g( q1 B% {/ r$ ?5 Wdo-trade
) O3 t, _/ o* d1 O( Z
  Y4 c) X  E+ O" Z) L
update-credibility-ijl

, A5 L6 M9 @0 P$ U9 {
4 U$ U% u8 R8 Y# ~update-credibility-list
6 e- D- U% ?7 c) D) H  l
2 X/ ?$ c8 U. a8 B0 P+ k6 R
% H4 d$ l$ i! x
update-global-reputation-list
" s; f5 ~2 d8 y+ @0 i, m

1 I' v& @1 E( ?" apoll-class
4 Q: M7 o: A' C& c5 n2 o, h) b) ?
6 I; R- |2 U) E' p1 Y2 I8 ]" N
get-color
2 |. M' o* W" X  |( l+ |+ |
' K, h. K9 [+ ?
]]
8 m# Z, u0 a6 N# z+ y+ j  l
* O) q/ M# u& ]. q* P  u) E;;
如果所得的信任度满足条件,则进行交易
9 u9 Z3 E, X( L# T# v: d
% s- [, L4 r- g7 C  c. [[

  D4 S5 ?0 g- _) I' D# l
4 ^8 L) q- f; ~# ]rt random 360

% R, C' s) o0 m% ?( @3 C" k" ~+ N  G
fd 1
; s/ [$ q, a6 {! m3 {! _& g" I
9 E5 T6 T6 U* U) H' B9 K1 B. \" Q
]
3 r) P# {3 L% b( Q/ g6 |* A' ~

$ i. V5 }3 E. Gend
4 f. m9 ]8 d; G1 [

, Z( M; h5 ~9 L2 w7 Sto do-trust
2 G2 c* k8 n  j0 p2 Nset trust-ok False  W: A8 _8 R( ^3 ^: b) x! p
: R) |/ X& x9 S. n" I$ F5 m

/ P# s" ]/ R  h- l  ~  [) o& H* T2 Jlet max-trade-times 0
9 a! z: [! j$ B' Z' D" L2 s6 yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 [! P: H7 _5 S+ A3 Vlet max-trade-money 0
2 S) q4 s1 y1 D! xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 ]+ Y& D* |2 i8 k
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 j/ ^, D8 O2 A$ d6 Q
! Y" a- ^" T; w& x! L

3 u/ K7 c# j& ^% X$ G' oget-global-proportion
  D  ^' F, F& J9 n. I. flet trust-value
" w$ |6 _! ^6 G& E6 ?8 M4 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)

1 O* a: [: E  j  C6 }! Z0 x$ C0 N" Kif(trust-value > trade-trust-value)
' N/ n$ o- V& `[set trust-ok true]
8 I* B4 ^% {# tend
7 b1 Z9 j! L: ?! g/ C- G3 g4 q$ x: {. |* N+ q5 b9 `
to get-global-proportion
3 s8 W) K) N' `' ~ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ i" l2 v& _4 F0 b( Z
[set global-proportion 0]
8 Z0 ~+ K$ ?8 n& T  L[let i 0
' a. |& ~6 ~  O* H5 r9 nlet sum-money 0
% A+ X7 A. }9 I7 }# Gwhile[ i < people]. V: o- B# {! X# M
[
9 M& F/ ?3 r: ^, Q& K- Eif( length (item i6 l- u" k) A( g4 C! S8 E
[trade-record-all] of customer) > 3 )
& y1 ]0 h0 k# y9 s8 y' i
[
8 `" X" a/ v4 L( m+ Wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, k" j/ [& d/ I$ ?4 S: d7 ~7 w# N( r]3 w. M0 [7 ]9 \# o$ d1 q
]
2 ]; Y9 e& y$ C$ F. C/ r  clet j 04 L1 B+ E9 S1 t# I+ P7 J1 G6 y
let note 0
) |+ \' o6 M$ E) ~, ~  k" Nwhile[ j < people]/ n4 D6 N, J: y% }. K
[& j7 g8 k/ F  I; ^6 G" D
if( length (item i
5 |7 X; m, F8 d* o# U/ z; e/ m, [[trade-record-all] of customer) > 3 )

# {" S2 O2 Z- |, x+ A9 z$ b[2 S9 W4 C; ?' p6 O: B7 B! U
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). f& l! W% k, {' p- t9 v: N
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 }+ D3 \2 q2 ]! K) D' x; X! P7 s
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# D% E( z) i( t; {]
9 I$ X( E1 ~0 [" a" |]
# m& s/ z3 p( F- F0 Y8 Rset global-proportion note
: M" w. l! Z) m1 }]
/ O& f% F: Y- q  D7 `! x$ dend' h: r9 x; Z! K  {- O  w# K
4 ?/ j5 o3 x  `) `" r
to do-trade
+ Q7 h, V! R  u; I3 b+ V6 P2 \9 |;;
这个过程实际上是给双方作出评价的过程
2 C" F. I. L4 Q  z/ k- [  O, k' uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 z  d9 j+ @% r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 `$ g+ p3 x- K5 ^$ h, c
set trade-record-current lput(timer) trade-record-current
+ l8 `+ t7 }7 o/ P;;
评价时间) |, r! a9 v/ y9 J( I
ask myself [1 C7 \& R2 O: |
update-local-reputation, ]9 G3 Q* D5 l5 a9 S
set trade-record-current lput([local-reputation] of myself) trade-record-current
, F4 U$ H4 {. ]  v+ u7 Z]1 r! w$ g; O  m: i( l- l2 f, M. r
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 _& d3 y* W5 k
;;
将此次交易的记录加入到trade-record-one0 d5 c; O! K) j$ b
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 I& N6 f. ?1 X: @* Z; P7 B
let note (item 2 trade-record-current ); t0 O2 b6 H% J3 X- h
set trade-record-current
% P$ }/ T/ x5 y1 D(replace-item 2 trade-record-current (item 3 trade-record-current))
% V0 p' b. ]' [5 _7 |
set trade-record-current3 f0 |! ]; z, z: I+ Z7 g9 z7 p
(replace-item 3 trade-record-current note)# \  \2 Q! V2 s; v
0 a7 S$ V' ~2 f  a% ^- X0 o

; Q, k  J$ O: z3 z1 e! Q/ g1 qask customer [+ _1 W7 {; E8 S; ?( d$ O
update-local-reputation7 U: {  z8 E# {3 b5 x% T5 F' i: ~
set trade-record-current
; X. g& R: j3 i(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; h  ]% R- X- k( l7 O% G]% I8 Y' M1 F; e1 e& |

2 ^" y7 {) v/ W( {. F
0 r! f7 F; e" n2 Q# _! M: H
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 z* @. q' y+ ~0 h

( I! G, n, U0 r, T! a6 C" Y/ R# Rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 W" p" L3 l' Z. F9 {
;;
将此次交易的记录加入到customertrade-record-all
# z, J+ e1 g4 {( s- Bend
5 h9 v7 g6 ^( Z3 F9 Y' o, F' R5 [$ `: o. X/ ?( C
to update-local-reputation) E- N" w4 z* T, t3 b
set [trade-record-one-len] of myself length [trade-record-one] of myself4 y! I) y# R! t0 r4 t" D! E: y
8 p* U9 y. b; X) p( R

2 x0 D! R7 i/ z: R) t" r! J% o;;if [trade-record-one-len] of myself > 3
. h: }% _9 B  `7 ]- A, a
update-neighbor-total
3 x5 v, O5 X+ D  c2 \$ S" M5 I2 d# R;;
更新邻居节点的数目,在此进行
- X. I4 S& V+ T% e, D" Vlet i 3
5 D9 p, w# a% e2 Clet sum-time 07 d& I" d7 |4 d9 `% y
while[i < [trade-record-one-len] of myself]
3 b/ s  P, b% Z0 Q7 ^6 N* Y  F[
4 s$ }. ?9 Q8 D/ Bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& B. }5 C- d4 d  s& G4 Lset i* u( J1 I9 }* {
( i + 1)
  G3 p& ~5 I5 z* y
]
( I* j. e  g- W2 o! k2 Zlet j 3
8 C7 P" T* s/ c" x, e- }let sum-money 0
0 d$ f  J: l0 d/ |while[j < [trade-record-one-len] of myself]
/ D3 P" }* R" W$ N' B[1 K+ O: E# z: 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)
' v6 s$ [5 l$ Q- ]: qset j" l. ^8 m3 w2 o: m: P+ `
( j + 1)

/ ?7 ~% Y( W0 o8 c]
. Y3 ^  w6 B0 W& Zlet k 3
( T6 e/ K! t$ Z7 F* H( Blet power 06 E" R5 z4 O* T
let local 0
' z: t, j! y  y% V4 Ywhile [k <[trade-record-one-len] of myself]
* N7 G& M+ s  O( A% u- o4 [[7 e% D6 z9 l2 r
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)
1 a( w7 O% Y/ Fset k (k + 1)* I* T0 [& p; v. r  k7 Z4 S* }
]
& L& H2 r- K" D8 K# hset [local-reputation] of myself (local)0 q4 P! b" q& L
end
; I/ E! [* V: W5 `4 s1 ?0 V
, ?  }, u/ i( D8 Wto update-neighbor-total
7 y+ p/ h4 K6 [1 I. T( c' n, g+ I0 G+ U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 l; ]# w) m( s5 b) `5 M
0 |1 H4 W( v% j
. F. P* {  i+ s; o
end6 Z% n+ l. a: O; M: x
0 E( B0 f4 B& Y2 }# K5 b
to update-credibility-ijl
3 `. L; i, V# h: b4 b- v$ J# v5 v6 O# a$ L1 y
;;
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。
2 z2 O' @) L1 }# b9 l- G6 Flet l 0
5 Y- f; L+ m; g1 Y. j) l; n2 uwhile[ l < people ]2 K1 P: y5 p. t4 t9 C7 C8 w4 O# Y
;;
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 c) p6 w# P: h7 w[
# k8 _1 U1 e' _* V/ ]8 tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)- H' M. d) b) R! |2 I
if (trade-record-one-j-l-len > 3)2 M9 z9 d; c, v, Q9 _
[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
3 b# \  p' P, q$ L# x$ |9 Alet i 3
' D. @. m+ r# |4 m: b4 F3 g) alet sum-time 02 {7 X3 T( m/ Z+ Q, U
while[i < trade-record-one-len]- s* u/ }5 m) c( h. v
[% b! F  E/ }5 M& P+ f
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 N. L2 l" q9 H) r# y, @
set i- P' j2 N0 t  k  M: S
( i + 1)

% @8 [! ?" B+ p0 |* e]  p8 I* ]' ^* u% [6 z
let credibility-i-j-l 0
4 e4 p8 H" g7 L;;i
评价(jjl的评价)
7 l) w" H! N$ D) g5 V1 ]let j 3
& @  J6 r" T$ L! \$ ylet k 44 b7 A+ k0 V5 r8 N* W  T/ k
while[j < trade-record-one-len]
/ ~' u9 u. I6 x, Z* o; l$ [- j) g[& q; K, l: W  R: N& ^9 }- G5 E
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* v' M# n$ S5 c/ ~: G& a6 x" a
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)
0 A  m9 Z# t% n- {6 t6 Y3 ]set j
; ]. [/ R# H) y( j + 1)

4 k! J) I& F+ F( t3 M. q]
; \& B1 @3 X4 G9 k! Sset [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" |* B9 c8 i& G

* L1 O5 @- f9 B' E( I) {+ {

: }4 r" d( N8 K& w1 Dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ w' E( Z' k( a6 O;;
及时更新il的评价质量的评价
5 D' N9 @0 S& f0 o2 y) K5 I9 jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 R: b. T3 m& n1 @- X" v! a
set l (l + 1)
# G+ E6 x  Z- q/ O, W( U" U5 I]
. @% l7 s7 r" `' C7 A6 v+ dend
" w2 h8 W; H$ Z( A' ^
, D, N2 }( V) q4 J% X- nto update-credibility-list- q3 R' n4 n9 j+ I3 E( v
let i 08 `3 G- P& I, ]
while[i < people]
7 O0 C: a$ _  ~- l[
4 S% X( k! r  M  ]/ d( ]let j 03 f; E) o5 D8 C% n* C9 f
let note 0
  f/ q/ V+ I" p/ h; ]! A4 R/ f* M, clet k 0
$ O: L1 V0 a. L;;
计作出过评价的邻居节点的数目6 t, E7 N2 k7 y+ s, j6 }' J  E" l+ d. q
while[j < people]
$ Z' q6 n" j; _% b' ~1 z6 N9 [[4 g9 p  u/ V7 a9 F7 q
if (item j( [credibility] of turtle (i + 1)) != -1)7 g) f0 ~/ a' U6 i- I4 N
;;
判断是否给本turtle的评价质量做出过评价的节点
  Y% e! ~9 |% E) k7 x[set note (note + item j ([credibility]of turtle (i + 1)))! {6 P) J; j  v  W/ G. P
;;*(exp (-(people - 2)))/(people - 2))]
+ R6 [9 G' c4 K
set k (k + 1)
1 A4 ]: l' P9 F]/ H; U6 b: b" N5 o2 G- f
set j (j + 1): T$ \- p/ U. n
]
- G7 c0 I: G( sset note (note *(exp (- (1 / k)))/ k)( z/ j  f1 m: u* r; i
set credibility-list (replace-item i credibility-list note)  `* p2 N9 f+ O9 ~* F; M2 [
set i (i + 1)
$ F( x/ @) F9 w7 w/ k]/ [% m5 X! @( W: y; e
end1 @7 I7 ]/ a3 O. I* `4 ]8 n# u2 N
  L' l2 T9 L1 a5 H8 E/ R6 M/ Z
to update-global-reputation-list
) K3 R! U. G' G& S: |. U. I) M" zlet j 08 z( T; x5 h# ?9 ^6 A; n4 H  _
while[j < people]
8 _) b  X$ f0 k0 X' ~8 U[) s7 r: T3 b: B
let new 03 j* ]0 R9 m8 |0 @9 O. w  o, e
;;
暂存新的一个全局声誉
' `: d! s; L* G. Z7 Y# m* klet i 0
2 g5 B. x9 h3 Y5 m# r/ dlet sum-money 04 a0 c7 g, C4 u! U% e
let credibility-money 0
# _0 m: A' }( uwhile [i < people]
1 ^. |. l9 p$ }* r/ V4 k, X[
4 V0 L; |7 h, h. a5 ~set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( N# Y3 _% @8 u6 O% o
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" b! X9 K5 p/ y+ y; Iset i (i + 1)( D% [! \+ J0 q5 N1 e5 j: D  C
]( B0 Z6 u( s( a3 F
let k 0: m# N9 R9 ]+ W% L+ _/ f# @! L
let new1 0- S8 U/ Q, x" \7 g& ^7 K
while [k < people]6 N3 c' A+ ]! b: v" N
[+ W0 U* [" g4 [
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)
7 Q. n) Z9 T, ?! `set k (k + 1)
& ^8 m- K# b1 k, R& M]- f3 C, W6 h/ y# \8 a* t! s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 K1 B1 `( t7 X! _
set global-reputation-list (replace-item j global-reputation-list new)
. |) M( B5 {5 o6 e7 X) \! _set j (j + 1)
+ R* Y& g6 _7 `]
2 V9 U; W/ T# F; O: `end) G9 P. d. Y! u5 T9 S- \7 j1 ?
4 h( o) K7 x9 l9 b# n
! x! i, d/ E! q$ D- t

# P/ x: I7 I0 l0 n4 a+ r& m3 pto get-color/ g. Y* ]9 Q5 b1 o& K) l6 G7 \

) U1 {- t" g" v; S4 y- x. y" h# zset color blue

4 s5 |0 q; F9 v! h# u; H) Z* }: vend
+ r6 B/ Y) n$ E# O% J. `2 {! a, K; ^
to poll-class7 ]3 z% U4 j/ Q, K0 ^2 P; `
end, l0 ]8 k* I% f8 l! i$ ~

6 v, {' r* G+ L- V  ]to setup-plot1
1 ?$ X0 R1 c1 u% s0 ^
4 [. H9 O& t& h) r+ ~set-current-plot "Trends-of-Local-reputation"

, F; Z# B) d6 D( Q' U2 G$ P
1 n7 o" r& d4 Q5 tset-plot-x-range 0 xmax

. I' f8 X% c' B3 Z+ J0 R. F
  V% Q' c' {0 r7 qset-plot-y-range 0.0 ymax

+ z2 d% h1 N$ J  K2 ?& P) {7 Wend4 Q4 S6 F. h+ |
" S( e2 y2 j: e1 t$ G9 I, k3 {
to setup-plot2
+ {3 g4 }* f2 B
; k: _; ^# V8 }. V0 Cset-current-plot "Trends-of-global-reputation"

6 h' K* S( V* H8 v8 {) M+ @
0 I, a& q, Y: u! Nset-plot-x-range 0 xmax
+ A0 G. u5 g6 `2 p$ P3 K  u
* S" z: e3 U+ [$ b* Q
set-plot-y-range 0.0 ymax

  d$ ~9 _+ L, [3 ^/ L0 |end
9 K* z4 F) t2 b; j. y, C
& h" D0 L6 ?4 _' x* [7 T0 tto setup-plot3
$ X2 f  c3 T$ s. U5 h6 Z4 c. P, h" P1 B" `; z! p  V5 U" b& |
set-current-plot "Trends-of-credibility"

5 N- V& W2 F8 R5 L# H- X: H) F# A! S; c, C8 ^6 r0 |
set-plot-x-range 0 xmax
& ?- x1 k' g8 |4 z4 B) f

' \. }. H/ z) G& A' aset-plot-y-range 0.0 ymax
0 X" |. Q  [, [# g/ o  N
end
" x. g! N  M# n) {
5 \, t! Q( Z, D- x" a1 ^% c1 Rto do-plots
7 M* m" K1 ]8 c' t2 oset-current-plot "Trends-of-Local-reputation"2 e: ?6 E3 l! }! a4 ?1 m% C
set-current-plot-pen "Honest service"
9 C" i* m% G4 `% U2 hend- T' E* d! Q' D
1 O% F  x$ \! i" E; W
[ 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.7 L5 j" ^9 d- q6 b* s9 N

# N7 X0 f6 Y5 n; ]+ 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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