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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:
0 v! c2 N- f- Q5 y7 E0 Lto do-business
5 k! T  b9 k/ m0 _/ ^5 {3 z rt random 360, F) l0 M1 ]) r0 X% b
fd 1$ t( R- e" I4 w4 ]2 n
ifelse(other turtles-here != nobody)[
+ u+ w9 A$ Y1 q4 |1 `+ G- s' \( O   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.3 ]$ e! }& ?' q. m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , _8 Q6 ?5 O6 s) z! o, V+ ]0 d3 ?! v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- [/ x4 \4 ~5 @! i5 v0 X( |
   set [trade-record-one-len] of self length [trade-record-one] of self
9 f. G& s& ?! A) ?3 T* x   set trade-record-current( list (timer) (random money-upper-limit))- B. ~$ t0 q" ^" K

# m) K% w8 z4 w' K7 C7 r& ?; R2 J7 p/ h问题的提示如下:
' ]0 o- V9 [! F6 h! b) K  D( O6 z; d8 {: }4 A' P* z
error while turtle 50 running OF in procedure DO-BUSINESS0 g1 F. |$ p' S5 d
  called by procedure GO
1 s) |7 }( m% M- z" y$ B4 iOF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 u; q4 o7 `- R
(halted running of go)
, L; r0 g: N$ Q: C3 i! \, b% K
5 f6 ?; X- O  ^# ]# t/ E" }3 ^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~~& p5 s4 Y) K- D. S& L8 k
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% N$ i; @0 U5 j% [( s
globals[
! H5 d  H; V# f9 I6 T% x7 Sxmax
+ N' p6 o$ c0 Q0 }' R* P  o4 {! nymax0 e% |/ Y5 S# h, @0 B9 |2 B2 C  S
global-reputation-list% E& g# j) i" u. G/ Z, e

; @8 @2 E5 ~6 \3 d* p# k7 L; s, N;;
每一个turtle的全局声誉都存在此LIST
" B3 x" j% {$ J& ]/ wcredibility-list* R- d4 a: X6 E% @6 C4 h+ ]  I
;;
每一个turtle的评价可信度
+ Q" F1 h) O" T( o0 V: y1 B$ `1 u2 Thonest-service
/ Q. L  R+ X; r) [/ k: p; G9 E$ lunhonest-service
/ ?1 t+ F/ s+ L8 N; L- Zoscillation) {( N. L  D$ F0 K3 H; U# E
rand-dynamic
9 n1 k( H8 d0 d# r" Y]2 s8 m! N6 `1 [1 E

/ }$ y1 R* E1 U# O; I! F/ wturtles-own[3 C$ M% c: S  f, ?" ]
trade-record-all
! o3 Q' I7 q. S# ];;a list of lists,
trade-record-one组成3 W+ l3 J  {& r, a+ N
trade-record-one* ]2 R$ v. V" C3 _- a( X- e1 H6 Z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; m7 |: ^  z# z8 X5 M9 q! |8 Z

- J. I3 J/ i( P2 \;;[
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]]
7 w' S0 W7 G! |' k3 mtrade-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]
' l/ G  \; b6 x# d. Tcredibility-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) _( _' I# Y9 h7 l1 i# i
neighbor-total' a: P5 R2 l6 i* R6 r* C
;;
记录该turtle的邻居节点的数目2 ~; N! W' {# U! y
trade-time+ w9 q+ ^( l  V
;;
当前发生交易的turtle的交易时间; `$ L) B- o5 G  S# @$ ?0 `- p
appraise-give
# @5 x* O$ O- v% G4 @% }7 S" n;;
当前发生交易时给出的评价' @  d* l$ p- q
appraise-receive1 r' a2 s) X( e2 i' y
;;
当前发生交易时收到的评价/ [% y1 @" d* \  c
appraise-time; d3 ~4 u" _2 M0 t' L
;;
当前发生交易时的评价时间
$ `' z5 [) F7 [* ~* m' E; v5 n+ R, Clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
, U0 ~1 n* J& ?  Ztrade-times-total" [3 J% S4 t  n! ^6 |2 Q$ a" r
;;
与当前turtle的交易总次数( K) m* T! ^6 T. E- _8 K$ d
trade-money-total
! X, O; Z9 O" w. ~; l( p% a: H;;
与当前turtle的交易总金额( h$ Y4 {( N7 a3 d/ l# z" x' a
local-reputation. W2 ?! b& O* m$ \. R
global-reputation
. s. o- J6 o3 E) A3 ucredibility
9 c& p  a9 D& ~7 G;;
评价可信度,每次交易后都需要更新- c- }# ]/ e* k% U5 x
credibility-all, ~0 v" [; s- {! `2 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" K/ W/ E% Q2 `5 U& A

! m1 B, B5 Q- T; E" P- r5 q;;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
8 t, {8 y1 z6 }/ e1 D2 A0 y, kcredibility-one
5 m: v. o2 T% A8 y8 F;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
0 j  n4 \' R/ B+ R. x  f# jglobal-proportion# \+ M( O' p, \. [" Z' u
customer
& v7 B6 O5 O- tcustomer-no% j# H# i! w$ {& o
trust-ok
. p) a& K6 j# V# Y" {! p$ `trade-record-one-len;;trade-record-one的长度
, o2 m; D. N7 F" _, W]9 M' ?) d; z+ z5 A; N! N, @
/ X# x7 G  N. T
;;setup procedure
5 t# h6 ]# F' k* e+ F3 a- b6 c# h" M
3 H/ w  k  P/ j, |8 z3 i9 ^to setup
+ z2 m2 o0 s" T, h8 y
; j% Z6 n( w0 _0 J1 a5 [# Sca

% \) V+ A* X- {3 ]6 q9 z  ^& M4 H6 N- D6 W0 }8 @
initialize-settings

% Q+ D* ]8 I/ a. Z( ]
, t  s+ G9 Z/ h7 S& \- xcrt people [setup-turtles]
0 t/ a" X0 r2 L( z* b& s
. h% B2 y( y! i$ F
reset-timer
; `/ t. Z/ c6 n6 K

1 Y4 Z5 L: ^( F; {poll-class

* u- W8 u# V% ~  x# R' p
' F( l4 ^+ k, g% S! ~setup-plots

, {- J# ]" P: ^; K: u4 X+ Z  ^3 i8 V
do-plots
( N  b4 N7 \' f9 y6 I
end- ^8 R; m- W. H+ ^( I

5 v- K! f: f, T5 v9 Y+ Zto initialize-settings
4 g6 t! V. v8 k, a8 r9 z! I
  w6 h' h/ T! U$ f& Z  pset global-reputation-list []
0 i2 _/ Z1 T; Y( y* m

# N" T3 a7 D$ J% t# k& l# F$ eset credibility-list n-values people [0.5]

+ j; A+ s( q" o0 M% {0 U# ]' ~, K- ~
set honest-service 0

1 `. b* c8 D& c# [% t  e
7 i, l. t7 ?, l; e- {& Rset unhonest-service 0
1 G' Q$ u% `+ M8 ~

, \2 s- ~0 W: fset oscillation 0

9 l9 ?' G" s) G& u6 ]3 f
/ k& Z1 O. W0 l3 B, {set rand-dynamic 0
; `5 n; r! f: u7 G0 [: s/ L
end
, s% N0 ?0 \  m% y& I0 `- {+ r, k, V, y$ n3 }
to setup-turtles - l+ o+ k' M% h2 @
set shape "person", O0 e" y& `/ r" \( ]8 b# Z1 q8 I) Z
setxy random-xcor random-ycor2 ]. U8 g+ g0 f' x6 ^$ z
set trade-record-one []" ]) n! p& e. [; V: i; ~* M9 X

5 o6 L. p* \0 V; K5 Cset trade-record-all n-values people [(list (? + 1) 0 0)]
$ u) q6 |! V# v" p* B" N
5 Q0 S2 P) n6 C
set trade-record-current []
# o9 n' n" t4 e8 Z$ k0 n1 `set credibility-receive []
$ V! ?; ?* T: Qset local-reputation 0.5
) f( g% i- y& _: c4 E$ Hset neighbor-total 03 o- O2 u+ w: Z  D; x
set trade-times-total 0
, Y' w7 b4 s: C' vset trade-money-total 0
! L4 S4 h7 S$ ]set customer nobody0 b. A6 q) ^/ e3 B  X
set credibility-all n-values people [creat-credibility]
% \, G  {9 c+ _/ Iset credibility n-values people [-1]
$ G. v5 t# z" ?7 _/ Fget-color
7 a5 v  S4 n9 h7 r. N: A5 T% s

; n+ i3 O: f# [% s: L  mend
) {( @4 B8 q2 K  e" H0 F0 V1 K8 f& [1 ^: H; ?9 a
to-report creat-credibility
& t) o- U, ~# l2 u$ areport n-values people [0.5]
2 @. X: R1 F1 i1 d0 Vend- Y! {6 U7 {, X; V' A- n8 e2 d
2 n0 a, n  Z- r& y# z
to setup-plots2 k- ^* o  l8 \: }; ]

) q% `! Q6 ^3 z+ m# d9 e, Tset xmax 30
' v- H6 q5 B9 v1 x1 D2 v

# l# Q$ L; m& t  |( Wset ymax 1.0

( Z) G" |" K; ^& N( s  w7 @0 S+ _. U7 t8 j) p
clear-all-plots

3 _6 I! O+ C5 ]0 k1 j% E9 {. b+ u6 C! H2 m8 i) X* ^, {& F
setup-plot1
: \- |( R; i0 D9 i; e- Y2 ]
. W* `+ J) h! T( r
setup-plot2

; ^7 s* u3 G1 @7 I
  S% `8 E" b4 j& O9 usetup-plot3

. F- Z- \' H0 m0 nend
$ h* J5 k# {% Z+ ]0 h- z& |
4 z7 O" K+ y+ D6 k( N;;run time procedures
# b  V( U! z" k9 }! x* n& n  K7 Y! F# B: u$ d% `( z3 n" \! ~7 c
to go
+ q, F4 `) ~1 \8 z6 y
+ N1 V* x: G  p1 d! F: ?& K- yask turtles [do-business]

2 ?- B- \8 @5 L1 j/ S/ F% p: n4 e# Fend
- t: D" N! X) n& ?* S# Y" L$ s$ d# {) e
to do-business
& @! D5 W9 Q" [2 n& I3 k& ~3 h
% Y& J; _6 \) N' m: l' s3 z

6 I. @6 C" d% p( N% u- ^7 drt random 360
- X- ?+ T* @4 }
) Y8 y* u$ }- I; D( {
fd 1

, I+ W! w% |( p) p# W. F+ f3 v" z$ b: Q* {4 z
ifelse(other turtles-here != nobody)[

0 ?! t3 g1 z2 D* S8 I3 }
& }0 W6 {6 @3 w! i! m) \set customer one-of other turtles-here

5 ]4 S0 X$ A* t: p# ]
, S$ r9 \% O* W- W5 r6 ~;; set [customer] of customer myself
: @2 f3 Q+ ?( ^3 h+ r. a# g

) Z1 x: k9 Z/ R# \5 ]2 p4 Wset [trade-record-one] of self item (([who] of customer) - 1)
9 y1 Q. V2 T* ]) h[trade-record-all]of self
3 R8 ?8 |8 f, x3 _& ~4 g0 U# R8 G* j;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 o# O  [) A- M8 u5 A$ K+ c
7 E0 w+ Z* p$ s  mset [trade-record-one] of customer item (([who] of self) - 1)
0 L) T, A( q4 |) `) m" q  l[trade-record-all]of customer
2 ~, n0 Y1 ^5 L6 {( i+ ?% b

: k2 Y0 p7 G* f, D$ x* O( ]set [trade-record-one-len] of self length [trade-record-one] of self

/ d' f3 Q9 B' c2 e( g2 m6 M% Q( j' f* {. L, a3 I$ M& m
set trade-record-current( list (timer) (random money-upper-limit))

! t: ]) u8 `  c8 g8 y6 C7 S% x8 s/ \3 A% ]2 z, X
ask self [do-trust]9 z- _$ B1 C1 I
;;
先求ij的信任度
6 N) f" F7 q" o) v; P+ d3 z& Q1 G  [) s  E
if ([trust-ok] of self)
& y# l9 A) G* t1 @' R; a;;
根据ij的信任度来决定是否与j进行交易[1 v# E0 V& {, m6 _8 j! m
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. |+ Q6 |9 F) |0 k1 C9 k+ g3 B5 n6 j5 _1 E% |6 D3 s8 Z
[

( B$ l# h' ~4 J2 Z* |9 v/ _+ Y; P2 }9 y) Z5 m  |; x# S
do-trade

% }' B2 I: r& L" X2 E& N" l9 z/ m+ |, j" k+ ~3 N! R$ U# p6 ~9 G
update-credibility-ijl

9 v# q4 n3 [6 k9 o* {$ T# @
% y! B% o. \) g; p  E' nupdate-credibility-list( N  ~8 \' p% e. r: j
; X# A# \% {5 M

: V1 `% f, J; u$ j% k  iupdate-global-reputation-list
& x2 l  k- `0 o

. u5 M# b6 L, S) dpoll-class

* b4 v& R3 M2 e
$ a5 h& `8 r+ F0 ~7 P2 j6 _; xget-color

* m# b2 ^* H! Z( J) |) i" _/ A! Y3 u+ s0 k4 I' g% L) x
]]
* H$ F- d1 l, ^3 u, d& x# W+ P* [1 w3 R- A, y/ X& Y+ J
;;
如果所得的信任度满足条件,则进行交易( h7 g# S3 y- x" N) W
* _& t0 {4 m3 H% E4 U+ K
[

+ x$ l" t6 u) \! E# B( s  K4 a, a, E
rt random 360

1 e6 f/ X9 c* C1 ^3 B% y; W
1 J3 W# U0 ^2 F1 I# Z5 }+ c( nfd 1
/ [* h+ t1 S% g; t( z& T

' L* a8 I8 U! g/ E: Y' v]
7 W4 H3 Y% s" z. k$ Q) c1 T* s

3 l( \, c7 r" _end

2 t0 r3 ~+ a6 g9 Q; r: z4 W9 E$ }& W8 h+ e
to do-trust
0 u3 O) [2 d% o( Fset trust-ok False1 n  l& E# H( C7 }: o1 G
& V9 C+ D' s9 ^5 \0 C2 z2 M7 n$ I

5 n6 b5 F' z# ?6 |let max-trade-times 09 g3 s, @4 U% z7 I3 m* [0 J
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 ?0 I4 J2 V# G- I$ r$ q7 E; b' i, h
let max-trade-money 0
$ Y0 r/ K' w) b. ?, d7 Q* ^, lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 l1 h9 B/ w& l' D7 C& clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( z/ y, \: b2 I

, H' y4 x0 H- t* c: [( F; b$ K
" z4 T6 t1 g' B7 b0 ^' V
get-global-proportion8 s8 i' x+ V$ j- X+ d
let trust-value
6 Z: E8 T% Q: a7 K  N: Tlocal-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 \6 i) j# C  [) nif(trust-value > trade-trust-value)5 ?6 `& y- R) o+ X9 N$ O
[set trust-ok true]
: {( p1 u/ k+ y1 N8 u; lend, x6 F/ c# }! l0 S6 r6 r

" \, m9 x! W  mto get-global-proportion
) o6 J3 d. U- C7 j6 x* difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" B& ~- p+ [' c! o' C0 j" k" h/ ^
[set global-proportion 0]
, ?: T* V8 C( f4 f1 P# f[let i 0+ R3 ?( v) y  A
let sum-money 0
7 N) u0 V; `! ~# S9 `& Dwhile[ i < people]4 }8 S" r3 L& ]2 d
[
6 l) L9 a, p) K. L. Sif( length (item i5 s2 O- G% O1 \) S5 J6 i1 b3 z. `
[trade-record-all] of customer) > 3 )
1 ^& I/ |% R2 m) ]
[6 |5 x, b% Y# D0 |7 m5 \
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% ^$ Y' A: S; @2 ~! C  o" z; `]  o3 V1 R) x) Z5 p- g# n: p
]
8 X; {" l: q* {8 Y; ^1 Flet j 0  T# [+ f- W3 j* e" A( Q" H+ \4 ]+ R
let note 0
4 I, C3 N' w5 {2 R6 vwhile[ j < people]. a" q' h0 N- `( Z0 @/ a
[
- p& a5 g& G% t' oif( length (item i
# J0 Y7 f, T/ r) [, l% }[trade-record-all] of customer) > 3 )

7 i% A9 [4 ^' A! {; R[
) m3 J: T6 I7 l- y4 B" k- j  mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 p# f3 w; ]9 n/ i9 w' {: U' g
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. R* D- w& A- t' H+ H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 A+ s# ~9 N$ d9 q2 t$ p9 o3 _2 b]  I9 r; d" ]0 a8 K6 y
]) A$ H7 }& G1 G$ r0 \
set global-proportion note
( _+ @4 q7 [1 a4 Q]
$ a* j8 `! {) q1 J8 Z" a% X+ Rend; R# Y. _, E6 d

* `+ w) o2 _0 F3 Eto do-trade
+ X3 a) I* C: o: f- x3 ^/ T;;
这个过程实际上是给双方作出评价的过程+ Z5 K; B9 j- o/ {6 t- `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
1 w1 ]- l) G% q  ?( ^3 A9 D6 G/ oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 W4 G1 N4 T4 u% e& C4 S7 s: k
set trade-record-current lput(timer) trade-record-current1 F$ s$ l+ T2 L4 k1 K3 C
;;
评价时间
; g( f5 M4 e* Task myself [1 t3 D# F- j. G2 X
update-local-reputation
$ q, X& p+ ]4 r$ p8 e) x4 jset trade-record-current lput([local-reputation] of myself) trade-record-current* l9 K+ ]7 G* v. H: s  A  n5 d
]# I! |! ?+ m  u/ z# [: L! T
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! D3 F0 Z( w1 e' ^5 W0 h, L8 U;;
将此次交易的记录加入到trade-record-one
2 P+ x$ D- w. _$ @7 hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! s8 |- G  F2 ?
let note (item 2 trade-record-current ): j- j8 I, @0 |; Q- [- x
set trade-record-current; y0 {3 `% q: }8 N9 U/ x
(replace-item 2 trade-record-current (item 3 trade-record-current))

* `1 b  }6 a/ m6 I! b4 ^/ Jset trade-record-current
1 D- E4 T, k# N: N  ^. w! y! H; f(replace-item 3 trade-record-current note)
* s: ~6 C; M9 p  e" Y/ y* u5 G
/ o% X. S  P& w* h
" H( x- p% R; l$ ?
ask customer [
3 a. N: I& y8 _7 ]- @) _0 k% Q, }update-local-reputation! B, `$ ]. D1 k2 E6 d
set trade-record-current
5 M; S0 b; C$ i& W7 ~(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 ^1 ?& }. H0 D% a# {]' p' q% K. L6 |
, l/ i- r% O% [! P& C6 O, f

4 c8 S& |. q+ x2 b7 Q& E( Nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 c4 t7 V, `, n& \

* E) p: t4 e$ G# Uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( Z5 p, _& m# N3 \5 }0 `( g
;;
将此次交易的记录加入到customertrade-record-all( D* g5 L* a* _3 z5 V8 _; G
end
( D+ V; k7 z# }" O$ ]5 \, f( a' a% c4 x) }% G) j
to update-local-reputation
3 Q1 K5 _! h, V, {set [trade-record-one-len] of myself length [trade-record-one] of myself
; _8 A; S" V# b8 Y4 u# h( H
$ t$ Z# e" O# S( f  G
+ b7 q: S5 {2 ~;;if [trade-record-one-len] of myself > 3

7 a8 F( }( ?4 f8 j: S" l$ H7 tupdate-neighbor-total6 e* b. y# m! o8 {8 ]2 N( n
;;
更新邻居节点的数目,在此进行7 R5 T3 B& X1 I
let i 3
. P! [0 X9 o9 S. q% |. qlet sum-time 0- V/ y5 z1 J( J4 o0 y: \
while[i < [trade-record-one-len] of myself]8 u( f% G- h: @4 ^) H
[$ w# |% A1 N7 g' Z" a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! r7 [/ N4 C6 y1 D1 ^' _4 g
set i
! s4 ~) {5 J* F% G! Q1 y( i + 1)
8 O0 j+ N2 ^: J; c
]
" o9 C2 L' d) j; ilet j 3
- n( B$ v: ?+ v3 ]# k: Flet sum-money 0
" Y1 g* z: c9 [+ rwhile[j < [trade-record-one-len] of myself]. Z0 ^& G5 n# Q4 L
[
+ `* z' ?0 Y) V+ Iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
" H% ?$ a0 F5 Q% w2 H) Z5 j" xset j" E& k+ Y3 A# L, v0 P0 M( ^
( j + 1)
( u4 c( W+ G- Q
]6 v- _' `9 C; a1 g
let k 3
" n* k8 y) h  ^+ o; T. ~: w7 hlet power 01 v  ?8 \" t! J9 ]* e
let local 0
$ H! h6 D+ @# s0 e8 R+ jwhile [k <[trade-record-one-len] of myself]
0 {9 d7 j4 x7 S. S[1 N5 D1 r" ~1 Q$ ~( _& T- o; j! v
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) ( }8 m  B, q+ }" a* O- o; p9 C
set k (k + 1)3 A# G$ B3 J$ H' U* D
]; y4 `# k: N/ a! n' W* F
set [local-reputation] of myself (local)0 r" \- t# T% ^$ d+ j/ y
end
! q# ^" N* t, g" _. d" T+ I2 F0 V7 D
to update-neighbor-total% g* |' C. R' i2 q0 j/ _. l1 j
  {& H# U( S; e9 B* Q9 N
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& d9 P" c' _& |/ Z
) n8 p% ?1 O. ^+ H! Q

$ E. S2 s1 _" q) ?4 T8 Lend
& n2 q0 {# Q. g  b; m1 S8 d# o$ K8 Z4 s& h! v7 H. j6 [
to update-credibility-ijl ) U5 g& D% e3 t0 N% f: G" K
' s5 [# Q/ Q+ ?' C  P
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。. [1 q/ c" A/ ]! p, z5 a+ H2 |
let l 0$ @: M0 n6 t. \& S# |. P( S
while[ l < people ]
$ l1 h/ i: u% 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
6 H1 T* I4 |' U  ~) Q2 l[8 h% S1 \( U4 r7 V
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 l& g7 m8 Z" }" _# u$ n$ `1 R# s
if (trade-record-one-j-l-len > 3)1 Y: I' i; z, s7 m8 S" `
[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
9 @% O2 l. {* \$ klet i 3
) K5 a5 R3 s% x  V* Nlet sum-time 0: P: |) K; y3 r: @4 `: @
while[i < trade-record-one-len]
" R: h, R# w  d8 k5 U8 X[
' S+ H9 F3 u. ~( ]2 a& ~set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 X5 }  ]  W% P+ s  S6 G* W
set i: X+ z$ T; y" F2 y$ h; E4 s
( i + 1)
  W* ?+ U9 K6 Z& X5 _/ N
]
' @; W+ `( c9 J. Olet credibility-i-j-l 09 i; d, \' f! U
;;i
评价(jjl的评价)0 `$ A% A% f4 _: t, R& a
let j 38 Z: P4 P+ Q  c% V
let k 4( w* o; |( m4 J% k# H0 V
while[j < trade-record-one-len]: |% C6 o5 G% H6 J8 A% `2 s. O
[
+ C+ @6 @9 r0 X3 \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
5 R( `: N: t: Q! ~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)3 {9 j( d# a. Q/ Q
set j
9 a* V  D9 N$ X! J  E( j + 1)
% W! F9 o1 m( g; N, y( I0 [
]; i9 B  N0 n, p
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 ))4 \% u2 k) T6 c! [2 L% ?

6 u  s3 |+ E# x7 G: w/ V* v
* B- v) G* i  B4 t( _6 A6 y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ x6 v* e1 T: h8 {! Y
;;
及时更新il的评价质量的评价3 X3 d( f. X4 n' [. u0 y- K) c
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" T# h5 p' z, X, D$ n: u
set l (l + 1)
: x( R5 h! i% ~& I8 ?+ S+ T' s/ []
( @. T$ \! F! w, I" N1 w% Iend
% J# c  r+ ^6 A0 ?" s( h  O5 @$ z3 D: ~* |
to update-credibility-list
9 [" R# q( o* g  e3 D* X2 Ilet i 00 H& `% u4 K( b  f
while[i < people]
* b( O9 b: L7 K1 v3 I. \5 X( S  H[+ L( H- }4 X- h7 _+ B
let j 0
. u  u* |+ t9 w( R3 t! clet note 0
1 r* }5 q6 B! [6 `. X. flet k 0" z# Q1 D$ p( x1 n2 `) x* G# P' R
;;
计作出过评价的邻居节点的数目$ K, h# }* j6 v! m) c( V) I
while[j < people]
2 x' G0 V: v- x. T[
: q. {% [/ J) o2 H2 k) Pif (item j( [credibility] of turtle (i + 1)) != -1)
' C" Z2 I7 Y: q5 e" T;;
判断是否给本turtle的评价质量做出过评价的节点
9 ~5 H/ y' ~7 t/ Z+ E- Q[set note (note + item j ([credibility]of turtle (i + 1)))
0 Y: y" U' s! k1 x: x, C! D( V2 n+ y;;*(exp (-(people - 2)))/(people - 2))]
9 z- y$ X& q' q# z$ c' Z% B
set k (k + 1)" Y  A) V' N+ l5 s% Q% E
]8 \6 c+ f/ c( c# z, ~
set j (j + 1)6 f" l, Q: k3 s1 g% _0 b
]" w6 S/ H  D5 Y, w2 [) n
set note (note *(exp (- (1 / k)))/ k)2 _) x, I+ e9 ]/ {8 E7 A7 x0 X, B
set credibility-list (replace-item i credibility-list note)1 w# s* B, n8 b/ \
set i (i + 1)
! |* L+ X9 G8 V]
- ^6 ^5 S8 c4 V7 pend# ]# D! C7 [* v  j* ]( [8 m

$ \$ K4 |' x, uto update-global-reputation-list
0 c) v/ ]8 _. d$ r( }5 tlet j 0& K8 c, c$ N4 @0 A& n! w
while[j < people]
$ @8 M- s2 B5 Y+ ^' l[
# D# k  A5 _8 l( X- Xlet new 0
: v- I0 Y# ~# A1 e. ?;;
暂存新的一个全局声誉: w" R' _- ~9 K7 Y" k- O
let i 0
. o* l' b' I( c; _let sum-money 0
# J1 f1 q0 {6 R: ~let credibility-money 0
' U9 V* D3 j6 o* s0 B. Fwhile [i < people]
! ^  x4 W% k! z# Z9 ~& `" g3 Q) G[
5 {) H$ f  j" c6 U" kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( f4 k7 \/ N) R7 _( V5 L; Sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 w$ P" S) ?- l/ o+ U$ }
set i (i + 1)* ~  r+ k8 D, ^& }
]
$ _" h, i1 b* E6 c/ Xlet k 0
6 u) a/ |/ D4 Wlet new1 01 e. [& J* H7 L- w# ~- W
while [k < people]
3 G- u- p: ^  ^, ]" l6 g[
* O- S( Y' g6 i* D' Y  G2 X1 i2 dset 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)
* o# P# ~* w1 T+ z; T3 w& Jset k (k + 1)
' _+ _. z, }4 {! C]. K: n& a1 P1 J# q/ D- T& x
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 L( n" o0 c# R
set global-reputation-list (replace-item j global-reputation-list new)
% h  M" S: K" ~5 fset j (j + 1)2 O  M/ r3 R3 @- C5 }$ Y. o
]2 |, `: t. H3 a( @9 c. K% h
end1 z. W! H% T) v  \3 Y

6 K' g6 K) ^  b, q* C* s/ U8 D; a8 w! q( W
# w" m2 O( n; i2 U
to get-color
2 d" j& o: Y" o9 t4 ?* s; i7 B: o# m+ q6 c8 w  q, Z( |' t2 i
set color blue
3 D- e, a4 j6 l- x# L& {9 d; F
end
  L1 I- x8 h. m  _4 J: I
; p$ ~1 M, o) T  \- E- q0 kto poll-class. x' ~" d6 q; O0 m
end' z7 c  v7 u. \2 F
7 t6 y! [' Z: D- l% L
to setup-plot1
7 y9 k) S# Q5 ]( X. N* \5 J- |8 R: }+ ~: \" R5 ~9 C9 U* k
set-current-plot "Trends-of-Local-reputation"

5 H, w/ g. x& J, q$ V
6 t) E) y$ ?3 e- ]  z1 b: F" N! D+ Lset-plot-x-range 0 xmax
; u4 e; C3 {5 N4 w

5 ^1 ]/ P! p: {3 V8 C$ t, \set-plot-y-range 0.0 ymax

/ g. t5 s3 k. M9 `end/ k# \- t" |/ z  O7 \4 t# i
: g+ D$ i$ i3 x4 A
to setup-plot24 d: U7 M) s: H( F
$ v$ g8 e% |7 [  q8 L9 P1 k/ b
set-current-plot "Trends-of-global-reputation"
* e6 z! V( R4 U2 U
" {1 B( e. p* @$ {  j& ^
set-plot-x-range 0 xmax
3 C% q9 g1 B  Q

9 f- ~5 ]$ l3 v# K7 G- p% t8 Gset-plot-y-range 0.0 ymax

$ X; }; }9 ?& {' wend
- s: Y5 o! \* j, P/ }0 e  r
% [$ e, `) `% x) v9 y1 Wto setup-plot3
2 U3 G4 \/ K7 a  u3 m0 T0 E5 g/ x* G2 |2 A
set-current-plot "Trends-of-credibility"
% y/ d' o! N3 w3 l+ _, u' M( Z
5 o* L5 {3 z6 m0 U, e
set-plot-x-range 0 xmax

5 [! _8 O, m% {) Q8 H3 W4 Y6 c% ?
; \  ]( X! M- P! e$ iset-plot-y-range 0.0 ymax
; a4 f; `' ]) N9 i5 P! E
end
' E7 N7 b  M2 E+ c/ c/ B1 g' I8 H4 T# ^4 q. [4 ^) n8 @
to do-plots
1 f7 ~1 z6 Q8 x* xset-current-plot "Trends-of-Local-reputation"
2 n. k; n+ F4 f8 U4 O0 S1 uset-current-plot-pen "Honest service"" L# m/ D1 y1 ?! n: R6 @0 w
end
3 d7 `( E9 n4 w/ m! f2 V
( ~4 r( x0 o' m[ 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.! c% e9 }* C4 ^/ @

2 P* G# P, _, s7 u( ?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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